a3f978b187
------ #### Itrycn_Project2 V1.0.2106.1201 - *.[新增]新增加入皮肤功能。 - *.[新增]对话框全部使用皮肤。 - *.[新增]新增加入扫描模板,快速开发扫描功能。 - *.[改进]公共变量进行区分设置,更加规范。
730 lines
26 KiB
C#
730 lines
26 KiB
C#
//--------------------------日期:2014-2-22
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//--------------------------版本:2.0.2.0
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//--------------------------作者:itrycn
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using System;
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using System.Data;
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using System.Data.SQLite;
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//数据库操作类
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namespace ryCommonDb
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{
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/// <summary>
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///
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/// </summary>
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public class ClsDb
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{
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/// <summary>
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///
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/// </summary>
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public ClsDb()
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{
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}
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/// <summary>
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///
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/// </summary>
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~ClsDb()
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{
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CloseDb();
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="DbFilePath">数据库路径</param>
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/// <param name="PassWord">数据库密码</param>
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/// <returns></returns>
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public ClsDb(string DbFilePath, string PassWord)
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{
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DbPath = DbFilePath;
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DbPassWord = PassWord;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="DbFilePath">数据库路径</param>
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/// <returns></returns>
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public ClsDb(string DbFilePath)
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{
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DbPath = DbFilePath;
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}
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/// <summary>
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///
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/// </summary>
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public SQLiteConnection SQLite_cn;
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/// <summary>
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///
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/// </summary>
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public string DbPath = "";
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/// <summary>
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///
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/// </summary>
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public string DbPassWord = "";
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/// <summary>
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/// 连接数据库
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/// </summary>
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/// <returns></returns>
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public int ConnDb()
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{
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try
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{
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string folderPath = System.IO.Path.GetDirectoryName(DbPath);
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if (!System.IO.Directory.Exists(folderPath))
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{
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System.IO.Directory.CreateDirectory(folderPath);
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}
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string connstr = string.Format("Data Source={0}", DbPath);
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SQLite_cn = new SQLiteConnection(connstr);
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SQLite_cn.SetPassword(DbPassWord);
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SQLite_cn.Open();
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return 1;
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}
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catch { return -1; }
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}
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/// <summary>
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/// 设置路径和密码
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/// </summary>
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/// <returns></returns>
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public int SetPathPwd(string Path, string PassWord)
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{
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DbPath = Path;
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DbPassWord = PassWord;
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return 1;
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}
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/// <summary>
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/// 连接数据库
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/// </summary>
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/// <returns></returns>
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public int ConnDb(string Path, string PassWord)
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{
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try
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{
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DbPath = Path;
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string folderPath = System.IO.Path.GetDirectoryName(DbPath);
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if (!System.IO.Directory.Exists(folderPath))
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{
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System.IO.Directory.CreateDirectory(folderPath);
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}
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DbPassWord = PassWord;
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string connstr = string.Format("Data Source={0}", DbPath);
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SQLite_cn = new SQLiteConnection(connstr);
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SQLite_cn.SetPassword(DbPassWord);
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SQLite_cn.Open();
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DataTable schemaTable = SQLite_cn.GetSchema("TABLES");
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return SQLite_cn.State==ConnectionState.Open?1:0;
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}
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catch(Exception)
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{ return -1; }
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="newPwd"></param>
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public void ChangePwd(string newPwd)
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{
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SQLite_cn.ChangePassword(newPwd);
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}
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/// <summary>
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/// 连接或创建数据库，如果数据库不存在，就创建，否则连接
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/// </summary>
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/// <returns></returns>
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public int ConnOrCreateDb()
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{
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try
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{
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string folderPath = System.IO.Path.GetDirectoryName(DbPath);
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if (System.IO.File.Exists(DbPath) == false)
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{
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if (System.IO.Directory.Exists(folderPath) == false)
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{
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System.IO.Directory.CreateDirectory(folderPath);
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}
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if (System.IO.Directory.Exists(folderPath) == false)
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{
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return -1;
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}
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else
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{
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CreateDbByExample();
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return 1;
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}
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}
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else
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{
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ConnDb();
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return 1;
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}
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}
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catch { return -2; }
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}
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/// <summary>
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/// 连接或创建数据库，如果数据库不存在，就创建，否则连接
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/// </summary>
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/// <returns></returns>
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public int ConnOrCreateDb(string Path,string PassWord)
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{
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try
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{
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DbPath = Path;
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DbPassWord = PassWord;
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string folderPath = System.IO.Path.GetDirectoryName(DbPath);
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if (System.IO.File.Exists(DbPath) == false)
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{
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if (System.IO.Directory.Exists(folderPath) == false)
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{
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System.IO.Directory.CreateDirectory(folderPath);
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}
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if (System.IO.Directory.Exists(folderPath) == false)
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{
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return -1;
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}
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else
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{
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CreateDbByExample();
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return 1;
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}
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}
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else
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{
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ConnDb();
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return 1;
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}
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}
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catch { return -2; }
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}
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/// <summary>
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/// 关闭数据库
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/// </summary>
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/// <returns></returns>
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public void CloseDb()
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{
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try
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{
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if (SQLite_cn!=null && SQLite_cn.State != ConnectionState.Closed)
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{
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SQLite_cn.Close();
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}
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}
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catch { }
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}
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/// <summary>
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/// 运行SQL命令
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <param name="commandParameters">SQL命令参数</param>
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/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
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public int ExecuteNonQuery(string SQLText, SQLiteParameter[] commandParameters)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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if (commandParameters.Length > 0)
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{
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foreach (SQLiteParameter parm in commandParameters)
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{ cm.Parameters.Add(parm); }
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}
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cm.Connection = SQLite_cn;
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int i=cm.ExecuteNonQuery();
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cm.Dispose();
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return i;
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}
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#endregion
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}
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catch
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{
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return -1;
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}
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}
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/// <summary>
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/// 运行SQL命令
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
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public int ExecuteNonQuery(string SQLText)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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cm.Connection = SQLite_cn;
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int i = cm.ExecuteNonQuery();
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cm.Dispose();
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return i;
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}
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#endregion
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}
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catch
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{
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return -1;
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}
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}
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/// <summary>
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/// 运行SQL命令,并返回结果
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <param name="commandParameters">SQL命令参数</param>
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/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
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public string[] ExecuteSQL(string SQLText, SQLiteParameter[] commandParameters)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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if (commandParameters.Length > 0)
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{
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cm.Parameters.AddRange(commandParameters);
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}
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SQLiteDataReader reader = cm.ExecuteReader();
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string[] resultStr=null;
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while (reader.Read())
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{
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resultStr = new string[reader.FieldCount];
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for (int i = 0; i < reader.FieldCount; i++)
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{
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resultStr[i] = reader[i].ToString();
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}
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break;
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}
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reader.Close();
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cm.Dispose();
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return resultStr;
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}
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#endregion
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 运行SQL命令,并返回结果
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <param name="commandParameters">SQL命令参数</param>
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/// <param name="DefFristValue">数组第一个默认的值</param>
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/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
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public string[] ExecuteSQL(string SQLText, SQLiteParameter[] commandParameters, string DefFristValue)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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if (commandParameters.Length > 0)
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{
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cm.Parameters.AddRange(commandParameters);
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}
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SQLiteDataReader reader = cm.ExecuteReader();
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string[] resultStr = null;
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while (reader.Read())
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{
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resultStr = new string[reader.FieldCount];
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for (int i = 0; i < reader.FieldCount; i++)
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{
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resultStr[i] = reader[i].ToString();
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}
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break;
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}
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if (resultStr == null)
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{
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resultStr = new string[1];
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resultStr[0] = DefFristValue;
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}
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reader.Close();
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cm.Dispose();
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return resultStr;
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}
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#endregion
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}
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catch
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{
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string[] resultStr = new string[1];
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resultStr[0] = DefFristValue;
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return resultStr;
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}
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}
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/// <summary>
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/// 运行SQL命令,并返回结果
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
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public string[] ExecuteSQL(string SQLText)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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SQLiteDataReader reader = cm.ExecuteReader();
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string[] resultStr = null;
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while (reader.Read())
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{
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resultStr = new string[reader.FieldCount];
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for (int i = 0; i < reader.FieldCount; i++)
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{
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resultStr[i] = reader[i].ToString();
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}
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break;
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}
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reader.Close();
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cm.Dispose();
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return resultStr;
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}
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#endregion
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 运行SQL命令,并返回结果
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <param name="DefFristValue">数组第一个默认的值</param>
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/// <returns>运行失败，则返回DefFristValue，否则返回以数组显示的字符串</returns>
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public string[] ExecuteSQL(string SQLText,string DefFristValue)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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SQLiteDataReader reader = cm.ExecuteReader();
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string[] resultStr = null;
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while (reader.Read())
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{
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resultStr = new string[reader.FieldCount];
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for (int i = 0; i < reader.FieldCount; i++)
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{
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resultStr[i] = reader[i].ToString();
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}
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break;
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}
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reader.Close();
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cm.Dispose();
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if (resultStr == null)
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{
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resultStr = new string[1];
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resultStr[0] = DefFristValue;
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}
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return resultStr;
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}
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#endregion
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}
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catch
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{
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string[] resultStr = new string[1];
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resultStr[0] = DefFristValue;
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return resultStr;
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}
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}
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/// <summary>
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/// 清空指定表的所有数据
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/// </summary>
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/// <param name="TableName">表名</param>
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/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
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[Obsolete("不建议使用，请使用ClearTableData属性", false)]
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public int DeleteTable(string TableName)
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{
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return ClearTableData(TableName);
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}
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/// <summary>
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/// 清空指定表的所有数据
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/// </summary>
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/// <param name="TableName">表名</param>
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/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
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public int ClearTableData(string TableName)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = "delete from " + TableName;
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cm.Connection = SQLite_cn;
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int i = cm.ExecuteNonQuery();
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cm.Dispose();
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return i;
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}
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#endregion
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}
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catch
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{
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return -1;
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}
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}
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/// <summary>
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/// 判断指定值是否存在
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/// </summary>
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/// <param name="TableName">表名</param>
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/// <param name="valueField">指定值所属字段</param>
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/// <param name="value">指定值</param>
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/// <param name="curId">当前id，如果是新增记录，请填写-1</param>
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/// <returns></returns>
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public bool IsExistValue(string TableName,string valueField,string value,int curId)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = "select * from " + TableName + " where " + valueField + "=@tvalue";
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cm.Parameters.Add("@tvalue", DbType.String);
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cm.Parameters["@tvalue"].Value = value;
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SQLiteDataReader reader = cm.ExecuteReader();
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bool result = false;
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while (reader.Read())
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{
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if (curId < 0)
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{
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result = true;
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}
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else
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{
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if (reader["id"].ToString() == curId.ToString())
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{
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result = false;
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}
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else
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{
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result=true;
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}
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}
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break;
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}
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reader.Close();
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cm.Dispose();
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return result;
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}
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#endregion
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}
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catch
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{
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return false;
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}
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}
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/// <summary>
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/// 判断SQL语句是否有结果返回
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
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/// <param name="commandParameters">SQL命令参数</param>
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/// <returns>运行失败，则返回-1；存在结果，返回1；不存在结果，返回0</returns>
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public int ExecuteReadResult(string SQLText, SQLiteParameter[] commandParameters)
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{
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try
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{
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#region 数据库
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{
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SQLiteCommand cm = SQLite_cn.CreateCommand();
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cm.Parameters.Clear();
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cm.CommandText = SQLText;
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if (commandParameters.Length > 0)
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{
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cm.Parameters.AddRange(commandParameters);
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//foreach (SQLiteParameter parm in commandParameters)
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//{ cm.Parameters.Add(parm); }
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}
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SQLiteDataReader reader = cm.ExecuteReader();
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int i = 0;
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while (reader.Read())
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{
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i = 1;
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break;
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}
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reader.Close();
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cm.Dispose();
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return i;
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}
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#endregion
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}
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catch
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{
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return -1;
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}
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}
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/// <summary>
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/// 判断SQL语句是否有结果返回
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/// </summary>
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/// <param name="SQLText">SQL语句</param>
|
||
/// <returns>运行失败，则返回-1；存在结果，返回1；不存在结果，返回0</returns>
|
||
public int ExecuteReadResult(string SQLText)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
int i = 0;
|
||
while (reader.Read())
|
||
{
|
||
i = 1;
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return i;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 创建数据库
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <returns></returns>
|
||
public void CreateDb(string SQLText)
|
||
{
|
||
if (SQLite_cn == null)
|
||
{
|
||
ConnDb();
|
||
}
|
||
if (SQLite_cn.State != ConnectionState.Open) //如果数据库未打开，则先打开数据库
|
||
{
|
||
ConnDb();
|
||
}
|
||
SQLiteCommand cmd = SQLite_cn.CreateCommand();
|
||
cmd.CommandText = SQLText;
|
||
cmd.ExecuteNonQuery();
|
||
cmd.Dispose();
|
||
}
|
||
/// <summary>
|
||
/// 根据内置例子创建数据库
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public void CreateDbByExample()
|
||
{
|
||
if (SQLite_cn == null)
|
||
{
|
||
ConnDb();
|
||
}
|
||
if (SQLite_cn.State != ConnectionState.Open) //如果数据库未打开，则先打开数据库
|
||
{
|
||
ConnDb();
|
||
}
|
||
SQLiteCommand cmd = SQLite_cn.CreateCommand();
|
||
string tmpStr = "([ID] INTEGER PRIMARY KEY,[Name] TEXT COLLATE NOCASE,[sValue1] TEXT COLLATE NOCASE,[sValue2] TEXT COLLATE NOCASE,[TD1] TEXT COLLATE NOCASE, [TD2] TEXT COLLATE NOCASE, [TD3] TEXT COLLATE NOCASE, [TD4] TEXT COLLATE NOCASE, [TD5] TEXT COLLATE NOCASE, [IntData1] INTEGER DEFAULT 0, [IntData2] INTEGER DEFAULT 0, [IntData3] INTEGER DEFAULT 0, [floatData1] FLOAT DEFAULT 0, [floatData2] FLOAT DEFAULT 0, [floatData3] FLOAT DEFAULT 0, [floatData4] FLOAT DEFAULT 0, [floatData5] FLOAT, [date1] DATETIME, [date2] DATETIME, [date3] DATETIME, [date4] DATETIME, [date5] DATETIME);";
|
||
for (int i = 1; i < 16; i++)
|
||
{
|
||
cmd.CommandText = "CREATE TABLE MainTable"+i.ToString()+" " + tmpStr;
|
||
cmd.ExecuteNonQuery();
|
||
}
|
||
cmd.Dispose();
|
||
}
|
||
/// <summary>
|
||
/// 保存信息，如果Name不存在，系统会自动创建
|
||
/// </summary>
|
||
/// <returns>返回1，表示成功，0表示失败</returns>
|
||
public int SetSysNameValue(string Name, string Value, string TableName)
|
||
{
|
||
try
|
||
{
|
||
#region 添加记录到数据库
|
||
//try
|
||
{
|
||
int haveRecord = 0;
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = "update [" + TableName + "] set sValue1=@sValue1,date2=@date2 where Name=@Name";
|
||
cm.Parameters.Add("@Name", DbType.String);
|
||
cm.Parameters["@Name"].Value = Name;
|
||
cm.Parameters.Add("@sValue1", DbType.String);
|
||
cm.Parameters["@sValue1"].Value = Value;
|
||
cm.Parameters.Add("@date2", DbType.DateTime);
|
||
cm.Parameters["@date2"].Value = DateTime.Now;
|
||
cm.Connection = SQLite_cn;
|
||
haveRecord=cm.ExecuteNonQuery();
|
||
cm.Parameters.Clear();
|
||
if (haveRecord == 0)
|
||
{
|
||
cm.CommandText = "insert into [" + TableName + "] ([Name],[sValue1],[date1],[date2]) values(@Name,@sValue1,@date1,@date1)";
|
||
cm.Parameters.Add("@Name", DbType.String);
|
||
cm.Parameters["@Name"].Value = Name;
|
||
cm.Parameters.Add("@sValue1", DbType.String);
|
||
cm.Parameters["@sValue1"].Value = Value;
|
||
cm.Parameters.Add("@date1", DbType.DateTime);
|
||
cm.Parameters["@date1"].Value = DateTime.Now;
|
||
cm.Connection = SQLite_cn;
|
||
cm.ExecuteNonQuery();
|
||
cm.Dispose();
|
||
}
|
||
}
|
||
//catch { }
|
||
#endregion
|
||
return 1;
|
||
}
|
||
catch
|
||
{
|
||
return 0;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 获取信息
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public string GetValueByName(string Name,string TableName,string defValue)
|
||
{
|
||
try
|
||
{
|
||
#region 从数据库获取记录
|
||
//try
|
||
{
|
||
string haveRecord = defValue;
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = "select * from " + TableName + " where Name=@Name";
|
||
cm.Parameters.Add("@Name", DbType.String);
|
||
cm.Parameters["@Name"].Value = Name;
|
||
cm.Connection = SQLite_cn;
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
while (reader.Read())
|
||
{
|
||
haveRecord = reader["sValue1"].ToString();
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return haveRecord;
|
||
}
|
||
//catch { }
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return defValue;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 获取信息
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public string GetValueByName(string Name, string TableName)
|
||
{
|
||
return GetValueByName(Name, TableName,"");
|
||
}
|
||
}
|
||
}
|