57d42ca9b3
------ #### ryUpdate V2.2.2101.2301 - *.[修复]修复对于指定用户更新,其它用户偶尔也能接收到更新的BUG。 #### ryControls V2.1.2101.2301 - *.[更新]ObjectListView持续汉化。 - *.[改进]ObjectListView点击单元格编辑时,编辑文本框布满整个单元格而不是布满文字区域。 - *.[改进]ObjectListView新增TopSpace属性,表示Title和Description之间的垂直间距。
731 lines
25 KiB
C#
731 lines
25 KiB
C#
//--------------------------日期:2014-2-22
|
||
//--------------------------版本:2.0.2.0
|
||
//--------------------------作者:itrycn
|
||
using System;
|
||
using System.Data;
|
||
using System.Data.SQLite;
|
||
//数据库操作类
|
||
namespace ryCommonDb
|
||
{
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
public class ClsDb
|
||
{
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
public ClsDb()
|
||
{
|
||
}
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
~ClsDb()
|
||
{
|
||
CloseDb();
|
||
}
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
/// <param name="DbFilePath">数据库路径</param>
|
||
/// <param name="PassWord">数据库密码</param>
|
||
/// <returns></returns>
|
||
public ClsDb(string DbFilePath, string PassWord)
|
||
{
|
||
DbPath = DbFilePath;
|
||
DbPassWord = PassWord;
|
||
}
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
/// <param name="DbFilePath">数据库路径</param>
|
||
/// <returns></returns>
|
||
public ClsDb(string DbFilePath)
|
||
{
|
||
DbPath = DbFilePath;
|
||
}
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
public SQLiteConnection SQLite_cn;
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
public string DbPath = "";
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
public string DbPassWord = "";
|
||
/// <summary>
|
||
/// 连接数据库
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public int ConnDb()
|
||
{
|
||
try
|
||
{
|
||
string folderPath = System.IO.Path.GetDirectoryName(DbPath);
|
||
if (!System.IO.Directory.Exists(folderPath))
|
||
{
|
||
System.IO.Directory.CreateDirectory(folderPath);
|
||
}
|
||
string connstr = string.Format("Data Source={0}", DbPath);
|
||
SQLite_cn = new SQLiteConnection(connstr);
|
||
SQLite_cn.SetPassword(DbPassWord);
|
||
SQLite_cn.Open();
|
||
return 1;
|
||
}
|
||
catch { return -1; }
|
||
}
|
||
/// <summary>
|
||
/// 设置路径和密码
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public int SetPathPwd(string Path, string PassWord)
|
||
{
|
||
DbPath = Path;
|
||
DbPassWord = PassWord;
|
||
return 1;
|
||
}
|
||
/// <summary>
|
||
/// 连接数据库
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public int ConnDb(string Path, string PassWord)
|
||
{
|
||
try
|
||
{
|
||
DbPath = Path;
|
||
string folderPath = System.IO.Path.GetDirectoryName(DbPath);
|
||
if (!System.IO.Directory.Exists(folderPath))
|
||
{
|
||
System.IO.Directory.CreateDirectory(folderPath);
|
||
}
|
||
DbPassWord = PassWord;
|
||
string connstr = string.Format("Data Source={0}", DbPath);
|
||
SQLite_cn = new SQLiteConnection(connstr);
|
||
SQLite_cn.SetPassword(DbPassWord);
|
||
SQLite_cn.Open();
|
||
DataTable schemaTable = SQLite_cn.GetSchema("TABLES");
|
||
return SQLite_cn.State==ConnectionState.Open?1:0;
|
||
}
|
||
catch { return -1; }
|
||
}
|
||
/// <summary>
|
||
///
|
||
/// </summary>
|
||
/// <param name="newPwd"></param>
|
||
public void ChangePwd(string newPwd)
|
||
{
|
||
SQLite_cn.ChangePassword(newPwd);
|
||
}
|
||
/// <summary>
|
||
/// 连接或创建数据库，如果数据库不存在，就创建，否则连接
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public int ConnOrCreateDb()
|
||
{
|
||
try
|
||
{
|
||
string folderPath = System.IO.Path.GetDirectoryName(DbPath);
|
||
if (System.IO.File.Exists(DbPath) == false)
|
||
{
|
||
if (System.IO.Directory.Exists(folderPath) == false)
|
||
{
|
||
System.IO.Directory.CreateDirectory(folderPath);
|
||
}
|
||
if (System.IO.Directory.Exists(folderPath) == false)
|
||
{
|
||
return -1;
|
||
}
|
||
else
|
||
{
|
||
CreateDbByExample();
|
||
return 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ConnDb();
|
||
return 1;
|
||
}
|
||
}
|
||
catch { return -2; }
|
||
}
|
||
/// <summary>
|
||
/// 连接或创建数据库，如果数据库不存在，就创建，否则连接
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public int ConnOrCreateDb(string Path,string PassWord)
|
||
{
|
||
try
|
||
{
|
||
DbPath = Path;
|
||
DbPassWord = PassWord;
|
||
string folderPath = System.IO.Path.GetDirectoryName(DbPath);
|
||
if (System.IO.File.Exists(DbPath) == false)
|
||
{
|
||
if (System.IO.Directory.Exists(folderPath) == false)
|
||
{
|
||
System.IO.Directory.CreateDirectory(folderPath);
|
||
}
|
||
if (System.IO.Directory.Exists(folderPath) == false)
|
||
{
|
||
return -1;
|
||
}
|
||
else
|
||
{
|
||
CreateDbByExample();
|
||
return 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ConnDb();
|
||
return 1;
|
||
}
|
||
}
|
||
catch { return -2; }
|
||
}
|
||
/// <summary>
|
||
/// 关闭数据库
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public void CloseDb()
|
||
{
|
||
try
|
||
{
|
||
if (SQLite_cn!=null && SQLite_cn.State != ConnectionState.Closed)
|
||
{
|
||
SQLite_cn.Close();
|
||
}
|
||
}
|
||
catch { }
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <param name="commandParameters">SQL命令参数</param>
|
||
/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
|
||
public int ExecuteNonQuery(string SQLText, SQLiteParameter[] commandParameters)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
if (commandParameters.Length > 0)
|
||
{
|
||
foreach (SQLiteParameter parm in commandParameters)
|
||
{ cm.Parameters.Add(parm); }
|
||
}
|
||
cm.Connection = SQLite_cn;
|
||
int i=cm.ExecuteNonQuery();
|
||
cm.Dispose();
|
||
return i;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
|
||
public int ExecuteNonQuery(string SQLText)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
cm.Connection = SQLite_cn;
|
||
int i = cm.ExecuteNonQuery();
|
||
cm.Dispose();
|
||
return i;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令,并返回结果
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <param name="commandParameters">SQL命令参数</param>
|
||
/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
|
||
public string[] ExecuteSQL(string SQLText, SQLiteParameter[] commandParameters)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
if (commandParameters.Length > 0)
|
||
{
|
||
cm.Parameters.AddRange(commandParameters);
|
||
}
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
string[] resultStr=null;
|
||
while (reader.Read())
|
||
{
|
||
resultStr = new string[reader.FieldCount];
|
||
for (int i = 0; i < reader.FieldCount; i++)
|
||
{
|
||
resultStr[i] = reader[i].ToString();
|
||
}
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return resultStr;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return null;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令,并返回结果
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <param name="commandParameters">SQL命令参数</param>
|
||
/// <param name="DefFristValue">数组第一个默认的值</param>
|
||
/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
|
||
public string[] ExecuteSQL(string SQLText, SQLiteParameter[] commandParameters, string DefFristValue)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
if (commandParameters.Length > 0)
|
||
{
|
||
cm.Parameters.AddRange(commandParameters);
|
||
}
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
string[] resultStr = null;
|
||
while (reader.Read())
|
||
{
|
||
resultStr = new string[reader.FieldCount];
|
||
for (int i = 0; i < reader.FieldCount; i++)
|
||
{
|
||
resultStr[i] = reader[i].ToString();
|
||
}
|
||
break;
|
||
}
|
||
if (resultStr == null)
|
||
{
|
||
resultStr = new string[1];
|
||
resultStr[0] = DefFristValue;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return resultStr;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
string[] resultStr = null;
|
||
resultStr = new string[1];
|
||
resultStr[0] = DefFristValue;
|
||
return resultStr;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令,并返回结果
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <returns>运行失败，则返回null，否则返回以数组显示的字符串</returns>
|
||
public string[] ExecuteSQL(string SQLText)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
string[] resultStr = null;
|
||
while (reader.Read())
|
||
{
|
||
resultStr = new string[reader.FieldCount];
|
||
for (int i = 0; i < reader.FieldCount; i++)
|
||
{
|
||
resultStr[i] = reader[i].ToString();
|
||
}
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return resultStr;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return null;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 运行SQL命令,并返回结果
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <param name="DefFristValue">数组第一个默认的值</param>
|
||
/// <returns>运行失败，则返回DefFristValue，否则返回以数组显示的字符串</returns>
|
||
public string[] ExecuteSQL(string SQLText,string DefFristValue)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
string[] resultStr = null;
|
||
while (reader.Read())
|
||
{
|
||
resultStr = new string[reader.FieldCount];
|
||
for (int i = 0; i < reader.FieldCount; i++)
|
||
{
|
||
resultStr[i] = reader[i].ToString();
|
||
}
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
if (resultStr == null)
|
||
{
|
||
resultStr = new string[1];
|
||
resultStr[0] = DefFristValue;
|
||
}
|
||
return resultStr;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
string[] resultStr = null;
|
||
resultStr = new string[1];
|
||
resultStr[0] = DefFristValue;
|
||
return resultStr;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 清空指定表的所有数据
|
||
/// </summary>
|
||
/// <param name="TableName">表名</param>
|
||
/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
|
||
[Obsolete("不建议使用，请使用ClearTableData属性", false)]
|
||
public int DeleteTable(string TableName)
|
||
{
|
||
return ClearTableData(TableName);
|
||
}
|
||
/// <summary>
|
||
/// 清空指定表的所有数据
|
||
/// </summary>
|
||
/// <param name="TableName">表名</param>
|
||
/// <returns>运行失败，则返回-1，否则返回影响的行数</returns>
|
||
public int ClearTableData(string TableName)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = "delete from " + TableName;
|
||
cm.Connection = SQLite_cn;
|
||
int i = cm.ExecuteNonQuery();
|
||
cm.Dispose();
|
||
return i;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 判断指定值是否存在
|
||
/// </summary>
|
||
/// <param name="TableName">表名</param>
|
||
/// <param name="valueField">指定值所属字段</param>
|
||
/// <param name="value">指定值</param>
|
||
/// <param name="curId">当前id，如果是新增记录，请填写-1</param>
|
||
/// <returns></returns>
|
||
public bool IsExistValue(string TableName,string valueField,string value,int curId)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = "select * from " + TableName + " where " + valueField + "=@tvalue";
|
||
cm.Parameters.Add("@tvalue", DbType.String);
|
||
cm.Parameters["@tvalue"].Value = value;
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
bool result = false;
|
||
while (reader.Read())
|
||
{
|
||
if (curId < 0)
|
||
{
|
||
result = true;
|
||
}
|
||
else
|
||
{
|
||
if (reader["id"].ToString() == curId.ToString())
|
||
{
|
||
result = false;
|
||
}
|
||
else
|
||
{
|
||
result=true;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return result;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return false;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 判断SQL语句是否有结果返回
|
||
/// </summary>
|
||
/// <param name="SQLText">SQL语句</param>
|
||
/// <param name="commandParameters">SQL命令参数</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, SQLiteParameter[] commandParameters)
|
||
{
|
||
try
|
||
{
|
||
#region 数据库
|
||
{
|
||
SQLiteCommand cm = SQLite_cn.CreateCommand();
|
||
cm.Parameters.Clear();
|
||
cm.CommandText = SQLText;
|
||
if (commandParameters.Length > 0)
|
||
{
|
||
cm.Parameters.AddRange(commandParameters);
|
||
//foreach (SQLiteParameter parm in commandParameters)
|
||
//{ cm.Parameters.Add(parm); }
|
||
}
|
||
SQLiteDataReader reader = cm.ExecuteReader();
|
||
int i = 0;
|
||
while (reader.Read())
|
||
{
|
||
i = 1;
|
||
break;
|
||
}
|
||
reader.Close();
|
||
cm.Dispose();
|
||
return i;
|
||
}
|
||
#endregion
|
||
}
|
||
catch
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 判断SQL语句是否有结果返回
|
||
/// </summary>
|
||
/// <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,"");
|
||
}
|
||
}
|
||
}
|