118 lines
3.7 KiB
C#
118 lines
3.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Text;
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using System.Windows.Forms;
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using System.Net;
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using System.IO;
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using System.Threading;
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namespace ryControls
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{
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/// <summary>
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/// 超级图片控件,支持加载工程内部图片、异步加载网络图片
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/// </summary>
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public partial class SuperPictureBox : PictureBox
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{
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/// <summary>
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/// 超级图片控件,支持加载工程内部图片、异步加载网络图片
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/// </summary>
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public SuperPictureBox()
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{
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InitializeComponent();
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}
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/// <summary>
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/// 图片所在上级域名
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/// </summary>
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[Description("图片所在上级域名")]
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public string ImageDomain { get; set; }
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/// <summary>
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/// 图片资源所在上级文件夹
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/// </summary>
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[Description("图片资源所在上级文件夹")]
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public string ImageResFolder { get; set; }
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/// <summary>
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/// 根据不同前缀，加载不同格式图片。i:表示工程内置图片;s:表示T_ImageDomain域名下的图片,u:表示指定url的图片;f:表示本地图片
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/// </summary>
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/// <param name="sUrl"></param>
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public void LoadPicBySUrl(string sUrl)
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{
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string HeadStr = sUrl;
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if (HeadStr.Length > 2)
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{
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string keyStr = HeadStr.Substring(0, 2);
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if (keyStr == "i:")//内置
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{
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this.Image = ButtonImages.ImageObject.GetResBitmap(Application.ExecutablePath, ImageResFolder + HeadStr.Substring(2));
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}
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else if (keyStr == "s:") //服务器上的地址
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{
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LoadFromUrl(ImageDomain + HeadStr.Substring(2), true);
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}
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else if (keyStr == "u:") //URL地址
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{
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LoadFromUrl(HeadStr.Substring(2), true);
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}
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else if (keyStr == "f:") //本地图片
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{
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LoadFromFile(HeadStr.Substring(2));
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}
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}
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}
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private void LoadPic(string url)
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{
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Image image=null;
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try
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{
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WebRequest webreq = WebRequest.Create(url);
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WebResponse webres = webreq.GetResponse();
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Stream stream = webres.GetResponseStream();
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image = Image.FromStream(stream);
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stream.Close();
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}
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catch { }
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try
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{
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DateTime dt = DateTime.Now.AddSeconds(5);
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while(!this.IsHandleCreated)
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{
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Thread.Sleep(10);
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if (dt < DateTime.Now) { break; }
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}
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this.Invoke(new Action(() =>
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{
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this.Image = image;
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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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/// 加载本地图片,加载完毕不会占用本地图片
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/// </summary>
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/// <param name="path"></param>
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public void LoadFromFile(string path)
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{
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this.Image = ryCommon.RyFiles.LoadPicFromFile(path);
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}
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/// <summary>
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/// 加载指定url图片
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/// </summary>
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/// <param name="url">url位置</param>
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/// <param name="isAsyn">是否异步</param>
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public void LoadFromUrl(string url, bool isAsyn)
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{
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if (isAsyn)
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{
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void starter() { LoadPic(url); }
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new Thread(starter).Start();
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}
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else
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{
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LoadPic(url);
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}
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}
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}
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}
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