本文实例讲述了C#多线程与跨线程访问界面控件的方法。分享给大家供大家参考。具体分析如下：
在编写WinForm访问WebService时，常会遇到因为网络延迟造成界面卡死的现象。启用新线程去访问WebService是一个可行的方法。
典型的，有下面的启动新线程示例：
代码如下:
private void LoadRemoteAppVersion()
{
if (FileName.Text.Trim() == “”) return;
StatusLabel.Text = “正在加载”;
S_Controllers_Bins.S_Controllers_BinsSoapClient service = new S_Controllers_Bins.S_Controllers_BinsSoapClient();
S_Controllers_Bins.Controllers_Bins m = service.QueryFileName(FileName.Text.Trim());
if (m != null)
{
//todo:
StatusLabel.Text = “加载成功”;
}else
StatusLabel.Text = “加载失败”;
}
private void BtnLoadBinInformation(object sender, EventArgs e)
{
Thread nonParameterThread = new Thread(new ThreadStart(LoadRemoteAppVersion));
nonParameterThread.Start();
}
{
if (FileName.Text.Trim() == “”) return;
StatusLabel.Text = “正在加载”;
S_Controllers_Bins.S_Controllers_BinsSoapClient service = new S_Controllers_Bins.S_Controllers_BinsSoapClient();
S_Controllers_Bins.Controllers_Bins m = service.QueryFileName(FileName.Text.Trim());
if (m != null)
{
//todo:
StatusLabel.Text = “加载成功”;
}else
StatusLabel.Text = “加载失败”;
}
private void BtnLoadBinInformation(object sender, EventArgs e)
{
Thread nonParameterThread = new Thread(new ThreadStart(LoadRemoteAppVersion));
nonParameterThread.Start();
}
运行程序的时候，如果要在线程里操作界面控件，可能会提示不能跨线程访问界面控件，有两种处理方法：
1.启动程序改一下：
代码如下:
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
2.使用委托
代码如下:
public delegate void LoadRemoteAppVersionDelegate(); //定义委托变量
private void BtnLoadBinInformation(object sender, EventArgs e)
{
LoadRemoteAppVersionDelegate func = new LoadRemoteAppVersionDelegate(LoadRemoteAppVersion);//<span style=”font-family: Arial, Helvetica, sans-serif;”>LoadRemoteAppVersion不用修改</span>
func.BeginInvoke(null, null);
}
private void BtnLoadBinInformation(object sender, EventArgs e)
{
LoadRemoteAppVersionDelegate func = new LoadRemoteAppVersionDelegate(LoadRemoteAppVersion);//<span style=”font-family: Arial, Helvetica, sans-serif;”>LoadRemoteAppVersion不用修改</span>
func.BeginInvoke(null, null);
}
希望本文所述对大家的C#程序设计有所帮助。
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C#多线程与跨线程访问界面控件的方法
本文地址: http://www.paobuke.com/develop/c-develop/pbk23124.html
C#多线程与跨线程访问界面控件的方法
本文地址: http://www.paobuke.com/develop/c-develop/pbk23124.html
