跨线程问题 [英] Cross Thread problem

问题描述

我得到了这段代码(lg_log是一个列表框，我希望它记录start_server.bat)，这是我得到的代码:

I got this code (lg_log is a listbox, and i want it to log the start_server.bat) Here is the code i got:

public void bt_play_Click(object sender, EventArgs e)
{
    lg_log.Items.Add("Starting Mineme server ..");

    string directory = Directory.GetCurrentDirectory();


    var info = new ProcessStartInfo(directory + @"\start_base.bat") {UseShellExecute = false, RedirectStandardOutput = true, CreateNoWindow = true, WorkingDirectory = directory + @"\Servers\Base"};
    var proc = new Process { StartInfo = info, EnableRaisingEvents = true };

    proc.OutputDataReceived += (obj, args) =>
    {
        if (args.Data != null)
        {
            lg_log.Items.Add(args.Data);
        }
    };
    proc.Start();
    proc.BeginOutputReadLine();

    lg_log.Items.Add("Server is now running!");
    proc.WaitForExit();
}

运行此命令时，我会得到一个错误..

When i run this, I'll get an error ..

我得到的错误是这样:System.InvalidOperationException希望它会有所帮助:)

The error i get is this: System.InvalidOperationException Hope it helps :)

错误来自lg_log.Items.Add(args.Data);代码行

The error comes at the lg_log.Items.Add(args.Data); code line

推荐答案

替换

if (args.Data != null)
{
    lg_log.Items.Add(args.Data);
}

使用

if (args.Data != null)
{
    if (lg_log.InvokeRequired)
        lg_log.Invoke(new Action(() => lg_log.Items.Add(args.Data)));
    else
        lg_log.Items.Add(args.Data);
}

这篇关于跨线程问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！