与外部程序输出刷新表单控件 [英] Refresh form controls with external program output

问题描述

我有一个基本的WinForm的，调用外部程序（SVN）。我想显示由SVN在形式的文本输出的结果。

I have a basic winform, calling an external program (SVN). I want to display the output produced by SVN in a textbox in the form.

下面是我的code调用这个外部程序：

Here is my code for calling this external program :

private void SVNcmd(string args, string workingcopy)
{
    textBoxOutput.Text += workingcopy + Environment.NewLine
        + args + Environment.NewLine;
    Process p = new Process();
    p.StartInfo.WorkingDirectory = workingcopy;
    p.StartInfo.FileName = "svn";
    p.StartInfo.Arguments = args;
    p.StartInfo.CreateNoWindow = true;
    p.StartInfo.RedirectStandardOutput = true;
    p.StartInfo.UseShellExecute = false;
    p.Start();
    textBoxOutput.Text += p.StandardOutput.ReadToEnd() + Environment.NewLine;
    p.WaitForExit(); 
}

这就是所谓的内部的foreach。问题是，当我启动命令，我必须等待，直到每一个命令已经完成......这可能需要相当长的时间。在此期间，形式冻结，并没有显示在文本框中。
也许这种方法的命令的同时启动，尽管WaitForExit？我不知道，我不熟悉这种类型的问题（我是一个Web开发人员的）。

It's called inside a "foreach". The problem is, when I launch the command, I have to wait until each and every command has been finished... and it can take quite a while. During this time, the form freezes, and nothing is displayed in the textbox.
Maybe with this method the commands are launched at the same time, despite the WaitForExit ? I'm not sure, I'm not familiar with this type of problems (I'm more of a web developer).

我能做些什么，以显示SVN输出和冻结停止形式在程序运行时？

What can I do to display the SVN output and stop the form from freezing while the program runs ?

感谢

推荐答案

使用一个BackgroundWorker来做到这一点。在backgroundworder可以报告进展并输出到用户界面。

Use a backgroundworker to do this. In the backgroundworder you can report progress and output to the UI.

很好的例子在 MSDN

让你的工人DoWork的做你的code。当你得到读的线条，你应该做的worker.ReportProgress。注册该事件，并从参数（事件）就行了。

Let you worker DoWork do your code. Where you get read the lines you should do worker.ReportProgress. Register on that event and get the line from the param (the event).

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