这是我的主要C#代码：

public partial class frmMain : Form
{
    private Process myProcess = null;
    public frmMain()
    {
        InitializeComponent();            
    }

    public delegate void UpdateUIDelegate(string data);
    private void btnRun_Click(object sender,EventArgs e)
    {
        myProcess = new Process();
        ProcessStartInfo myProcessStartInfo = new ProcessStartInfo("perl.exe");
        myProcessStartInfo.Arguments = "test.pl";
        myProcessStartInfo.UseShellExecute = false;
        myProcessStartInfo.RedirectStandardOutput = true;
        myProcessStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
        myProcessStartInfo.CreateNoWindow = true;
        myProcess.StartInfo = myProcessStartInfo;
        myProcess.OutputDataReceived += new DataReceivedEventHandler(myProcess_OutputDataReceived);
        myProcess.Start();
        myProcess.BeginOutputReadLine(); 
    }

    void myProcess_OutputDataReceived(object sender,DataReceivedEventArgs e)
    {
        if (txtOutput.Invokerequired)
        {
            UpdateUIDelegate updateDelegate = new UpdateUIDelegate(UpdateUI);                
            this.Invoke(updateDelegate,e.Data);
        }            
    }

    void UpdateUI(string data)
    {
        txtOutput.Text += data + "\r\n";
    }
}

和test.pl的代码：

my @a = qw{1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19};
my @b = qw{a b c d e f g h i j  k  l  m  n  o  p  q  r  s };
print 'start' . "\n";
while ( my ( $item1,$item2) = ( splice (@a,1),splice (@b,1) ) ) {
    print 'Item 1: ' . $item1 . "\n";
    print 'Item 2: ' . $item2 . "\n";
    warn 'Finish one item' . "\n";
    sleep(1);
}

我有一个问题是输出数据只显示在文本框上,直到Perl完成.

当我发现它时,更有趣的是,如果我对控制台应用程序(C#)做同样的事情,一切似乎都没问题.

这是控制台应用程序的代码：

class Program
{
    static void Main(string[] args)
    {
        Process myProcess = new Process();
        ProcessStartInfo myProcessStartInfo = new ProcessStartInfo("perl.exe");
        myProcessStartInfo.Arguments = "test.pl";
        myProcessStartInfo.UseShellExecute = false;
        myProcessStartInfo.RedirectStandardOutput = true;
        myProcess.StartInfo = myProcessStartInfo;

        myProcess.OutputDataReceived += new DataReceivedEventHandler(myProcess_OutputDataReceived);                                    
        myProcess.Start();            
        myProcess.BeginOutputReadLine();            
        Console.Read();
    }

    static void myProcess_OutputDataReceived(object sender,DataReceivedEventArgs e)
    {
        Console.WriteLine(e.Data);
    }
}

我想弄清楚我的表单应用程序会发生什么,但仍然找不到任何线索.
还有一件事是我无法通过Windows窗体应用程序获得警告消息.