Printdialog自动取消（超时） [英] Printdialog auto cancel (timeout)

问题描述

嗨


如果DialogResult没有返回60秒，我想让printdialog自动取消。



我尝试了什么：



我用这段代码开始吧。我想我需要一种方法来引入计时器来取消pdi，但我输了。

Hi
I want to have a printdialog auto cancel itself if the DialogResult isn't returned for say 60 seconds.

What I have tried:

I use this bit of code to kick it off. I guess I need a way to introduce a timer to cancel the pdi but I'm lost.

using (PrintDialog pdi = new PrintDialog())
{
   if (pdi.ShowDialog(this) == DialogResult.Cancel)
   {
      return;
   }

   printPages();
}

推荐答案

private void button1_Click( object sender, EventArgs e ) {

   Timer timer = new Timer() {
      Interval = 10000
   };

   timer.Tick += Timer_Tick;
   timer.Start();

   try {
      using ( PrintDialog pdi = new PrintDialog() ) {
         if ( pdi.ShowDialog( this ) == DialogResult.Cancel ) {
            return;
         }
         MessageBox.Show( "Printing" );
      }
   } finally {
      timer.Stop();
      timer.Dispose();
   }
}

private void Timer_Tick( object sender, EventArgs e ) {
   SendKeys.Send( "{ESC}" );
}

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