windows form application

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i want to create a windows application in c# which open the windows calculator and also i close that calculator using the same win.application.finaly i want to read the content of windows calc text box and paste that in text box present in my application when i use close button in my win application.

so far i use the below code in button click event to open the windows calc but i don't know how to close that windows calci using button click event and also am unable to read the text of windows calci text box

my code:

C#

private void button1_Click(object sender, EventArgs e)
{
      Process p = Process.Start("calc");
}

this will open the windows calc but don't close.please help meee...

Thanks in advance....

Posted 7-Sep-11 5:02am

gopinath rethinam

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Mehdi Gholam 7-Sep-11 11:12am

Hooking into non .net processes is a quite involved and advanced topic, are you sure you want to do it?

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Pete O'Hanlon · Answer 1 · 2011-09-07T05:16:00

OK, without knowing your skill level with C#, it's going to be difficult to answer this for you without actually writing all the code. The first parts are easy - basically, you have started an instance of calc, but you are storing the result in a local variable. If you want to end that same process, you should make the variable a member instead, and use that to end the application. To close the process, you would typically want to do this:

C#

_process.CloseMainWindow();
_process.Close();

Now, as to actually reading the value of the textbox, that's where the code becomes a whole lot more complicated because you are going to have to jump into the world of the Windows API to manage this.

To be honest, a simpler method would be to simply roll your own calculator application and use that - there's a pretty good article here[^] that might help.