How to wait for a window to appear before sending keystrok using sendkeys?

Paramhans Dubey

Hi Experts, I have an application in C# where i am calling a .reg file using process class. now i want to send keystroke y first and then i need to wait for next megssage box to appear then send enter to it.

System.Diagnostics.Process.Start(Application.StartupPath + "\\dsnbackup.reg");

        SendKeys.Send("{y}");
        SendKeys.Send("{ENTER}");

now first ket strok is working fine but not the second one. Because the second window takes some time to appear. Can anybody tell me how can i wait for the window to appear first then send the enter key stroke. Please Help Regards, Paramhans Dubey.

Mycroft Holmes

Why not put a #n seconds delay between the commands. Find out the windows handle of the dialog and poll the windows collect to detect when it is present.

Luc Pattyn

Hi, the quick and dirty solution is by inserting a sufficiently large delay (Thread.Sleep). the higher performance solution I typically use needs some P/Invoke to Win32 functions such as GetForegroundWindow and GetWindowText, all in a polling retry-and-sleep loop. :)

Luc Pattyn

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Paramhans Dubey

By Replacing

System.Diagnostics.Process.Start(Application.StartupPath + "\\dsnbackup.reg");

with

System.Diagnostics.Process.Start("RegEdit.exe", "/S " + '"'.ToString() + Application.StartupPath + "\\dsnbackup.reg" + '"'.ToString());

solved my problem. /S is used for merger in silent mode.

Paramhans Dubey

Thanx anyways guys for your replies.

Luc Pattyn

Hi, I have two comments: 1. What you say does not achieve "i want to send keystroke y first and then i need to wait" at all. Make sure you ask the right question in future. 2. There is a shorthand for '"'.ToString(), it is "\"" and you can even merge it with a previous string literal. :)

Luc Pattyn

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