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Zippy
Zippy

Reputation: 495

Win Form application sending text to external application window

I am trying to automate some tasks and was wondering if a Windows Form C# .NET 4 app can target a textbox in an external application and paste text into it?

If not what would be a good solution if any?

Upvotes: 1

Views: 388

Answers (1)

Paul Farry
Paul Farry

Reputation: 4768

You can, but you will need to use the FindWindow* and SendMessage Windows API calls

http://www.pinvoke.net/default.aspx/user32.findwindow

I have used this for a project so that we could collect a serial number from a program and send them all back to our office rather than needing the user to copy/paste it.

after using the FindWindow to find the Field you are looking for, then you can use SendMessage with a messageType of WM_GETTEXT to Get the text and to Set the text WM_SETTEXT

Upvotes: 1

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