How to Clear all the data of open windows form of another exe?

Question

Hi,
I want to make utility which will clear all the data from one windows application.
i know the application name. The application of which data i want to clear is made in C# and contains many windows forms and controls.
out of that opened windows form and controls inside it need to be cleared.
Please guide on how to do this in C#?

Answer 1

Short version: Find the window and send it a message with
SendMessage.
Open up Spy++ and find your form's window.  You will see that the window has children and they have classes of the form "WindowsForms10.EDIT.*"  Those are TextBox controls.  You can call things like SetWindowText to set the
text of the window to clear it.
To do this programmatically, you'll have to obtain the window hand that corresponds to the control.  You can find windows with
FindWindowEx or
EnumWindows.  Locate the window by name or class or whatever else you can determine about it.  Find the child windows and "clear" them however you wish.  I assume you mean to set empty strings to all the TextEdit controls. If you
intend to do something more sophisticated than that, then you'll have to be more specific about what you mean by "Clear all the data".
It may or may not be obvious that you'll be poking around with Win32 API calls via PInvoke to accomplish much of this. Example:
SetWindowText via PInvoke.