Control another form in another application with c#

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I want to know can I control another form in another application ?
like the textBox in other application or the button.
Can I ???

Posted 3-Sep-10 22:11pm

Mohammed K.M

Updated 3-Sep-10 22:34pm

Sandeep Mewara

v2

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Mohammed K.M 4-Sep-10 6:00am

I mean that I can send a string to textBox to another application.
ex: There is atextbox "username" and textbox "password" in my application I can send the username and password
to that application .
Can I??

3 solutions

Solution 1

No, as such you cannot. There would be security and other issues.

Posted 3-Sep-10 22:32pm

Sandeep Mewara

Solution 3

Yes you can but it can get nasty.
Every control in a windows system has a handle. You need to find the handle for the control you want access to.
Once you have the handle you can use SendMessage[^] to send whatever you need.

Posted 4-Sep-10 2:45am

DaveyM69

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Yusuf · Accepted Answer · 2010-09-03T23:29:00

What exactly do you mean by "control"? If both applications are yours, then you can send messages between them to communicate and take action appropriately. But I don't see any advantage on doing it. In fact it is will be the opposite.

If the applications are not yours, You can instrument and send windows messages, but that is completely different story.

So, in short, better Not.