how to get the value of a control if it 's handle is zero?

do you know if this program was written in .NET?

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Thank you for your answer. The form is created in another program,so I don't know about the name of the form.
Besides,I could only get the handle of the form .Could I use Form.Controls to loop? If yes , how can do it?I really have no idea.
Hoping for your answer!

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PJ Martins16y ago

If you know the name of the control you can simply try to find it through the Form.Controls.Find method. If you do not know the name, you'll have to loop through the Form.Controls collection and search the control by type.

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