C# Get Textbox value in backgroundworker dowork event

Question

In my windows forms application I have a textbox and backgroundworker component. In dowork event of the backgroundworker I am trying to access value of the textbox. How can i do that? I'm getting following exception in dowork event handler code when I try to access value of the textbox:

Cross-thread operation not valid: Control 'txtFolderName' accessed from a thread other than the thread it was created on`

Answer 1

You can only access textbox / form controls in GUI thread, you can do so like that.

if(txtFolderName.InvokeRequired)
{
    txtFolderName.Invoke(new MethodInvoker(delegate { name = txtFolderName.text; }));
}