Use delegate to resolve "inter-thread operation is invalid: Access it from a thread that is not creating a control" TextBox1 "

This type of problem is often encountered in WinForm programming, resulting in the inability of worker threads to assign a value to a control

1 //Defining Delegates2 3 Private Delegate voidSettextcallback (stringtext);4 5  6 7 //The following method is called when assigning a value to TextBox1.Text8 9 Private voidSetText (stringtext)Ten         { One             //invokerequired need to compare call thread ID and create thread ID A             //returns True if they are not the same -             if( This. textbox1.invokerequired) -             { theSettextcallback d =NewSettextcallback (SetText); -                  This. Invoke (D,New Object[] {text}); -             } -             Else +             { -                  This. TextBox1.Text =text; +             } A}

Use delegate to resolve "inter-thread operation is invalid: Access it from a thread that is not creating a control" TextBox1 "