Additional Information: Invalid inter-thread operation: access it from a thread other than the one that created the control's control name.

In a multithreaded program, the newly created thread cannot access the window controls created by the UI thread, and if you need to access the controls in the window, there are the following workarounds

1. You can set Checkforillegalcrossthreadcalls to false in the window constructor

Public Form1 () {    InitializeComponent ();    Checkforillegalcrossthreadcalls = false;}

2. Using delegate invocation

Declaring a delegate:

Private delegate void Mydelegateui ();

Use delegates to execute in multiple threads:

Mydelegateui d = delegate{   This.stateLabel.Text = "Reading target file";}; This.stateLabel.Invoke (d);

This is the 2 ways to solve multi-threaded interface element operations.

Additional Information: Invalid inter-thread operation: access it from a thread other than the one that created the control's control name.