Update control content across threads in winform

Today, when I was working on a winform project, I encountered a problem that I needed to update the GUI across threads. By default, winform does not allow cross-thread update of GUI controls. If you do this, an error is reported, therefore, we need to make some changes. In my solution, we use the updating your form from another thread without creating delegates for every type of update.CodeThe Code is as follows:

  //  Create a class for adding extension methods  
  Public   Static   Class Extensionmethod
{
 Public   Static Tresult safeinvoke <t, tresult> ( This T ISI, func <t, tresult> call) Where T: isynchronizeinvoke
{
 If (ISI. invokerequired ){
Iasyncresult result = Isi. begininvoke (call, New   Object [] {ISI });
 Object Endresult = Isi. endinvoke (result ); Return (Tresult) endresult;
}
 Else 
{
 Return Call (ISI );
}
}

 Public   Static   Void Safeinvoke <t> ( This T ISI, Action <t> call) Where T: isynchronizeinvoke
{
 If (ISI. invokerequired)
{
Isi. begininvoke (call, New   Object [] {ISI });
}
 Else 
{
Call (ISI );
}
}
}

 //  Such an application in a class  
  Private   Void Button#click ( Object Sender, eventargs E)
{

Thread thread = New Thread ( New Threadstart (startcalculation ));
Thread. Start ();
}

 Private   Void Startcalculation ()
{
Button1.safeinvoke (D => D. Enabled = False );

 For ( Double I = 0 ; I <= 10000000000 ; I ++)
{
 String Textforlabel = (I) + "  % " ;

Lblprocent. safeinvoke (D => D. Text = textforlabel );
 VaR I1 = I;
Progressbar1.safeinvoke (D => D. value = 10 );
 String Labeltext = lblprocent. safeinvoke (D => D. Text );

}
 This . Safeinvoke (D => D. refreshtree ());
Button1.safeinvoke (D => D. Enabled = True );
}

Private   Void Refreshtree ()
{
Thread. Sleep ( 10000 );
 This . Treeview1.expandall ();
 This . Treeview1.nodes [ 0 ]. Nodes [ 1 ]. Remove ();
}

note that the startcalculation method is executed in the new thread, but safeinvoke (for example, refreshtree ) it is still executed in the main thread . If you have resource-consuming code in these methods (such as the thread here. sleep ( 10000 )) the Program still has a false dead state of stopping the response.