In C #,

Since C # does not allow non-creative control threads to call controls, many problems have been encountered.

Tip:

The Inter-thread operation is invalid: It is accessed by a thread that does not create the "showtable_btn" control.

Somewhat depressing

Because it was just using thread

OriginalCodeProbably as follows:

Private void showtable_btn_click (Object sender, eventargs E)

{

Thread t = new thead (s)

T. Start ()

}

 

Private void S ()

{

Textbox1.text = "www ";

}

 

If the preceding error is reported

 

So I made changes.

 

1. Add

Delegate void setvisibledelegate ();

2. Add a new function

Privare void sinvoke ()

{

This. Invoke (New setvisibledelegate (s ))

}

3. Call again later

Private void showtable_btn_click (Object sender, eventargs E)

{

Thread t = new thead (sinvoke)

T. Start ()

} In this case, everything will be OK.