The operation executed on the control is being called from the wrong thread. This operation can be performed only when control. invoke or control. begininvoke is sent to the correct thread. (To solve)

Source: Internet
Author: User
If you are interested in this article, you may have encountered the following exceptions during programming:
1. The Inter-thread operation is invalid: It is accessed by a thread that does not create the control "X. (X indicates the control name.) 2. "operations performed on the control are being called from the wrong thread. This operation can be performed only when control. invoke or control. begininvoke is sent to the correct thread. "

This kind of prompt is most likely caused by cross-thread access to the control. For example,

The Code is as follows:

 

Using system;
Using system. Collections. Generic;
Using system. componentmodel;
Using system. Data;
Using system. drawing;
Using system. LINQ;
Using system. text;
Using system. Windows. forms;
Using system. Threading;

Namespace windowsformsapplication6
{
Public partial class form1: Form
{
Public form1 ()

{
Initializecomponent ();
}

Public Delegate void mymethod (); // declare a delegate for other threads to access

// Button
Private void button#click (Object sender, eventargs E)
{
Thread AAA = new thread (New threadstart (opendialogonotherthread ));
AAA. Start ();
}

// Other thread dialog box
Void opendialogonotherthread ()
{
Mymethod opendialog = new mymethod (this. opendialog );
This. Invoke (opendialog); // In the current thread, call opendialog
}

// Open the dialog box
Void opendialog ()
{
Openfiledialog = new openfiledialog ();
Openfiledialog. showdialog ();
}
}
}


 

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.