如何在线程中访问相同形式的图片框?跨线程无效-异常 [英] How to access Picture box in Same form in thread ? Cross-threadperation not valid - Exception

问题描述

这是我的代码

Here is my code

private void RefreshButton_Click(object sender, EventArgs e)
{

Thread thread = new Thread(new ThreadStart(VisibleLoadImage));
thread.Start();


RefreshButtonOKClick(); // DO SOMETHING

}


private void VisibleLoadImage()
{
 LoadPictureBox.Show();  
(or)
''Exception - Cross-threadperation not valid: Control ''groupBoxView'' accessed from a thread other than the thread it was created ''
 LoadPictureBox.Visible = true;           
}

How to access Picture box in Same form?

推荐答案

问题不是相同的表单，而是不同的线程.您需要告诉我们您正在使用什么框架，但是

The issue is not the same form, it''s a different thread. You need to tell us what frameworks you''re using, but this[^] is broadly what you need.

您需要对其进行锁定:

You need to pinvoke it:

private void MakeVisible(PictureBox p, bool vis)
    {
    if (InvokeRequired)
        {
        Invoke(new MethodInvoker(delegate { MakeVisible(p, vis); }));
        }
    else
        {
        p.Visible = vis;
        }
    }

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