我创建了一个C＃应用程序，我在新线程问题中打开一个表单，这是线程停止并因此停止表单。 [英] I Have Created A C# Application And I M Opening A Form In New Thread Problem With This Is Thread Stop Itself And Hence Stopping The Form.

问题描述

private void button2_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                string name = openFileDialog1.FileName;
                FileInfo src = new FileInfo(openFileDialog1.FileName);



                Thread t = new Thread(() => startsending(src));
                // t.IsBackground = true;
                t.Start();

                //  sndfle.RunWorkerAsync(index + ":"+openFileDialog1.FileName);



            }
        }
        private void startsending(FileInfo src)
        {

            fileoperatrionform fm = new fileoperatrionform(cp, src);//this is constructor of fileoperationform and here cp is user defined class;
            

        }

推荐答案

您无法从非UI线程调用与UI相关的任何内容。相反，您需要使用 Invoke 或 System.Windows.Threading的方法。 Dispatcher （对于Forms或WPF）或 System.Windows.Forms.Control （仅限表单）。



您将在我过去的答案中找到有关其工作原理和代码示例的详细说明：

Control.Invoke（）与Control.BeginInvoke（） [ ^ ]，

使用Treeview扫描仪和MD5的问题 [ ^ ]。



另请参阅有关线程的更多参考资料：

如何让keydown事件在不同的操作上运行vb.net中的线程 [ ^ ]，

在启用禁用+多线程后控制事件未触发 [ ^ ]。

-SA

You cannot call anything related to UI from non-UI thread. Instead, you need to use the method Invoke or BeginInvoke of System.Windows.Threading.Dispatcher (for both Forms or WPF) or System.Windows.Forms.Control (Forms only).

You will find detailed explanation of how it works and code samples in my past answers:
Control.Invoke() vs. Control.BeginInvoke()[^],
Problem with Treeview Scanner And MD5[^].

See also more references on threading:
How to get a keydown event to operate on a different thread in vb.net[^],
Control events not firing after enable disable + multithreading[^].

—SA

这篇关于我创建了一个C＃应用程序，我在新线程问题中打开一个表单，这是线程停止并因此停止表单。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！