怎么给动态添加的textbox控件添加textchaged事件

Question

RT
最好给代码，不要链接。

Answer 1

        TextBox tb = new TextBox();
        tb.TextChanged += new EventHandler(tb_TextChanged);        void tb_TextChanged(object sender, EventArgs e)
        {
            throw new Exception("The method or operation is not implemented.");
        }

Answer 2

        private void toolStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)//工具栏
        {            if (e.ClickedItem.Text == "附件")
            {
                if (openFileDialog1.ShowDialog() ==DialogResult.OK)
                {
                    attach.Name = "attachs";
                    attach.Width = 550;
                    attach.Height = 21;
                    attach.Location = new Point(72, 68);
                    splitContainer1.Panel1.Controls.Add(attach);
                    lbl.Name = "fujian";
                    lbl.Text = "附件：";
                    lbl.Location = new Point(21, 68);
                    splitContainer1.Panel1.Controls.Add(lbl);
                    toolStrip2.Location = new Point(13, 98);
                    splitContainer1.SplitterDistance = 135;
                    filename = openFileDialog1.FileNames;
                   
                    foreach (string var in openFileDialog1.SafeFileNames)
                    {
                        attach.Text +=var+" ";
                    }
                    attach.TextChanged += new EventHandler(this.attach_TextChanged);
                }
            }        }
        private void attach_TextChanged(object sender, EventHandler e)
        {
            if (attach.Text == "")
            {
                splitContainer1.Panel1.Controls.Remove(attach);
                splitContainer1.Panel1.Controls.Remove(lbl);
                toolStrip2.Location = new Point(13, 68);
                splitContainer1.SplitterDistance = 105;
            }
        }
跟你的有区别吗？错误 1 “attach_TextChanged”的重载均与委托“System.EventHandler”不匹配

Answer 3

private void attach_TextChanged(object sender, EventHandler e)
红字改为EventArgs

Answer 4

在VS中textbox.TextChanged += 后用2下TAB键，会自动出来，可以自己修改下托管函数的名称