c# - 在动态创建的事件处理程序中访问动态创建的控件(文本框)

Question

我正在尝试在 Button 的事件处理程序中访问我在 C# 中动态创建的 TextBox。

     void MainFormLoad(object sender, EventArgs e)
     {
        this.Width=600;
        this.Height=400;

        this.FormBorderStyle= FormBorderStyle.FixedDialog;
        TextBox t=new TextBox();
        this.Controls.Add(t);
        t.Location = new Point(60,40);
        Label Mylable=new Label();
        this.Controls.Add(Mylable);
        Mylable.Location=new Point(15,43);
        Mylable.Text="string : ";
        t.Width=200;
        t.Name="MyText";
        t.Refresh();
        Button Myb=new Button();
        Myb.Location=new Point(270,40);
        this.Controls.Add(Myb);
        Myb.Text="Reverse it!";
        Myb.Name="Mybo";
        Myb.Click += new EventHandler(this.Myb_Clicked);
        this.Refresh();                     
    }

    void Myb_Clicked(object sender, EventArgs e) {

              // HOW SHOULD I GAIN ACCESS to MyText.Text HERE
              MessageBox.Show();

    }

Answer 1

为您的动态 TextBox 指定一个名称:

 TextBox t=new TextBox();
 t.Name = "MyTextBox";
 this.Controls.Add(t);

然后:

void Myb_Clicked(object sender, EventArgs e) {

    string text = this.Controls["MyTextBox"].Text;

}