Web页面上的控件

时间:2022-05-04 05:48:50

Web页面,即:.aspx文件
页面的根目录下,分为了5部分
  [0]-{System.Web.UI.LiteralControl}
  [1]-{System.Web.UI.HtmlControls.HtmlHead}
  [2]-{System.Web.UI.LiteralControl}
  [3]-{System.Web.UI.HtmlControls.HtmlForm}
  [4]-{System.Web.UI.LiteralControl}

内容依次为:
[0]-{System.Web.UI.LiteralControl}
  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  <html xmlns="http://www.w3.org/1999/xhtml" >

[1]-{System.Web.UI.HtmlControls.HtmlHead}
  <head>
    ......
  </head>

[2]-{System.Web.UI.LiteralControl}
  <body>

[3]-{System.Web.UI.HtmlControls.HtmlForm}
  <form>
    ......
  </form>

[4]-{System.Web.UI.LiteralControl}
  </body>
  </html>


所以,在遍历所有页面上的控件的时候,就在this.Controls[3]中找.

 

问题:遍历Web页面上所有的TextBox,并全部设置为1111

    protected void btn_Click(object sender, EventArgs e)
{

foreach ( System.Web.UI.Control contrl in this.Controls[3].Controls)
{
if (contrl is System.Web.UI.WebControls.TextBox)
{
System.Web.UI.WebControls.TextBox txt
= (System.Web.UI.WebControls.TextBox)contrl;
txt.Text
= "l";
}
}
}

那么遍历WinForm中的控件呢?

  private void button1_Click(object sender, EventArgs e)
{
foreach ( System.Windows.Forms.Control control in this.Controls)
{
if (control is System.Windows.Forms.TextBox)
{
System.Windows.Forms.TextBox txt
= (System.Windows.Forms.TextBox)control;
txt.Text
= "bbbb";
}
}
}