復制代碼 代碼如下:

Panel spnButtons = new Panel();
Button btn = new Button();
btn.ID = "btn1";
spnButtons.Controls.Add(btn);
// 輸出True，表示沒有找到控件
Response.Write(spnButtons.FindControl(btn.ID) == null);

復制代碼 代碼如下:

Panel spnButtons = new Panel();
Page.Controls.Add(spnButtons);// 創建Panel后把它加入Page

Button btn = new Button();
btn.ID = "btn1";
spnButtons.Controls.Add(btn);
// 輸出False，表示找到了控件
Response.Write(spnButtons.FindControl(btn.ID) == null);

復制代碼 代碼如下:

Repeater spnButtons = new Repeater();

Button btn = new Button();
btn.ID = "btn1";
spnButtons.Controls.Add(btn);
// 輸出False，表示找到了控件
Response.Write(spnButtons.FindControl(btn.ID) == null);

復制代碼 代碼如下:

public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
myPanel spnButtons = new myPanel();

Button btn = new Button();
btn.ID = "btn1";
spnButtons.Controls.Add(btn);

Response.Write(spnButtons.FindControl(btn.ID) == null);
}


}

public class myPanel : Panel, INamingContainer
{
public myPanel():base()
{
}
}