查找控件无法找到使用文字控件创建的控件

Question

this is MyFirstRow in my .aspx file:

<ul class="dropdown-menu" id="MyFirstRow" runat="server">

I created the control with this Code in CodeBehind :

Control Con = FindControl("MyFirstRow");
LiteralControl LCx = new LiteralControl();
LCx.Text = @"<li class='dropdown' id='MyFirstRow34' runat='server'>
<a href='#'>Sample<span class='caret'></span></a></li>";
Con.Controls.Add(LCx);

so far everything is ok, but after next line when I use this code, this not able to find any control In the event that this added Correctly:

Con = FindControl("MyFirstRow34");

where is my mistake? tnx for your response.

Edited : My question is how to access this control with id=MyFirstRow34 in Code-Behind?

Answer 1

The <li class='dropdown' id='MyFirstRow34' runat='server'> string content assigned to the LiteralControl doesn't get interpreted by ASP.NET ; this string is only part of the html output.

In order to find the control by the given Id, you must assign the Id to the controls ID property, as shown below.

LiteralControl LCx = new LiteralControl { ID = "MyFirstRow34" };

The full code of your example will look like this:

Control Con = FindControl("MyFirstRow");
LiteralControl LCx = new LiteralControl { ID = "MyFirstRow34" };
LCx.Text = @"
    <li class='dropdown'>
        <a href='#'>Sample<span class='caret'></span></a>
     </li>";
Con.Controls.Add(LCx);

Control myFirstRow34 = FindControl("MyFirstRow34");