HTTPContext.Current.User.Identity.Name not working inside a control? - asp.net

Question

I have a label and I want to set text of this label to
HTTPContext.Current.User.Identity.Name
So I wrote
Text = '<%=HTTPContext.Current.User.Identity.Name %>'
but it doesn't work, however when I wrote this outside of the lable for example:
<h2>
<%=HTTPContext.Current.User.Identity.Name %>
</h2>
it works.

Answer 1

<asp:Label ID="lbUserName"
runat="server"
Text='<%# HttpContext.Current.User.Identity.Name %>'
/>
in Page_Load
if (!Page.IsPostBack )
{
lbUserName.DataBind();
}

Answer 2

use label like this
<asp:label id="lblx" runat="server" ><%= HTTPContext.Current.User.Identity.Name %></asp:label>

Answer 3

To bind the text like this you will have to create your own custom expression builder.
First, add such class to your namespace:
using System.Web.Compilation;
using System.CodeDom;
[ExpressionPrefix("Code")]
public class CodeExpressionBuilder : ExpressionBuilder
{
public override CodeExpression GetCodeExpression(BoundPropertyEntry entry,
object parsedData, ExpressionBuilderContext context)
{
return new CodeSnippetExpression(entry.Expression);
}
}
Next step is adding this to your web.config file:
<compilation debug="true">
<expressionBuilders>
<add expressionPrefix="Code" type="YourNameSpace.CodeExpressionBuilder"/>
</expressionBuilders>
</compilation>
Then finally this should work:
<asp:Label id="YourLabel" runat="server" Text='<%$ Code:HttpContext.Current.User.Identity.Name %>' />
Complicated way to achieve something simple, but this will allow you to use the syntax you want throught your whole project so might worth the extra effort.
Reference.