ASP.NET Dynamically creating & setting different ID for the same controls

Question

is it possible to render the same controls with different ID property ?

<%for (int i = 0; i < 15; i++)
  {%>
     <asp:Label ID='Label<%=i.ToString() %>' runat="server"/>
<%}%>

here is an error: 'Label<%=i.ToString() %>' is not a valid identifier.

Why not do this in code-behind, like add Labels to a Panel?

Jerome
– Jerome

2010-08-26 11:05:45 +00:00
Commented Aug 26, 2010 at 11:05 — Jerome
– Jerome, Commented Aug 26, 2010 at 11:05

Alex Reitbort · Accepted Answer · 2010-08-26 11:06:00Z

2

Yes, it is possible but from code behined, not WebForms mark-up. From WebForm mark-up you can add only "html" controls in loop, not "asp.net" controls.

From code behind you can do:

for( int i=0;i<15;i++)
{
    var l = new Label();
    Label.ID = "Label" + i;
    Controls.Add(l);
}

answered Aug 26, 2010 at 11:06

Alex Reitbort

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Comments

Jaider · Accepted Answer · 2013-05-23 19:33:06Z

1

Usually in cases like this, you don't need to create asp.net controls... so, you can do this:

<%for (int i = 0; i < 15; i++)
  {%>
     <label id="Label<%=i.ToString() %>"></label>
<%}%>

answered May 23, 2013 at 19:33

Jaider

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