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HtmlControl.TagName Property

Gets the element name of a tag that contains a runat=server attribute and value pair.

Namespace:  System.Web.UI.HtmlControls
Assembly:  System.Web (in System.Web.dll)

public virtual string TagName { get; }

Property Value

Type: System.String
The element name of the specified tag.

Use this property to programmatically determine the element name of the HTML server control. For example, the TagName property of the server-side <div id="myDiv" runat=server> element contains the value "div".

The following code example demonstrates how to use the TagName property to programmatically determine the element name of a tag.

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<html xmlns="" >
    <title>HtmlControl TagName Property Example</title>
<script language="C#" runat="server">

      void Submit_Clicked(Object sender, EventArgs e) 

         Message.InnerHtml = "My TagName is: " + Submit1.TagName;



   <form id="form1" method="post" runat="server">

      <h3>HtmlControl TagName Property Example</h3>

      <input id="Submit1"        
             value="Click Me!!"

      <br /><br />

      <span id="Message" runat="server"/>  



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.