HtmlGenericControl.TagName Property

Reference

Definition

Namespace:: System.Web.UI.HtmlControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the name of the HTML element represented by the HtmlGenericControl control.

public:
 property System::String ^ TagName { System::String ^ get(); void set(System::String ^ value); };

public string TagName { get; set; }

member this.TagName : string with get, set

Public Property TagName As String

Property Value

String

The tag name of an element.

Examples

The following code example demonstrates how to use the TagName property to programmatically change a tag name from "Body" to "Font" and back.

ASP.NET (C#)

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  protected void BG_Button_Click(object sender, EventArgs e)
  {
    Body.Attributes["bgcolor"] = ColorSelect.Value;
  }

  protected void Font_Button_Click(object sender, EventArgs e)
  {
    Body.TagName = "Font";
    Body.Attributes["Color"] = ColorSelect.Value;
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
  <title>HtmlGenericControl Example</title> 
</head>
 
 <body id="Body" 
       runat="server"> 

     <h3>HtmlGenericControl Example</h3>

     <form id="form1" runat="server">
     <div>
       <br />
       Select a background color for the page: <br />
       <select id="ColorSelect" 
               runat="server">
           <option>White</option>
           <option>LightBlue</option>
           <option>LightGreen</option>
           <option>Yellow</option>
       </select>
       <br />
       <input type="submit" 
              runat="server"
              value="Change Background Color" 
              onserverclick="BG_Button_Click" id="Submit1" />
       <input type="submit" 
              runat="server" 
              value="Change Font Color" 
              onserverclick="Font_Button_Click" id="Submit2" />
     </div>
     </form>
 
 </body>
 </html>

<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
  
  Protected Sub BG_Button_Click(ByVal sender As Object, ByVal e As System.EventArgs)

    Body.Attributes("bgcolor") = ColorSelect.Value

  End Sub

  Protected Sub Font_Button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
    
    Body.TagName = "Font"
    Body.Attributes("Color") = ColorSelect.Value

  End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
  <title>HtmlGenericControl Example</title> 
</head>
 
 <body id="Body" 
       runat="server"> 

     <h3>HtmlGenericControl Example</h3>

     <form id="form1" runat="server">
     <div> 
       <br />
       Select a background color for the page: <br />
       <select id="ColorSelect" 
               runat="server">
           <option>White</option>
           <option>LightBlue</option>
           <option>LightGreen</option>
           <option>Yellow</option>
       </select>
       <br />
       <input type="submit" 
              runat="server"
              value="Change Background Color" 
              onserverclick="BG_Button_Click" id="Submit1" />
       <input type="submit" 
              runat="server" 
              value="Change Font Color" 
              onserverclick="Font_Button_Click" id="Submit2" />
     </div>
     </form>
 
 </body>
 </html>

Remarks

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

Applies to

Продукт	Версии
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

AI Skills Fest

Поделиться через