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AttributeCollection.Remove Method

Removes an attribute from a server control's AttributeCollection object.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)
public void Remove(
	string key
)

Parameters

key
Type: System.String

The name of the attribute to remove.

If the AttributeCollection object does not contain an attribute that has the specified key, the collection remains unchanged. No exception is thrown.

The following example shows how to programmatically remove an attribute from an HTML server control's AttributeCollection object.

<%@ 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 SubmitBtn_Click(object sender, EventArgs e)
    {
        FirstSelect.Attributes.Remove("Size");
    }

</script>

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

 <body>
    <form id="form1" runat="server">
    <div>
    Make a selection:
    <select id="FirstSelect"
            size="10"
            runat="server">
       <option>This</option>
       <option>That</option>
       <option>Other</option>
    </select>
    <br/><br/>

    <input type="submit" 
           id="SubmitBtn"
           value="Remove Size Attribute" 
           onserverclick="SubmitBtn_Click" 
           runat="server"/>
    </div>
 </form>
 </body>
 </html>

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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