This topic has not yet been rated - Rate this topic

AttributeCollection.Add Method

.NET Framework 4

Other Versions

Adds an attribute to a server control's AttributeCollection object.

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

Syntax

C++

Copy

public void Add(
	string key,
	string value
)

Parameters

key: Type: System.String
The attribute name.

value: Type: System.String
The attribute value.

Remarks

If the string in the value parameter contains an ampersand (&), the character is automatically encoded. The resulting HTML representation is "&".

Examples

The following example shows how to use the Add method to programmatically add an attribute to an ASP.NET server control AttributeCollection object.

Copy


<%@ 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.Add("Multiple", "True");
    }
</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" 
            runat="server">
       <option>This</option>
       <option>That</option>
       <option>Other</option>
    </select>
    <br/><br/>

    <input type="submit" 
           id="submitbtn"
           value="modify attribute" 
           onserverclick="SubmitBtn_Click" 
           runat="server"/>
    </div>
 </form>
 </body>
 </html>

Version Information

.NET Framework

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

Platforms

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.

Reference

AttributeCollection Class

System.Web.UI Namespace

Attributes

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

Community Content Add

FAQ