AttributeCollection.Add(String, String) 方法

定义

将特性添加到服务器控件的 AttributeCollection 对象。

public:
 void Add(System::String ^ key, System::String ^ value);
public void Add (string key, string value);
member this.Add : string * string -> unit
Public Sub Add (key As String, value As String)

参数

key
String

特性名称。

value
String

特性值。

示例

下面的示例演示如何使用 Add 方法以编程方式将属性添加到 ASP.NET 服务器控件 AttributeCollection 对象。

<%@ 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>
<%@ 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 SubmitBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        FirstSelect.Attributes.Add("Multiple", "True")
    End Sub
</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>

注解

如果 参数中的 value 字符串包含与号 (&) ,则会自动对字符进行编码。 生成的 HTML 表示形式为“&”。

适用于

另请参阅