AttributeCollection.Item[String] 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取或设置服务器控件的指定特性值。
public:
property System::String ^ default[System::String ^] { System::String ^ get(System::String ^ key); void set(System::String ^ key, System::String ^ value); };public string this[string key] { get; set; }member this.Item(string) : string with get, setDefault Public Property Item(key As String) As String参数
- key
- String
集合中的特性的位置。
属性值
特性值。
示例
以下示例演示如何设置动态 HTML onblur 属性以在 Web 服务器控件失去焦点时 TextBox 运行 ECMAScript (JavaScript) 命令。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Attributes Property of a Web Control</title>
<script language="c#" runat="server">
void Page_Load(Object sender, EventArgs e) {
TextBox1.Attributes["onblur"]="javascript:alert('Hello! Focus lost from text box!!');";
}
</script>
</head>
<body>
<h3>Attributes Property of a Web Control</h3>
<form id="form1" runat="server">
<asp:TextBox id="TextBox1" columns="54"
Text="Click here and then tab out of this text box"
runat="server"/>
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Attributes Property of a Web Control</title>
<script language="vb" runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
TextBox1.Attributes("onblur")="javascript:alert('Hello! Focus lost from text box!!');"
End Sub
</script>
</head>
<body>
<h3>Attributes Property of a Web Control</h3>
<form id="form1" runat="server">
<asp:TextBox id="TextBox1" columns="54"
Text="Click here and then tab out of this text box"
runat="server"/>
</form>
</body>
</html>
注解
可以向使用此属性的 ASP.NET 服务器控件添加属性或从检索属性。