AttributeCollection.Item[String] 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得或設定伺服器控制項的指定屬性值。
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參數
- key
- String
屬性在集合中的位置。
屬性值
屬性值。
範例
下列範例示範如何在 Web 服務器控制項失去焦點時 TextBox ，設定動態 HTML onblur 屬性來執行 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>
備註
您可以在使用這個屬性的 ASP.NET 伺服器控制項中加入或擷取屬性。