ASP.NET AutoPostBack 屬性
定義和用法
AutoPostBack 屬性用於設置或返回當用戶在列表控件中選擇一個項目時,是否發生自動回傳到服務器的操作。
如果把該屬性設置為TRUE,則啟用自動回傳,否則為FALSE。 默認是FALSE。
語法
<asp:SomeListControlAutoPostBack="TRUE|FALSE" runat="server"/>
實例
下面的實例把RadioButtonList 控件的AutoPostBack 屬性設置為"TRUE":
<script runat="server">
Sub Change(obj As Object, e As EventArgs)
Response.Write("You selected " & rb1.SelectedItem.Text)
End Sub
</script>
<form runat=server>
<asp:RadioButtonList id="rb1" AutoPostBack="True"
runat="server" OnSelectedIndexChanged="Change">
<asp:ListItem Text="Item 1" />
<asp:ListItem Text="Item 2" />
</asp:RadioButtonList>
</form>
Sub Change(obj As Object, e As EventArgs)
Response.Write("You selected " & rb1.SelectedItem.Text)
End Sub
</script>
<form runat=server>
<asp:RadioButtonList id="rb1" AutoPostBack="True"
runat="server" OnSelectedIndexChanged="Change">
<asp:ListItem Text="Item 1" />
<asp:ListItem Text="Item 2" />
</asp:RadioButtonList>
</form>
演示實例»
ListControl控件參考手冊