listing0508.aspx

来自「asp入门到精通的源代码」· ASPX 代码 · 共 31 行

ASPX
31
字号
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Drawing" %>

<script runat="server">
   sub NameHandler(obj as object, e as eventargs)
      lblMessage.Text = tbName.Text & ", select a color: "
   end sub   

   sub ListHandler(obj as object, e as eventargs)
      lbColor.BackColor = Color.FromName(obj.SelectedItem.Text)
   end sub
</script>

<html><body>
   <form runat="server">
      <asp:Textbox id="tbName" runat="server"
         OnTextChanged="NameHandler"
         AutoPostBack="true" /><p>
      
      <asp:Label id="lblMessage" runat="server"
         Text="Select a color: " /><p>
      <asp:Listbox id="lbColor" runat="server"
         OnSelectedIndexChanged="ListHandler"
         AutoPostBack="true" >
         <asp:Listitem>Red</asp:Listitem>
         <asp:Listitem>blue</asp:Listitem>
         <asp:Listitem>green</asp:Listitem>
         <asp:Listitem>white</asp:Listitem>
      </asp:Listbox>
   </form>
</body></html>

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