📄 panel.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Page Language="C#"%>

<script runat="server">

void Button_Click(Object sender, EventArgs e)
{

  if ( dropFavSite.SelectedIndex == 3 ) {
    pnlOtherSite.Visible = true;
  } else {
    pnlOtherSite.Visible = false;
  }
}

</Script>

<html>
<head><title>Panel.aspx</title></head>
<body>

<form Runat="Server">

Select your favorite ASP Web site:
<br>
<asp:RadioButtonList
  ID="dropFavSite"
  Runat="Server">
  <asp:ListItem Text="Superexpert" />
  <asp:ListItem Text="LearnASP" />
  <asp:ListItem Text="DotNetJunkies" />
  <asp:ListItem Text="Other Site" />
</asp:RadioButtonList>

<asp:Panel
  ID="pnlOtherSite"
  Visible="False"
  Runat="Server">

  <p>
  Other Site:
  <br>
  <asp:TextBox
    ID="txtOtherSite"
    Runat="Server" />

</asp:Panel>
<p>

<asp:Button
  Text="Submit!"
  OnClick="Button_Click"
  Runat="Server" />

</form>
</body>
</html>

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