📄 listboxvalueselected.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

字号:

<Script Runat="Server">

Sub Button_Click( s As Object, e As EventArgs )
    lblSelectedIndex.Text = lstStateOfResidence.SelectedIndex
    lblSelectedText.Text = lstStateOfResidence.SelectedItem.Text
    lblSelectedValue.Text = lstStateOfResidence.SelectedItem.Value
  End Sub

</Script>

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

<form Runat="Server">

<asp:ListBox
  ID="lstStateOfResidence"
  Runat="Server">
  <asp:ListItem
    Text="California"
    Value="CA" />
  <asp:ListItem
    Text="Massachusetts"
    Value="MA"
    Selected="True"/>
  <asp:ListItem
    Text="Ohio"
    Value="OH" />
</asp:ListBox>

<p>

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

<hr>

Selected Index:
<asp:Label
  ID="lblSelectedIndex"
  Runat="Server" />

<p>
Selected Text:
<asp:Label
  ID="lblSelectedText"
  Runat="Server" />

<p>
Selected Value:
<asp:Label
  ID="lblSelectedValue"
  Runat="Server" />

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

⌨️ 快捷键说明

复制代码 Ctrl + C

搜索代码 Ctrl + F

全屏模式 F11

切换主题 Ctrl + Shift + D

显示快捷键 ?

增大字号 Ctrl + =

减小字号 Ctrl + -