Question

VS里面Listbox怎么实现选中一项，在textbox里显示相应的内容？也就是Listbox怎么把值传递出来？

Answer 1

<asp:ListBox ID="ListBox1" runat="server" AutoPostBack="True"
onselectedindexchanged="ListBox1_SelectedIndexChanged">
<asp:ListItem>测试</asp:ListItem>
<asp:ListItem>测试2</asp:ListItem>
</asp:ListBox>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

后台代码：
protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (ListBox1.SelectedValue!=null)
{
TextBox1.Text = ListBox1.SelectedValue;
}
}