Question

现有一listbox 其中的值为多选项,怎样用Lable接受其值

Answer 1

private void listBox_SelectedIndexChanged(object sender, EventArgs e)
{
this.Lable.Text = this.listBox.SelectedItem.ToString();
}

Answer 2

你选择listbox后，就在listbox的改变事件里面将当前选中值赋给lable

Answer 3

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
label1.Text = "";
for (int i = 0; i < listBox1.SelectedItems.Count; i++)
{

label1.Text = label1.Text + listBox1.SelectedItems[i].ToString();
}
}

Answer 4

后台事件：
protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (ListItem lt in CheckBoxList1.Items)
{
if (lt.Selected)
{
Label1.Text += lt.Text;
}
}
Response.Write(Label1.Text);
}

前台：
<asp:Label ID="Label1" runat="server"></asp:Label>
<asp:CheckBoxList ID="CheckBoxList1" runat="server" AutoPostBack="True"
onselectedindexchanged="CheckBoxList1_SelectedIndexChanged">
<asp:ListItem>11</asp:ListItem>
<asp:ListItem>22</asp:ListItem>
<asp:ListItem>33</asp:ListItem>
<asp:ListItem>44</asp:ListItem>
<asp:ListItem>55</asp:ListItem>
</asp:CheckBoxList>