CheckBox控件

前台代码：

1 <asp:CheckBox ID="CheckBox1" runat="server" Text ="苹果"/>
2 <asp:CheckBox ID="CheckBox2" runat="server" Text ="柠檬"/>
3 <asp:CheckBox ID="CheckBox3" runat="server" Text ="橘子"/>
4 <asp:CheckBox ID="CheckBox4" runat="server" Text ="桃子"/>
5 <asp:Button ID="Button2" runat="server" Text="结果" OnClick ="Button2_Click"/>
6 <asp:Label ID="Label2" runat="server" Text=""></asp:Label>

后台代码：

 1 /// <summary>
 2 /// Button单击事件
 3 /// </summary>
 4 /// <param name="sender"></param>
 5 /// <param name="e"></param>
 6 protected void Button2_Click(object sender, EventArgs e)
 7 {
 8     string s = string.Empty;
 9 
10     if (this.CheckBox1.Checked)
11     {
12         s += this.CheckBox1.Text + " ";
13     }
14     if (this.CheckBox2.Checked)
15     {
16         s += this.CheckBox2.Text + " ";
17     }
18     if (this.CheckBox3.Checked)
19     {
20         s += this.CheckBox3.Text + " ";
21     }
22     if (this.CheckBox4.Checked)
23     {
24         s += this.CheckBox4.Text + " ";
25     }
26 
27     this.Label2.Text = "你选择的水果有：" + s;
28 }

最终效果;

以上就是CheckBox控件的用法。