ASP.NET中 CheckBox复选框控件的使用
我们可以使用两种类型的 ASP.NET 控件将复选框添加到 Web 窗体页上:单独的 CheckBox 控件或 CheckBoxList 控件。两种控件都为用户提供了一种输入布尔型数据(真或假、是或否)的方法。
这里我们单独使用CheckBox,先来看看它的属性
让我们来做个简单的示例来演示一下
前台代码:
<%@ Page Language="C#" AutoEventWire【文章出处:欧洲服务器】up="true" CodeFile="CheckBox.aspx.cs" Inherits="WebControls_CheckBox" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <style type="text/css"> .style1 { width: 107px; } </style> </head> <body> <form id="form1" runat="server"> <div> <h3>CheckBox(复选框)</h3> <table style="width: 100%;"> <tr> <td class="style1"> 属性</td> <td> 值</td> <td> 作用</td> </tr> <tr> <td class="style1"> Checked</td> <td> ture|false</td> <td> 选中状态|未选状态 </td> </tr> </table> <hr /> 请选择你喜欢的运动: <asp:CheckBox ID="chkSport" runat="server" Text="篮球" Checked="true" /> <asp:CheckBox ID="chkSport2" runat="server" Text="足球" /> <asp:CheckBox ID="chkSport3" runat="server" Text="地瓜" /> <br /> <asp:Button ID="btnSubmit" runat="server" Text="提交" onclick="btnSubmit_Click" /> <hr /> 你选择的爱好是:<asp:Label ID="lblState" runat="server"></asp:Label> </div> </form> </body> </html>
后台代码:
using System; using System.Collections.Generic; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class WebControls_CheckBox : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void btnSubmit_Click(object sender, EventArgs e) { lblState.Text = string.Empty; if (chkSport.Checked) { lblState.Text = lblState.Text + chkSport.Text; } if (chkSport2.Checked) { if (lblState.Text.Length == 0) { lblState.Text = chkSport2.Text; } else { lblState.Text = lblState.Text + "," + chkSport2.Text; } } if (chkSport3.Checked) { if (lblState.Text.Length == 0) { lblState.Text = chkSport2.Text; } else { lblState.Text = lblState.Text + "," + chkSport3.Text; } } } }
运行效果: