開發要求，原本對CheckBoxList控件是用來讓用戶多選的。但現在特殊要求，這個CheckBoxList控件限制只能單選。
哈哈，看看Insus.NET做出來的效果：
為了你也能實現出來，可以參考下面的方法，第一是准備好一個對象“地支”（Terrestrial Branch）
TerrestrialBranch.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; /// <summary> /// Summary description for TerrestrialBranch /// </summary> namespace Insus.NET { public class TerrestrialBranch { private int _ID; private string _Name; public int ID { get{return _ID;} set { _ID = value; } } public string Name { get { return _Name; } set { _Name = value; } } public TerrestrialBranch() { // // TODO: Add constructor logic here // } public TerrestrialBranch(int id, string name) { this.ID = id; this._Name = name; } } }
用數據填充這個對象，並用泛型List<t>來存儲這十二個對象：
View Code
private List<TerrestrialBranch> GetData() { List<TerrestrialBranch> tbs = new List<TerrestrialBranch>(); tbs.Add(new TerrestrialBranch(1,"子")); tbs.Add(new TerrestrialBranch(2, "丑")); tbs.Add(new TerrestrialBranch(3, "寅")); tbs.Add(new TerrestrialBranch(4, "卯")); tbs.Add(new TerrestrialBranch(5, "辰")); tbs.Add(new TerrestrialBranch(6, "巳")); tbs.Add(new TerrestrialBranch(7, "午")); tbs.Add(new TerrestrialBranch(8, "未")); tbs.Add(new TerrestrialBranch(9, "申")); tbs.Add(new TerrestrialBranch(10, "酉")); tbs.Add(new TerrestrialBranch(11, "戌")); tbs.Add(new TerrestrialBranch(12, "亥")); return tbs; }
在.aspx頁面拉一個CheckBoxList控件，設置兩個屬性RepeatColumns="6" RepeatDirection="Horizontal"
View Code
<asp:CheckBoxList ID="CheckBoxListTerrestrialBranch" runat="server" RepeatColumns="6" RepeatDirection="Horizontal"></asp:CheckBoxList>
把剛才准備好的List<TerrestrialBranch>綁定給這個CheckBoxList控件：
View Code
using System; using System.Collections.Generic; using System.Data; using System.Data.OleDb; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using Insus.NET; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) Data_Binding(); } private void Data_Binding() { this.CheckBoxListTerrestrialBranch.DataSource = GetData(); this.CheckBoxListTerrestrialBranch.DataTextField = "Name"; this.CheckBoxListTerrestrialBranch.DataValueField = "ID"; this.CheckBoxListTerrestrialBranch.DataBind(); } }
OK,一切准備就緒，可以寫Javascript腳本，放在<head>之內。
View Code
window.onload = function () { var cbl = document.getElementById('<%= CheckBoxListTerrestrialBranch.ClientID %>') var inputs = cbl.getElementsByTagName("input"); for (var i = 0; i < inputs.length; i++) { if (inputs[i].type == "checkbox") { inputs[i].onclick = function () { var cbs = inputs; for (var i = 0; i < cbs.length; i++) { if (cbs[i].type == "checkbox" && cbs[i] != this && this.checked) { cbs[i].checked = false; } } } } } }