Insus.NET对Gridview使用CheckBox单选与全选功能再次进行简单演示,选中的行,使用高亮显示,让用户一目了然看到哪一行被选择了。本例中,使用前端脚本Javascript来实现。还是先看看Insus.NET做出来的效果:
Insus.NET原本是从数据库获取数据并绑定至GridView控件的,为了在学asp.net的网友,也能轻易操作,因此这个想法,采用对象存储数据。
首先创建一个对象,[对联]的对象:
using System;using System.Collections.Generic;using System.Linq;using System.Web;/// <summary>/// Summary description for Couplets/// </summary>namespace Insus.NET{ public class Couplets { private int _ID; private string _Type; private string _Content; public int ID { get { return _ID; } set { _ID = value; } } public string Type { get { return _Type; } set { _Type = value; } } public string Content { get { return _Content; } set { _Content = value; } } public Couplets() { // // TODO: Add constructor logic here // } public Couplets(int id, string type, string content) { this._ID = id; this._Type = type; this._Content = content; } }}
对象准备好,它是的空的对象,所以还得为刚才创建好的对象,填充数据,让它成为真正的实体。
public List<Couplets> GetData() { List<Couplets> couplets = new List<Couplets>(); Couplets c = new Couplets(1, "四字联", "一元复始;万象更新。"); couplets.Add(c); c = new Couplets(2, "四字联", "风调雨顺;国盛人和。"); couplets.Add(c); c = new Couplets(3, "四字联", "风调雨顺;国盛人和。"); couplets.Add(c); c = new Couplets(4, "五字联", "金蛇含瑞草;紫燕报新春。"); couplets.Add(c); c = new Couplets(5, "五字联", "龙年留胜绩;蛇岁展宏猷。"); couplets.Add(c); c = new Couplets(6, "七字联", "壬辰传捷龙辞旧;癸巳报春蛇迎新。"); couplets.Add(c); c = new Couplets(7, "七字联", "山高水远人增志;蛇接龙年地满春。"); couplets.Add(c); c = new Couplets(8, "七字联", "小龙起舞神州地;祖国腾飞大治年。"); couplets.Add(c); c = new Couplets(9, "七字联", "金山水漫双蛇舞;绿野春归百鸟鸣。"); couplets.Add(c); return couplets; }
在Default.aspx网页上拉一个GridView控件。
<asp:GridView ID="GridViewCouplets" runat="server" AutoGenerateColumns="false"> <Columns> <asp:TemplateField> <HeaderTemplate> <asp:CheckBox ID="CheckBox1" runat="server" ToolTip="全选" onclick="SelectedAll(this);" /> </HeaderTemplate> <ItemTemplate> <asp:CheckBox ID="CheckBox2" runat="server" onclick="SelectedSingle(this);" /> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <HeaderTemplate> ID </HeaderTemplate> <ItemStyle HorizontalAlign="Right" /> <ItemTemplate> <%# Eval("ID") %> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <HeaderTemplate> Type </HeaderTemplate> <ItemTemplate> <%# Eval("Type") %> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <HeaderTemplate> Content </HeaderTemplate> <ItemTemplate> <%# Eval("Content") %> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView>
接下来,还得通过Default.aspx.cs页面为GridView绑定数据。
using System;using System.Collections.Generic;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.GridViewCouplets.DataSource = GetData(); this.GridViewCouplets.DataBind(); }}
在上面的html代码中,可以看有两个CheckBhox,一个是放在GridView的HeaderTemplate模版上为了全选,另一个是放在ItemTemplate模版上为了单选。
每一个CheckBox都有一个OnClick事件,可参考如下Javascript代码:
<script type="text/javascript"> function SelectedAll(cb) { cb.checked = cb.checked ? false : true; var gv = document.getElementById('<%=GridViewCouplets.ClientID %>'); var rc = gv.rows.length; for (var i = 1; i < rc; i++) { var input = gv.rows[i].cells[0].getElementsByTagName("input"); if (input[0].type == "checkbox" && input[0].checked) { input[0].checked = false; gv.rows[i].style.backgroundColor = ""; } else { input[0].checked = true; gv.rows[i].style.backgroundColor = "#66ff33;"; } } } function SelectedSingle(cb) { var row = cb.parentNode.parentNode; if (cb.checked) { row.style.backgroundColor = "#66ff33;"; } else { row.style.backgroundColor = ""; } } </script>