Gridview使用CheckBox全选与单选

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  • Post category:其他


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:




Couplets.cs

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。




View Code

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。




View Code

 <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。




View Code

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:




View Code

<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>