急！！！在GridVidw中应用CheckBox实现点菜

   for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                CheckBox cb = (checkbox)GridView.Rows[i].Cell[0].FindControl("CheckboxID");//这里是checkbox的ID
                if (cb.Checked == true)
                {
                    //取出点菜的ID 存入数组
                }
                else
                {
                    //不做任何操作
                }
            }
            //把数组取出执行操作~

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;public partial class Default4 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {    }
    protected void Button1_Click(object sender, EventArgs e)
    {    }
}
敢问如何在这段代码中写？

  for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                CheckBox cb = (checkbox)GridView.Rows[i].Cell[0].FindControl("CheckboxID");//这里是checkbox的ID
                if (cb.Checked == true)
                {
                    //取出点菜的ID 存入数组
                }
                else
                {
                    //不做任何操作
                }
            }
循环出来

checkbox改成CheckBox

前半部分的给你一个参考：
http://www.cnblogs.com/chenping-987123/archive/2010/12/06/1897796.html

后面的GridView是什么一回事呢？

呵呵，我公司有这样的，但是方法比较复杂
对dataGrid进行了继承重写吧...我还菜鸟，看不太懂

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script src="JS/jquery-1.3.2-vsdoc2.js" type="text/javascript"></script><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">    <script type="text/javascript">
        function checkJs(IsCheck) {
            if (IsCheck) {
                $("#gv_info tr:gt(0)").css("background", "blue");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", true);
                })
            } else {
                $("#gv_info tr").css("background", "");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", false);
                })
            }
        }        $(function() {
            var flag = 0;
            $("#gv_info tr:gt(0)").click(function() {
                flag = 0;
                if ($(this).css("background") == "blue") {
                    $(this).css("background", "");
                    $(this).find(":checkbox").attr("checked", false);
                } else {
                    $(this).css("background", "blue");
                    $(this).find(":checkbox").attr("checked", true);
                }
                $("#gv_info tr:gt(0)").each(function() {
                    if ($(this).css("background") != "blue") {
                        flag = flag + 1;
                    }
                })
                if (flag == 0) {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", true);
                } else {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", false);
                }
            })

        })






    </script>    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="div" align="center">
        <asp:GridView ID="gv_info" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField>
                    <HeaderTemplate>
                        <input type='checkbox' id='chkAll' name='chkAll' onclick='checkJs(this.checked);' />
                    </HeaderTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="60px" />
                    <ItemTemplate>
                        <input type="checkbox" id="chkSelect" name="chkSelect" value='<%# Eval("Col")  %>' />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="id">
                    <ItemTemplate>
                        <asp:Label ID="Label1" Text='<% #Eval("Col") %>' runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="name">
                    <ItemTemplate>
                        <asp:Label ID="Label2" Text='<% #Eval("PID") %>' runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </div>
    </form>
</body>
</html> protected void Page_Load(object sender, EventArgs e)
    {
        string constring = "Data Source=.;Initial Catalog=Test;User ID=sa;Password=";
        SqlConnection con = new SqlConnection(constring);
        string selectstring="SELECT top 10 * FROM  tb";
        SqlDataAdapter sds = new SqlDataAdapter(selectstring, con);
        DataSet ds = new DataSet();
        sds.Fill(ds);
        gv_info.DataSource = ds.Tables[0];
        gv_info.DataBind();
    }好久没用girdview 正好没事干，最近也在学JQ。写个玩下.取值方法在each里处理下. 放到隐藏控件应该能实现你的功能

干脆直接编个.cs发上来算了，没学过JavaScript,看得眼都花了

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script src="JS/jquery-1.3.2-vsdoc2.js" type="text/javascript"></script><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">    <script type="text/javascript">
        var allID = "";
        function checkJs(IsCheck) {
            allID = ""
            if (IsCheck) {
                $("#gv_info tr:gt(0)").css("background", "blue");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", true);
                    allID += $(this).find(":checkbox").val()+",";
                })
            } else {
                $("#gv_info tr").css("background", "");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", false);
                    allID = "";
                })
                $("#hdID").val(allID);
            }

        }        $(function() {
            var flag = 0;
            $("#gv_info tr:gt(0)").click(function() {
                flag = 0;
                var thirdRe = "";
                thirdRe = $(this).find(":checkbox").val() + ",";
                alert(thirdRe);
                if ($(this).css("background") == "blue") {
                    $(this).css("background", "");
                    $(this).find(":checkbox").attr("checked", false);                    allID = allID.replace(thirdRe, '');
                } else {
                    $(this).css("background", "blue");
                    $(this).find(":checkbox").attr("checked", true);
                    allID += thirdRe;
                }
                $("#gv_info tr:gt(0)").each(function() {
                    if ($(this).css("background") != "blue") {
                        flag = flag + 1;
                    }
                })
                if (flag == 0) {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", true);
                } else {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", false);
                }
                $("#hdID").val(allID);
            })        })






    </script>    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="div" align="center">
        <asp:HiddenField ID="hdID" runat="Server" />
        <asp:GridView ID="gv_info" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField>
                    <HeaderTemplate>
                        <input type='checkbox' id='chkAll' name='chkAll' onclick='checkJs(this.checked);' />
                    </HeaderTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="60px" />
                    <ItemTemplate>
                        <input type="checkbox" id="chkSelect" name="chkSelect" value='<%# Eval("Col")  %>' />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="id">
                    <ItemTemplate>
                        <asp:Label ID="Label1" Text='<% #Eval("Col") %>' runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="name">
                    <ItemTemplate>
                        <asp:Label ID="Label2" Text='<% #Eval("PID") %>' runat="server"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
        <br />
    </div>
    </form>
</body>
</html>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string constring = "Data Source=.;Initial Catalog=Test;User ID=sa;Password=";
        SqlConnection con = new SqlConnection(constring);
        string selectstring="SELECT top 10 * FROM  tb";
        SqlDataAdapter sds = new SqlDataAdapter(selectstring, con);
        DataSet ds = new DataSet();
        sds.Fill(ds);
        gv_info.DataSource = ds.Tables[0];
        gv_info.DataBind();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string a = hdID.Value;
    }
}
string a 就是所有菜的 ID ，以" , " 隔开的形式存进去的，在后台用split(',') 处理下，循环就可以了。

实例：GridView实现CheckBox的多选或单选，并根据所选择的行进行数据操作

问下：那个 gv_info是什么意思啊？怎么在那儿报错了

<asp:GridView ID="gv_info" runat="server" AutoGenerateColumns="False">
GridView 的ID

直接复制页面名称是 caicai前台页面:
caicai.aspx<%@ Page Language="C#" AutoEventWireup="true" CodeFile="caicai.aspx.cs" Inherits="Default2" %><!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>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:BoundField HeaderText="菜号"  DataField="菜号"/>
                <asp:BoundField HeaderText="菜名" DataField="菜名"/>
                <asp:BoundField HeaderText="菜价" DataField="菜价"/>
                <asp:TemplateField HeaderText="选择">
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>

        </asp:GridView>
        <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
        <br />
        您选的菜是:<br />
        <asp:Label ID="Label1" runat="server"></asp:Label>
        <br />
   总价是:<asp:Label ID="Label2" runat="server"></asp:Label>
    </div>
    </form>
</body>
</html>
后台页面
caicai.aspx.csusing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Collections;public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GridView1.DataSource = CreateDataSource();
            GridView1.DataBind();
        }

    }
    ICollection CreateDataSource()
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("菜号", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("菜名", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("菜价", typeof(System.Decimal)));        for (int i = 0; i < 5; i++)
        {
            System.Random rd = new System.Random(Environment.TickCount * i); ;
            dr = dt.NewRow();
            dr[0] = "H" + i.ToString();
            dr[1] = "土豆丝" + i.ToString();
            dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
            dt.Rows.Add(dr);
        }
        System.Data.DataView dv = new System.Data.DataView(dt);
        return dv;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Double cj = 0.00;
        Label1.Text = "";

        for (int i = 0; i < GridView1.Rows.Count; i++)
        {
            CheckBox cb = (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox1");
            if (cb.Checked == true)
            {
                //取出点菜的ID 存入数组
                Label1.Text += "   " + GridView1.Rows[i].Cells[1].Text+"<br/>";
                cj += Convert.ToDouble(GridView1.Rows[i].Cells[2].Text);
            }
            else
            {
                //不做任何操作
            }        }
        Label2.Text = cj.ToString();
    }
}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default5.aspx.cs" Inherits="Default5" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script src="JS/jquery-1.3.2-vsdoc2.js" type="text/javascript"></script><html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">    <script type="text/javascript">
        var allID = "";
        function checkJs(IsCheck) {
            allID = ""
            if (IsCheck) {
                $("#gv_info tr:gt(0)").css("background", "blue");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", true);
                    allID += $(this).find(":checkbox").val()+",";
                })
            } else {
                $("#gv_info tr").css("background", "");
                $("#gv_info tr:gt(0)").each(function() {
                    $(this).find(":checkbox").attr("checked", false);
                    allID = "";
                })
                $("#hdID").val(allID);
            }

        }        $(function() {
            var flag = 0;
            $("#gv_info tr:gt(0)").click(function() {
                flag = 0;
                var thirdRe = "";
                thirdRe = $(this).find(":checkbox").val() + ",";
                alert(thirdRe);
                if ($(this).css("background") == "blue") {
                    $(this).css("background", "");
                    $(this).find(":checkbox").attr("checked", false);                    allID = allID.replace(thirdRe, '');
                } else {
                    $(this).css("background", "blue");
                    $(this).find(":checkbox").attr("checked", true);
                    allID += thirdRe;
                }
                $("#gv_info tr:gt(0)").each(function() {
                    if ($(this).css("background") != "blue") {
                        flag = flag + 1;
                    }
                })
                if (flag == 0) {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", true);
                } else {
                    $("#gv_info tr:eq(0)").find(":checkbox").attr("checked", false);
                }
                $("#hdID").val(allID);
            })        })






    </script>    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div id="div" align="center">
        <asp:HiddenField ID="hdID" runat="Server" onvaluechanged="hdID_ValueChanged" />
        <asp:GridView ID="gv_info" runat="server" AutoGenerateColumns="False"
            AllowPaging="True" AllowSorting="True" DataKeyNames="菜号"
            DataSourceID="SqlDataSource1">
            <Columns>
                <asp:BoundField DataField="菜号" HeaderText="菜号" ReadOnly="True"
                    SortExpression="菜号" />
                <asp:BoundField DataField="菜名" HeaderText="菜名" SortExpression="菜名" />
                <asp:BoundField DataField="菜价" HeaderText="菜价" SortExpression="菜价" />
                <asp:CheckBoxField DataField="bool" HeaderText="xuanze" SortExpression="bool" />
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
            ConnectionString="<%$ ConnectionStrings:点菜系统ConnectionString %>"
            DeleteCommand="DELETE FROM [菜单] WHERE [菜号] = @菜号"
            InsertCommand="INSERT INTO [菜单] ([菜号], [菜名], [菜价]) VALUES (@菜号, @菜名, @菜价)"
            SelectCommand="SELECT * FROM [菜单]"
            UpdateCommand="UPDATE [菜单] SET [菜名] = @菜名, [菜价] = @菜价 WHERE [菜号] = @菜号">
            <DeleteParameters>
                <asp:Parameter Name="菜号" Type="String" />
            </DeleteParameters>
            <UpdateParameters>
                <asp:Parameter Name="菜名" Type="String" />
                <asp:Parameter Name="菜价" Type="Decimal" />
                <asp:Parameter Name="菜号" Type="String" />
            </UpdateParameters>
            <InsertParameters>
                <asp:Parameter Name="菜号" Type="String" />
                <asp:Parameter Name="菜名" Type="String" />
                <asp:Parameter Name="菜价" Type="Decimal" />
            </InsertParameters>
        </asp:SqlDataSource>
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
        <br />
    </div>
    </form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;public partial class Default5 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //string constring = "Data Source=.;Initial Catalog=Test;User ID=sa;Password=";
        string str = ConfigurationManager.ConnectionStrings["点菜系统ConnectionString"].ConnectionString;
        SqlConnection con = new SqlConnection(str);
        string selectstring = "SELECT  * FROM  菜单";
        SqlDataAdapter sds = new SqlDataAdapter(selectstring, con);
        DataSet ds = new DataSet();
        sds.Fill(ds);
        gv_info.DataSource = ds.Tables[0];
        gv_info.DataBind();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string a = hdID.Value;
    }
    protected void hdID_ValueChanged(object sender, EventArgs e)
    {    }
}

看后台代码     protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            GridView1.DataSource = CreateDataSource();//这里写你的数据源,即从数据库读出来的数据
            GridView1.DataBind();
        }

    }
   //这个方法只是为了虚拟一个数据源,如果你连接数据库可以把这个方法删了,然后把上边的红色部分换成你的数据源
    ICollection CreateDataSource()
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("菜号", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("菜名", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("菜价", typeof(System.Decimal)));        for (int i = 0; i < 5; i++)
        {
            System.Random rd = new System.Random(Environment.TickCount * i); ;
            dr = dt.NewRow();
            dr[0] = "H" + i.ToString();
            dr[1] = "土豆丝" + i.ToString();
            dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
            dt.Rows.Add(dr);
        }
        System.Data.DataView dv = new System.Data.DataView(dt);
        return dv;
    }

调试易

急！！！在GridVidw中应用CheckBox实现点菜

解决方案 »