在GripView中如何在每行前加CheckBox，求助!

Question

在VS2005平台上用C#，在新建设备资料网页中，需输入及选择数据，最后确定保存。有个GripView,如何在其中每行前加入CheckBox，最后按本网页确定键后，如何获得选中行的数据？可选中多行，请指教，谢谢！

Answer 1

借一个 隐藏的 input 来保存 主键：
<input type="hidden" id="SelectedID" runat="server" value='<%# DataBinder.Eval(Container.DataItem, "id")%>'/>
<asp:CheckBox ID="ChkPhoto" runat="server" />

Answer 2

随便搜了4个例子：http://www.cnblogs.com/eddie005/archive/2006/07/04/442837.aspx
http://blog.csdn.net/net_lover/archive/2006/10/25/1351234.aspx
http://www.dwww.cn/News/2007-7/2007726178115245.shtml
http://hugh-lin.cnblogs.com/archive/2005/08/10/211549.html自己学着google吧。

Answer 3

GridView加checkbox与DATAGRID加checkbox没什么区别
无非用个模板列，放个checkbox，再用一段JS脚本控制checkbox的值
提交的时候，再从gridview上获取checkbox，判断checkbox.checked的值就可以知道，哪条记录被选中了，思路基本上是这样。

Answer 4

建议继承GridView
以下代码添加一个模板列 包含一个checkbox
 protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            
                TemplateField field = this.Columns[0] as TemplateField;
                if (field == null || !(field.ItemTemplate is SelectField))
                {
                    this.Columns.Insert(0, SelectField.CreateSelectField("KeyValue"));
                }
 }
以下是SelectField.cs
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Data;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;namespace FFCS.BNet.Controls
{
    /// <summary>
    /// 选择域
    /// </summary>
    [ToolboxData("<{0}:SelectField runat=server></{0}:SelectField>")]
    public class SelectField : DataControlField, IBindableTemplate, ITemplate
    {
        private DataControlRowType templateType;
        private string columnName;
        private string _dataField;        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="colname">名称</param>
        /// <param name="dataField">数据域</param>
        public SelectField(DataControlRowType type, string colname, string dataField)
        {
            templateType = type;
            columnName = colname;
            _dataField = dataField;
        }        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="colname">名称</param>
        public SelectField(DataControlRowType type, string colname)
        {
            templateType = type;
            columnName = colname;
        }        /// <summary>
        /// 工厂 创建 SelectField
        /// </summary>
        /// <returns>DataControlField</returns>
        protected override DataControlField CreateField()
        {
            return new SelectField(DataControlRowType.DataRow, "");
        }        /// <summary>
        /// 数据绑定
        /// </summary>
        /// <param name="sender">发送者</param>
        /// <param name="e">事件参数</param>
        private void checkBox_DataBinding(object sender, EventArgs e)
        {            CloverCheckBox checkBox = (CloverCheckBox)sender;
            GridViewRow container = (GridViewRow)checkBox.NamingContainer;
            checkBox.Value = DataBinder.Eval(container.DataItem, _dataField).ToString();
        }        /// <summary>
        /// 工厂 创建SelectField
        /// </summary>
        /// <param name="dataField">数据域</param>
        /// <returns>TemplateField</returns>
        public static TemplateField CreateSelectField(string dataField)
        {
            TemplateField selectField = new TemplateField();
            selectField.ShowHeader = true;
            selectField.HeaderTemplate = new SelectField(DataControlRowType.Header, "<span style=\"cursor:hand\">全选</span>");
            selectField.ItemTemplate = new SelectField(DataControlRowType.DataRow, "", dataField);
            return selectField;
        }
        /// <summary>
        /// 排序集合
        /// </summary>
        /// <param name="container"></param>
        /// <returns></returns>
        public IOrderedDictionary ExtractValues(System.Web.UI.Control container)
        {
            return new CloverOrderedDictionary();        }
        /// <summary>
        /// 实例化控件
        /// </summary>
        /// <param name="container"></param>
        public void InstantiateIn(System.Web.UI.Control container)
        {
            switch (templateType)
            {
                case DataControlRowType.Header:
                    {
                        Label lc = new Label();
                        lc.Text = columnName;
                        lc.Attributes.Add("onclick", "javascript:return SelectGridViewField(document,this)");
                        container.Controls.Add(lc);
                        break;
                    }
                case DataControlRowType.DataRow:
                    {
                        CloverCheckBox checkBox = new CloverCheckBox();
                        //checkBox.ID = "SelectFieldCheckBox";
                        checkBox.Group = "SelectField";                        if (_dataField != null)
                        {
                            checkBox.DataBinding += new EventHandler(checkBox_DataBinding);
                        }
                        container.Controls.Add(checkBox);
                        break;
                    }
            }
        }
    }
}

Answer 5

按钮控件：
<asp:Button ID="BtnTrue" OnClick="BtnTrue_Click" runat="server" Text="确定" />
添加按钮事件：
protected void BtnTrue_Click(object sender, System.EventArgs e)
{
            foreach(GridDataItem   dt   in   this.DataGrid.Item)   
            {
                ChkSelect = (CheckBox)dt.item.FindControl("ChkPhoto");
                if (ChkSelect.Checked)
                {
                   //你要的操作
                }
              }
           
 }

Answer 6

帖出我做的其中一个页面的gridView部分的html代码给你:<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderStyle="Ridge"
                                        BorderWidth="1px" CellPadding="5" GridLines="Horizontal" Width="100%">
                                        <Columns>
                                            <asp:TemplateField>
                                                <HeaderTemplate>
                                                    <input id="CheckAll" onclick="return select_deselectAll (this.checked, this.id)"
                                            tabindex="0" type="checkbox">
                                                </HeaderTemplate>
                                                <ItemTemplate>
                                                    <input id="checkid" name="checkid" type="checkbox" value='<%# DataBinder.Eval(Container, "DataItem.b1_01") %>'>
                                                </ItemTemplate>
                                            </asp:TemplateField>
                                            <asp:BoundField DataField="b1_01" HeaderText="ID" />
                                            <asp:HyperLinkField DataNavigateUrlFields="b1_01" DataNavigateUrlFormatString="admBBS2.aspx?b1Id={0}"
                                                DataTextField="b1_02" HeaderText="區名稱" />
                                            <asp:HyperLinkField DataNavigateUrlFields="b1_01" DataNavigateUrlFormatString="admBBS2.aspx?b1Id={0}"
                                                DataTextField="b1_03" HeaderText="區簡介" />
                                            <asp:BoundField DataField="b1_05" HeaderText="主題數" />
                                            <asp:BoundField DataField="b1_04" HeaderText="帖子數" />
                                        </Columns>
                                    </asp:GridView>
下面是用到的javascript:
function select_deselectAll (chkVal, idVal) 
  {
   var frm = document.forms[0];
   for (i=0; i<frm.length; i++) 
   {
    if (idVal.indexOf ('CheckAll') != -1)
    {
     if(chkVal == true) 
     {
      frm.elements[i].checked = true;
     } 
     else 
     {
      frm.elements[i].checked = false;
     }
    } 
    else if (idVal.indexOf('DeleteThis') != -1) 
    {
     if(frm.elements[i].checked == false) 
     {
      frm.elements[1].checked = false;
     }
    }
   }
         }最后是例如我要删除选定的记录:
  delete from bbs1 where b1_01 in (" & Request.Form("checkid") & ")

Answer 7

你先回到起点，从“点击按钮就动态添加TextBox”这么简单的程序开始学正确正确的控制逻辑编写方法。你的程序太复杂了，不适合很快搞清楚基础知识。

Answer 8

前台：   <asp:GridView ID="gvInfo" runat="server" AutoGenerateColumns="False" Width="99%">
                            <Columns>
                                <asp:TemplateField HeaderText="选择">
                                    <HeaderTemplate>
                                        <input id="chkAll" onclick="javascript:SelectAllCheckboxes(this);" runat="server"
                                            type="checkbox" />
                                    </HeaderTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="chkSelect" runat="server" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="NumberID"　 >
                                    <ItemStyle ForeColor="White" />
                                </asp:BoundField>
                                <asp:BoundField DataField="EventSubject" HeaderText="活动主题" />
                                <asp:BoundField DataField="CustomerName" HeaderText="客户" />
                                <asp:BoundField DataField="ContactName" HeaderText="联系人" />
                                <asp:BoundField DataField="EventTypeName" HeaderText="活动类型" />
                                <asp:BoundField DataField="ActiveModeName" HeaderText="交流方式" />
                                <asp:BoundField DataField="EventMainStaffName" HeaderText="主负责人" /> 
                                <asp:BoundField DataField="EventStartDate" HeaderText="开始时间" />
                                <asp:BoundField DataField="EventEndDate" HeaderText="结束时间" />                                
                                <asp:BoundField DataField="EventBuildDate" HeaderText="建立时间" />      
                            </Columns>
                        </asp:GridView>   <script language="javascript">
        function SelectAllCheckboxes(spanChk)
        {
　        var oItem = spanChk.children;
　        var theBox=(spanChk.type=="checkbox")?spanChk:spanChk.children.item[0];
　        xState=theBox.checked;
　        elm=theBox.form.elements;
　        for(i=0;i<elm.length;i++)
　        if(elm[i].type=="checkbox" && elm[i].id!=theBox.id)
　        {
　　        if(elm[i].checked!=xState)
　　        elm[i].click();
　        }
        }
    </script>
后台：
    private void GetSelectRows(string status)
    {
        string numberID = "";
        string NumberIDList = "";        for (int i = 0; i < gvInfo.Rows.Count; i++)
        {
            GridViewRow row = gvInfo.Rows[i];
            bool isChecked = ((CheckBox)row.FindControl("chkSelect")).Checked;
            if (isChecked)
            {
                numberID = gvInfo.Rows[i].Cells[1].Text;
                NumberIDList += numberID + "|";
            }
        }        if (NumberIDList + "" == "")
        {
            JScript.Alert("请至少选择一行记录！");
            return;
        }        NumberIDList = NumberIDList.Remove(NumberIDList.Length - 1);
                 try
        {
            SaleEvent_Rule.ManagementAudingInformed(Staff_ID, NumberIDList, status+"");
            JScript.Alert("提交成功！");            ShowToScreen();           
        }
        catch (Exception ex)
        {
           
            JScript.Alert("提交出现错误！");
        }
    }

Answer 9

不过，自己要学着使用google ，不能这么依赖

Answer 10

添加一模板，并拖入一 CheckBox// .aspx
<asp:gridview id=GridView1 ...
<columns>
<asp:templatefield>
<itemtemplate>
<asp:checkbox id=CheckBox1 ...
...// .aspx.cs
... Button1_Click ...
{
    foreach(GridViewRow row in GridView1.Rows) {
        CheckBox chk = row.FindControl("CheckBox1") as CheckBox;
        if(chk != null && chk.Checked) { // 选中
             string str1 = row.Cell[1].Text;
             string str2 = row.Cell[2].Text;
             // ....
        }
    }
}