如何在GridView中添加CheckBox控件列,添加删除确认对话框

using  System;
using  System.Data;
using  System.Configuration;
using  System.Collections;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Web.UI.HtmlControls;
using  System.Data.SqlClient;

public   partial   class  GridViewCheckBox : System.Web.UI.Page
... {
    protected void Page_Load(object sender, EventArgs e)
    ...{
        if (!IsPostBack)
            GridViewDataBind();
    }

    private void GridViewDataBind()
    ...{
        string connStr = ConfigurationManager.ConnectionStrings["northwind"].ConnectionString;
        SqlConnection conn = new SqlConnection(connStr);
        SqlDataAdapter da = new SqlDataAdapter("select firstname, lastname, city from employees", conn);
        conn.Open();
        DataSet ds = new DataSet();
        try
        ...{
            da.Fill(ds, "testTable");
            dgCheckBox.DataSource = ds.Tables["testTable"].DefaultView;
            dgCheckBox.DataBind();
        }
        catch (Exception error)
        ...{
            Response.Write(error.ToString());
        }
        finally 
        ...{
            conn.Close();
        }
    }
    protected void cmdSelectAll_Click(object sender, EventArgs e)
    ...{
        System.Web.UI.WebControls.CheckBox chkEport;
        if (cmdSelectAll.Text == "全选")
        ...{
            foreach (GridViewRow gridviewrow in dgCheckBox.Rows)
            ...{
                chkEport = (CheckBox)gridviewrow.FindControl("chkEport");
                chkEport.Checked = true;
            }
            cmdSelectAll.Text = "取消";
        }
        else
        ...{
            foreach (GridViewRow gridviewrow in dgCheckBox.Rows)
            ...{
                chkEport = (CheckBox)gridviewrow.FindControl("chkEport");
                chkEport.Checked = false;
            }
            cmdSelectAll.Text = "全选";
        }
    }
    protected void cmdFindSelected_Click(object sender, EventArgs e)
    ...{
        System.Web.UI.WebControls.CheckBox chkEport;
        string strID;
        System.Text.StringBuilder strMsg = new System.Text.StringBuilder("选中项的City字段值分别为：<hr color=red>");
        foreach (GridViewRow gridviewrow in dgCheckBox.Rows)
        ...{
            chkEport = (CheckBox)gridviewrow.FindControl("chkEport");
            if (chkEport.Checked)
            ...{
                strID = ((Label)(gridviewrow.FindControl("lblCity"))).Text;
                strMsg.Append(strID + "<br><hr color=red>");
            }
            message.Text = strMsg.ToString();
        }
    }
    protected void dgCheckBox_RowCreated(object sender, GridViewRowEventArgs e)
    ...{
        if (e.Row.RowType == DataControlRowType.DataRow)
        ...{
            TableCell myCell;
            myCell = e.Row.Cells[4];
            LinkButton btnDel = (LinkButton)myCell.Controls[0];
            btnDel.Attributes.Add("onclick", "return confirm('您真的要删除此行吗？');");
            btnDel.Text = "删除";
        }
    }
    protected void dgCheckBox_RowDeleting(object sender, GridViewDeleteEventArgs e)
    ...{
        Response.Write("删除");
    }
}

GridViewCheckBox.aspx如下:

         < table style = " width: 566px " >
             < tr >
                 < td style = " width: 112px "   >
                     < asp:GridView ID = " dgCheckBox "  runat = " server "  GridLines = " vertical "  AutoGenerateColumns = " false "  PagerSettings - Mode = " numeric "  Width = " 326px "  OnRowCreated = " dgCheckBox_RowCreated "   OnRowDeleting = " dgCheckBox_RowDeleting " >
                     < SelectedRowStyle Font - Bold = " True "  ForeColor = " White "  BackColor = " #008A8C " />
                     < AlternatingRowStyle BackColor = " AppWorkspace " />
                     < RowStyle ForeColor = " ActiveBorder "  BackColor = " ActiveCaption "   />
                     < HeaderStyle Font - Bold = " True "  ForeColor = " ActiveCaptionText "  BackColor = " AliceBlue "   />
                     < FooterStyle ForeColor = " AppWorkspace "  BackColor = " Aqua "   />
                     < Columns >
                     < asp:TemplateField >
                     < ItemTemplate >
                     < asp:CheckBox ID = " chkEport "  runat = " server "   />
                     </ ItemTemplate >
                     < EditItemTemplate >
                     < asp:CheckBox ID = " chkEportON "  runat = " server "   />
                     </ EditItemTemplate >
                     </ asp:TemplateField >
                     < asp:BoundField DataField = " lastname "  HeaderText = " lastname " />
                     < asp:BoundField DataField = " firstname "  HeaderText = " firstname "   />
                     < asp:TemplateField >
                     < ItemTemplate >
                     < asp:Label ID = " lblCity "  runat = " server "  Text = ' <%#Eval("city") %> ' ></ asp:Label >
                     </ ItemTemplate >
                     </ asp:TemplateField >
                     < asp:ButtonField Text = " 删除 "  CommandName = " delete " />
                     </ Columns >
                     < PagerStyle HorizontalAlign = " Center "  ForeColor = " Aquamarine "  BackColor = " Azure " />
                     </ asp:GridView >
                 </ td >
             </ tr >
             < tr >
             < td style = " width: 112px " >
             < asp:Button ID = " cmdSelectAll "  runat = " server "  Text = " 全选 "  OnClick = " cmdSelectAll_Click "   />& nbsp; < asp:Button ID = " cmdFindSelected "  runat = " server "  Text = " 取得选择的项 "  OnClick = " cmdFindSelected_Click "   />
             </ td >
             </ tr >< tr >
             < td >< asp:Label ID = " message "  runat = " server " ></ asp:Label ></ td >
             </ tr >
         </ table >