Hi
You can do this like.
step1. Include the checkbox field in header of Gridview and write the JavaScript code to select the multiple rows of Gridview like this
<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Default.aspx.cs” Inherits=”_Default” %>
<!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><script type = “text/javascript”>
function checkAll(objRef)
{var GridView = objRef.parentNode.parentNode.parentNode;
var inputList = GridView.getElementsByTagName(“input”);
for (var i = 0; i < inputList.length; i++)
{//Get the Cell To find out ColumnIndex
var row = inputList[i].parentNode.parentNode;
if (inputList[i].type == “checkbox” && objRef != inputList[i])
{if (objRef.checked)
{row.style.backgroundColor = “Silver”;
inputList[i].checked = true;}
else
{
inputList[i].checked = false;
row.style.backgroundColor = “white”;}
}
}
}
</script>
</head>
<body>
<form id=”form1″ runat=”server”><div style=”margin-left:200px;”>
<asp:GridView ID=”GridView1″ runat=”server”
AutoGenerateColumns=”False”>
<Columns>
<asp:TemplateField HeaderText=”Select”><HeaderTemplate>
<asp:CheckBox ID=”chkAll” runat=”server”
onclick = “checkAll(this);” />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID=”chkBox1″ runat=”server” />
<asp:Label ID=”lblId” runat=”server” Text='<%# Eval(“Id”) %>’ Visible=”false” /></ItemTemplate>
</asp:TemplateField><asp:TemplateField HeaderText=”SI.No”>
<ItemTemplate>
<%#Container.DataItemIndex+1 %>
</ItemTemplate>
</asp:TemplateField><asp:BoundField HeaderText=”EmpName” DataField=”EmpName” />
<asp:BoundField HeaderText=”EmpSal” DataField=”EmpSal” />
</Columns></asp:GridView>
<asp:Button ID=”BtnDelete” runat=”server” Text=”Delete”
CausesValidation=”false” OnClientClick=”return confirm(‘Are you sure?’)”
onclick=”BtnDelete_Click” /></div>
</form>
</body>
</html>
Step2: Write the code for checking selected row of gridview and take the Id of that row.
if check box checked is true then delete that row of gridview
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 _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
FillGrid();
}}
protected void FillGrid()
{
using (SqlConnection con = new SqlConnection(“Data Source=.;Initial Catalog=Test;Integrated Security=True”))
{
using (SqlCommand cmd = new SqlCommand(“Select top 10 *from tblEmp”, con))
{
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
}
protected void BtnDelete_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox cb = (CheckBox)row.FindControl(“chkBox1”);
Label lbl=(Label)row.FindControl(“lblId”);
string uid =lbl.Text ;
if (cb.Checked)
{
using( SqlConnection con = new SqlConnection(“Data Source=.;Initial Catalog=Test;Integrated Security=True”))
{using (SqlCommand cmd = new SqlCommand(“Delete from tblEmp where Id=@Id”, con))
{cmd.Parameters.AddWithValue(“@Id”, uid);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
FillGrid();
}}
}
}
}
}
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