If you want to delete multiple rows from GridView in ASP.NET. Follow some for this task.
Step-1: Take a GridView Control and one Button control onto the Design window.
Step-2 : Set AutoGenerated column property is to false.
Step-3 : Make some columns like
<Columns>
<asp:TemplateField HeaderText ="Action">
<ItemTemplate >
<asp:CheckBox ID="Chkdelete" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Id" Visible =false>
<ItemTemplate >
<asp:Label ID="snolbl" runat="server" Text='<%# Eval("sno") %>' />
</ItemTemplate>
</asp:TemplateField>
similarly bind all column onto label control.
Here is the first template field take a one checkbox control and antother field take one label control.
Step-4: Bind GridView on Page_Load() event
Step-5: Find checkbox control from GridView Rows also find Unique table column (sno).
Step-6 : Perform Delete operation
Lets take a simple example
Output
Step-1: Take a GridView Control and one Button control onto the Design window.
Step-2 : Set AutoGenerated column property is to false.
Step-3 : Make some columns like
<Columns>
<asp:TemplateField HeaderText ="Action">
<ItemTemplate >
<asp:CheckBox ID="Chkdelete" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Id" Visible =false>
<ItemTemplate >
<asp:Label ID="snolbl" runat="server" Text='<%# Eval("sno") %>' />
</ItemTemplate>
</asp:TemplateField>
similarly bind all column onto label control.
Here is the first template field take a one checkbox control and antother field take one label control.
Step-4: Bind GridView on Page_Load() event
Step-5: Find checkbox control from GridView Rows also find Unique table column (sno).
Step-6 : Perform Delete operation
Lets take a simple example
<%@ PageLanguage="C#"AutoEventWireup="true"CodeFile="deleteItem.aspx.cs"Inherits="deleteItem"%>
<!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:TemplateField HeaderText ="Action">
<ItemTemplate >
<asp:CheckBox ID="Chkdelete"runat="server"/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Id"Visible =false>
<ItemTemplate >
<asp:Label ID="snolbl" runat="server"Text='<%# Eval("sno") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Name">
<ItemTemplate >
<asp:Label ID="namelbl"runat="server"Text='<%# Eval("Name") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Address">
<ItemTemplate >
<asp:Label ID="addlbl" runat="server"Text='<%# Eval("Name") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<br />
<asp:Button ID="Button1"runat="server"onclick="Button1_Click"
Text="Delete Multiple rows" />
</div>
</form>
</body>
</html>
Codebehid Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
public partial class deleteItem : System.Web.UI.Page
{
SqlConnection con = newSqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ToString());
protected voidPage_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
loadgrid();
}
}
private voidloadgrid()
{
SqlCommand cmd = newSqlCommand("Select * from deltable",con);
con.Open();
SqlDataReader rd = cmd.ExecuteReader();
GridView1.DataSource = rd;
GridView1.DataBind();
con.Close();
}
protected voidButton1_Click(object sender, EventArgs e)
{
foreach (GridViewRow row inGridView1 .Rows)
{
var check = row.FindControl("Chkdelete") as CheckBox;
if (check .Checked)
{
var id = row.FindControl("snolbl") asLabel;
SqlCommand cmd = new SqlCommand("delete from deltable where sno=@s", con);
cmd.Parameters.AddWithValue("@s", id.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
}
loadgrid();
}
}
Output
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