CRUD Operations in GridView Using ASP.Net

Nilesh Jadav
9y
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Article

Previously I wrote this same article but with 3 tiers. That was a long process, but here we will not use 3 tiers and instead put alll the code in a single .cs file.

Initial chamber

Step 1

Open your Visual Studio 2010 and create an empty website. Name it gridview_demo.

Step 2

In Solution Explorer you will see your empty website, add a web form and a SQL Server database as in the following.

For Web Form:

gridview_demo (your empty website) then right-click then select Add New Item -> Web Form. Name it gridview_demo.aspx.

For SQL Server Database

gridview_demo (your empty website) then right-click then select Add New Item -> SQL Server Database. Add the database inside the App_Data_folder.

DATABASE CHAMBER

Step 3

In Server Explorer, click on your database (Database.mdf) then select Tables -> Add New Table. Make the table like this.

Go to your database (Database.mdf) and create a table tbl_Data. Go to the database.mdf, then Table and Add New table. Design your table like the following:

Table tbl_data (don't forget to make ID as IS Identity -- True)

table design

I included a Stored Procedure for the update operation, so if someone wants to know how to make it using a Stored Procedure then they can learn from here.

Sp_updatedata - Database.mdf, the go to Stored Procedure and Add New Stored Procedure.

Add New Store Procedure

Design chamber

Step 4

Now open your gridview_demo.aspx file, where we create our design for binding and performing create, edit, delete and update operations.

Gridview_demo.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.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>
<style type="text/css">
.style1
{
text-decoration: underline;
color: #0000FF;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<table style="width:100%;">
<tr>
<td class="style1">
<strong>Edit Update Delete Operation in Gridview</strong></td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px"
CellPadding="3" DataKeyNames="id" AutoGenerateDeleteButton="True"
AutoGenerateEditButton="True" onrowcancelingedit="GridView1_RowCancelingEdit"
onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing"
onrowupdating="GridView1_RowUpdating" CellSpacing="2">
<Columns>
<asp:TemplateField HeaderText="Name">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("name") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="City">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("city") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("city") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FFF1D4" />
<SortedAscendingHeaderStyle BackColor="#B95C30" />
<SortedDescendingCellStyle BackColor="#F1E5CE" />
<SortedDescendingHeaderStyle BackColor="#93451F" />
</asp:GridView>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
<div>
</div>
</form>
</body>
</html>

Your design will look like the following:

Design

You need to look around this Property in GridView:

DataKeysName: id
Auto Generate Delete Button: True
Auto Generate Edit Button : True

In events (double-click each event shown below to go to the code):

Row Canceling Edit
Row Deleting
Row Editing
Row Updating

Code chamber

Step 5

Open your gridview_demo.aspx.cs and write some code so that our application works.

Gridview_demo.cs

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)
{
if (!Page.IsPostBack)
{
refreshdata();
}
}
public void refreshdata()
{
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");
SqlCommand cmd = new SqlCommand("select * from tbl_data", con);
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");
int id = Convert.ToInt16(GridView1.DataKeys[e.RowIndex].Values["id"].ToString());
con.Open();
SqlCommand cmd = new SqlCommand("delete from tbl_data where id =@id", con);
cmd.Parameters.AddWithValue("id", id);
int i = cmd.ExecuteNonQuery();
con.Close();
refreshdata();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
refreshdata();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
refreshdata();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");
TextBox txtname = GridView1.Rows[e.RowIndex].FindControl("TextBox1") as TextBox;
TextBox txtcity = GridView1.Rows[e.RowIndex].FindControl("TextBox2") as TextBox;
int id = Convert.ToInt16(GridView1.DataKeys[e.RowIndex].Values["id"].ToString());
con.Open();
SqlCommand cmd = new SqlCommand("sp_updatedata", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("name", txtname.Text);
cmd.Parameters.AddWithValue("city", txtcity.Text);
cmd.Parameters.AddWithValue("id", id);
int i = cmd.ExecuteNonQuery();
con.Close();
GridView1.EditIndex = -1;
refreshdata();
}
}