Most of the time our website display thousands of data in Gridview in ASP.net.Ususally admin can view the registered users on the website, but when an admin want to edit or delete any fraud or duplicate or damaged data from the table a method in Gridview Edit, Delete and update is available.
Source Code :
<%@ 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 id="Head1" runat="server">
<title>Untitled Page</title>
<style type="text/css">
.Gridview
{
font-family:Verdana;
font-size:10pt;
font-weight:normal;
color:black;
}
</style>
<script type="text/javascript">
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" DataKeyNames="id"OnPageIndexChanging="GridView1_PageIndexChanging" OnRowCancelingEdit="GridView1_RowCancelingEdit"OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"OnRowUpdating="GridView1_RowUpdating">
<Columns>
<asp:BoundField DataField="id" HeaderText="S.No." />
<asp:BoundField DataField="name" HeaderText="Name" />
<asp:BoundField DataField="address" HeaderText="address" />
<asp:BoundField DataField="country" HeaderText="Country" />
<asp:CommandField ShowEditButton="true" />
<asp:CommandField ShowDeleteButton="true" />
</Columns>
</asp:GridView>
</div>
<div>
<asp:Label ID="lblresult" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
Design:
The design part ll look like the below image :
Code behind :
using System;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default : System.Web.UI.Page
{
private SqlConnection conn = new SqlConnection("Data Source=NEHASHAMA;Integrated Security=true;Initial Catalog=rp");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
gvbind();
}
}
protected void gvbind()
{
conn.Open();
SqlCommand cmd = new SqlCommand("Select * from detail", conn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
conn.Close();
if (ds.Tables[0].Rows.Count > 0)
{
GridView1.DataSource = ds;
GridView1.DataBind();
}
else
{
ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
GridView1.DataSource = ds;
GridView1.DataBind();
int columncount = GridView1.Rows[0].Cells.Count;
GridView1.Rows[0].Cells.Clear();
GridView1.Rows[0].Cells.Add(new TableCell());
GridView1.Rows[0].Cells[0].ColumnSpan = columncount;
GridView1.Rows[0].Cells[0].Text = "No Records Found";
}
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex];
Label lbldeleteid = (Label)row.FindControl("lblID");
conn.Open();
SqlCommand cmd = new SqlCommand("delete FROM detail where id='"+Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString())+"'", conn);
cmd.ExecuteNonQuery();
conn.Close();
gvbind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
gvbind();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int userid = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString());
GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex];
Label lblID = (Label)row.FindControl("lblID");
//TextBox txtname=(TextBox)gr.cell[].control[];
TextBox textName = (TextBox)row.Cells[0].Controls[0];
TextBox textadd = (TextBox)row.Cells[1].Controls[0];
TextBox textc = (TextBox)row.Cells[2].Controls[0];
//TextBox textadd = (TextBox)row.FindControl("txtadd");
//TextBox textc = (TextBox)row.FindControl("txtc");
GridView1.EditIndex = -1;
conn.Open();
//SqlCommand cmd = new SqlCommand("SELECT * FROM detail", conn);
SqlCommand cmd = new SqlCommand("update detail set name='"+textName.Text+"',address='"+textadd.Text+"',country='"+textc.Text+"'where id='"+userid+"'",conn);
cmd.ExecuteNonQuery();
conn.Close();
gvbind();
//GridView1.DataBind();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
gvbind();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
gvbind();
}
}
Save all or press ctrl+S and hit F5 to run the page,the page ll look like below image :
Click on Edit the GridView it ll display Textboxes in each cell like below image :
Edit the value here and click on Update link, it ll update whole data or want to remove click on delete link above image shown.
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