Introduction:
Here I will explain how to delete or remove row from gridview in asp.net using c# , vb.net with confirmation message or delete gridview rows with confirmation box in asp.net using c# , vb.net or delete row from gridview with button click in asp.net using c# , vb.net.
Description:
In previous articles I explained sql injection attacks prevention in asp.net, ExecuteReader example in asp.net, import data from excel to sql database in asp.net, export gridview data to excel in asp.net using c# , export gridview data to pdf in asp.net using c# and many articles relating to asp.net, c#,vb.net and jQuery. Now I will explain how to remove row from gridview in asp.net using c# , vb.net with confirmation message.
In previous articles I explained sql injection attacks prevention in asp.net, ExecuteReader example in asp.net, import data from excel to sql database in asp.net, export gridview data to excel in asp.net using c# , export gridview data to pdf in asp.net using c# and many articles relating to asp.net, c#,vb.net and jQuery. Now I will explain how to remove row from gridview in asp.net using c# , vb.net with confirmation message.
Before
implement this example first design one table UserDetails in your database as
shown below
Column Name
|
Data Type
|
Allow Nulls
|
UserId
|
Int(IDENTITY=TRUE)
|
Yes
|
UserName
|
varchar(50)
|
Yes
|
FirstName
|
varchar(50)
|
Yes
|
LastName
|
varchar(50)
|
Yes
|
Once
table created in database enter some dummy data to test application after that
write the following code in your aspx page
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1"
runat="server">
<title>ConfirmBox in Gridview Row Delete</title>
<script type="text/javascript">
function ConfirmationBox(username) {
var result = confirm('Are you sure
you want to delete '+username+' Details'
);
if (result) {
return true;
}
else {
return false;
}
}
</script>
</head>
<body>
<form id="form1"
runat="server">
<div>
<asp:GridView runat="server" ID="gvrecords" CellPadding="5"
DataKeyNames="UserId" AutoGenerateColumns="false" onrowdatabound="gvrecords_RowDataBound">
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
<Columns>
<asp:BoundField DataField="UserName" HeaderText="UserName" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName" />
<asp:BoundField DataField="LastName" HeaderText="LastName" />
<asp:TemplateField HeaderText="Delete User Details">
<ItemTemplate>
<asp:LinkButton ID="lnkdelete"
runat="server"
OnClick="lnkdelete_Click">Delete
User</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
|
Now open code behind file and write the following
code
C#
Code
using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class DeleteGridviewRows
: System.Web.UI.Page
{
protected void
Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindUserDetails();
}
}
protected void
BindUserDetails()
{
DataTable dt = new DataTable();
using (SqlConnection
con = new SqlConnection("Data Source=SureshDasari;Integrated
Security=true;Initial Catalog=MySampleDB"))
{
con.Open();
SqlCommand cmd = new SqlCommand("Select * from UserDetails", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(dt);
con.Close();
}
gvrecords.DataSource = dt;
gvrecords.DataBind();
}
protected void
gvrecords_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//getting username from particular row
string username = Convert.ToString(DataBinder.Eval(e.Row.DataItem,
"UserName"));
LinkButton lnkbtnresult = (LinkButton)e.Row.FindControl("lnkdelete");
lnkbtnresult.Attributes.Add("onclick",
"javascript:return ConfirmationBox('"
+ username + "')");
}
}
protected void
lnkdelete_Click(object sender, EventArgs e)
{
LinkButton lnkbtn = sender as LinkButton;
//getting particular row linkbutton
GridViewRow gvrow =
lnkbtn.NamingContainer as GridViewRow;
//getting userid of particular row
int userid = Convert.ToInt32(gvrecords.DataKeys[gvrow.RowIndex].Value.ToString());
int result;
using (SqlConnection
con = new SqlConnection("Data Source=SureshDasari;Integrated
Security=true;Initial Catalog=MySampleDB"))
{
con.Open();
SqlCommand
cmd = new SqlCommand("delete from UserDetails where UserId="
+ userid, con);
result = cmd.ExecuteNonQuery();
con.Close();
}
if (result == 1)
{
BindUserDetails();
}
}
}
|
VB.NET
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI
Imports System.Web.UI.WebControls
Partial Class VBCode
Inherits System.Web.UI.Page
Protected Sub
Page_Load(ByVal sender As Object, ByVal e As
EventArgs) Handles Me.Load
If Not
IsPostBack Then
BindUserDetails()
End If
End Sub
Protected Sub
BindUserDetails()
Dim dt As
New DataTable()
Using con As
New SqlConnection("Data
Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB")
con.Open()
Dim cmd As
New SqlCommand("Select
* from UserDetails", con)
Dim da As
New SqlDataAdapter(cmd)
da.Fill(dt)
con.Close()
End Using
gvrecords.DataSource = dt
gvrecords.DataBind()
End Sub
Protected Sub
gvrecords_RowDataBound(ByVal sender As Object, ByVal e As
GridViewRowEventArgs)
If e.Row.RowType =
DataControlRowType.DataRow Then
'getting username from particular row
Dim username As
String = Convert.ToString(DataBinder.Eval(e.Row.DataItem,
"UserName"))
Dim lnkbtnresult As LinkButton = DirectCast(e.Row.FindControl("lnkdelete"), LinkButton)
lnkbtnresult.Attributes.Add("onclick",
"javascript:return ConfirmationBox('"
& username & "')")
End If
End Sub
Protected Sub
lnkdelete_Click(ByVal sender As Object, ByVal e As
EventArgs)
Dim lnkbtn As
LinkButton = TryCast(sender, LinkButton)
'getting particular row linkbutton
Dim gvrow As
GridViewRow = TryCast(lnkbtn.NamingContainer,
GridViewRow)
'getting userid of particular row
Dim userid As
Integer =
Convert.ToInt32(gvrecords.DataKeys(gvrow.RowIndex).Value.ToString())
Dim result As
Integer
Using con As
New SqlConnection("Data
Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB")
con.Open()
Dim cmd As
New SqlCommand("delete
from UserDetails where UserId=" & userid, con)
result = cmd.ExecuteNonQuery()
con.Close()
End Using
If result = 1 Then
BindUserDetails()
End If
End Sub
End Class
|
Demo
 |
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