Ajax Yes/No button options Customized Style of Confirmation box in asp.net

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First design table in your database like this
Column Name

Data Type

Allow Nulls
UserId

int(set identity property=true)

No
UserName

varchar(50)

Yes
FirstName

varchar(50)

Yes
LastName

varchar(50)

Yes

After that enter some dummy data in table to bind that data to gridview add AjaxControlToolkit.dll reference to your application you don’t know how to use AjaxControlToolkit no worry check this post how to install AjaxControlToolkit and design your aspx page like this

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %>

Confirm Box

After completion our aspx page design write the following namespaces in codebehind

C# Code

using System;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web.UI;
using System.Web.UI.WebControls;
After completion of writing namespaces and write the following code


SqlConnection con = new SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindUserDetails();
}
}
protected void BindUserDetails()
{
//connection open
con.Open();
//sql command to execute query from database
SqlCommand cmd = new SqlCommand("Select * from UserDetails", con);
cmd.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
//Binding data to gridview
gvDetails.DataSource = ds;
gvDetails.DataBind();
con.Close();
}
protected void btnYes_Click(object sender, ImageClickEventArgs e)
{
//getting userid of particular row
int userid = Convert.ToInt32(Session["UserId"]);
con.Open();
SqlCommand cmd = new SqlCommand("delete from UserDetails where UserId=" + userid, con);
int result = cmd.ExecuteNonQuery();
con.Close();
if (result == 1)
{
lblresult.Text = Session["UserName"] + " Details deleted successfully";
lblresult.ForeColor = Color.Green;
BindUserDetails();
}
}
protected void btnDelete_Click(object sender, ImageClickEventArgs e)
{
ImageButton btndetails = sender as ImageButton;
GridViewRow gvrow = (GridViewRow)btndetails.NamingContainer;
Session["UserId"] = gvDetails.DataKeys[gvrow.RowIndex].Value.ToString();
Session["UserName"] = gvrow.Cells[0].Text;
lblUser.Text = "Are you sure you want to delete " + Session["UserName"] + " Details?";
ModalPopupExtender1.Show();
}