ASP.NET Web Forms DevExpress Update,Delete İşlemleri

Question

.cs tarafında delete(ASPxGridView1_RowDeleting),update(ASPxGridView1_RowUpdating) gibi işlemleri yapabilmem için örnek kodları paylaşabilir misiniz ? Veritabanı tarafında yazarno(primary key),yazaradi nvarchar,yazarsoyadi(nvarchar) kolonları var.

Mevcut kodları aşağıda paylaşıyorum.

1-WebForm1.aspx

    <dx:ASPxGridView ID="ASPxGridView1" KeyFieldName="yazarno" OnRowCommand="ASPxGridView1_RowCommand"
            OnRowUpdating="ASPxGridView1_RowUpdating" OnRowDeleting="ASPxGridView1_RowDeleting"
             OnRowInserting="ASPxGridView1_RowInserting"  runat="server" AutoGenerateColumns="False">
            <Settings ShowGroupPanel="True" />
<SettingsPopup>
<HeaderFilter MinHeight="140px"></HeaderFilter>
</SettingsPopup>
            <SettingsSearchPanel Visible="True" />
            <Columns>
                
                <dx:GridViewCommandColumn ShowDeleteButton="True" ShowEditButton="True" ShowNewButtonInHeader="True" VisibleIndex="0">
                </dx:GridViewCommandColumn>
                <dx:GridViewDataTextColumn Caption="ID" FieldName="yazarno" VisibleIndex="1" Visible="False">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn Caption="Ad" FieldName="yazaradi" VisibleIndex="2">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn Caption="Soyadı" FieldName="yazarsoyadi" VisibleIndex="3">
                </dx:GridViewDataTextColumn>
            </Columns>
        </dx:ASPxGridView>



        <asp:SqlDataSource ID="SqlDataSource1" runat="server">
          
           
          
        </asp:SqlDataSource>

2-WebForm1.aspx.cs

using DevExpress.Web;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication4
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        SqlConnection con;
        string sqlconn;
        protected void Page_Load(object sender, EventArgs e)
        {


            if (!IsPostBack)
            {
                GridViewDoldur();
            }
           




       
        }

        void GridViewDoldur()
        {
            DataTable dtbl = new DataTable();

            connection();
            con.Open();
            SqlDataAdapter sqlDa = new SqlDataAdapter("SELECT *FROM yazar",con);
            sqlDa.Fill(dtbl);
            if (dtbl.Rows.Count >0)
            {
                ASPxGridView1.DataSource = dtbl;
                ASPxGridView1.DataBind();
            }
          



        }

        private void connection()
        {
            sqlconn = ConfigurationManager.ConnectionStrings["deneme3ConnectionString"].ConnectionString;
            con = new SqlConnection(sqlconn);
        }
 protected void ASPxGridView1_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e){

}

 protected void ASPxGridView1_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e){

}