Get DataKeyNames on GridView's RowUpdating Event in asp.net

Introduction: 

 In this article we will learn how to read DataKeyNames on GridView's RowUpdating Event in asp.net.Suppose you have a GridView grdEmp having DataKeyNames DataKeynames empid  and you want to read empid  from DataKeyNames on Gridview’s RowUpdating Event then here is  the code:


Note: We are assuming empid  is the primary key of the Employee table

<asp:GridView ID="grdEmp" runat="server" DataKeyNames=" empid  " onrowupdating="grdEmp_RowUpdating">

</GridView>

C#.Net Code to read DataKeyNames on GridView's RowUpdating Event in asp.net

protected void grdEmp_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {     

int empId = Convert.ToInt32(grdEmp.DataKeys[e.RowIndex].Value); //First way

int empId = Convert.ToInt32(grdEmp.DataKeys[e.RowIndex].Value.ToString());//Second way

int empId = Convert.ToInt32(grdEmp.DataKeys[e.RowIndex].Values["empid "].ToString());//Third way

    }

VB.Net Code to read DataKeyNames on GridView's RowUpdating Event in asp.net
Protected Sub grdEmp_RowUpdating(sender As Object, e As GridViewUpdateEventArgs)

                    Dim empId As Integer = Convert.ToInt32(grdEmp.DataKeys(e.RowIndex).Value) 'First way

                    Dim empId As Integer = Convert.ToInt32(grdEmp.DataKeys(e.RowIndex).Value.ToString())             'Second way

                    Dim empId As Integer =Convert.ToInt32(grdEmp.DataKeys(e.RowIndex).Values("empid ").ToString())   'Third way

End Sub