Get NewValues of GridRow in Update Command GridView in ASP.NET

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
        // This is where you access the edited values

        int anumber = Convert.ToInt16(GridView1.Rows[e.RowIndex].Cells[0].Text); // this is some number for example
        string a_text = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text; //a_text
        string another_text = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text; //another_text
        
        //manipulate or validate these values like===> if(anumber < 0){anumber = 0;}
        
        // call your update method here
        // yourupdatefunction(a_number,a_text,another_text);  
        
        GridView1.EditIndex = -1;
       
        BindGridView(); // reflect changes made


}