protected void OnRowDeleting(object sender, GridViewDeleteEventArgs e)
{
int employeeId = Convert.ToInt32(employeeGridView.DataKeys[e.RowIndex].Values[0]);
var da = new EmployeeDataAccess();
var employee = da.GetEmployees().FirstOrDefault(emp => emp.EmployeeId == employeeId);
da.RemoveEmployee(employee);
da.SaveChanges();
this.BindGrid();
}
