public void StartBindingData()
{
var result = ContactsDAL.GetAll();
if (result.Code < 0)
{
lbError.InnerText = result.ErrorMessage;
lbError.Visible = true;
}
lbError.Visible = false;
//---
_dataSource = result.Data.Tables[0];
grvContactsItems.DataSource = result.Data;
grvContactsItems.DataKeyNames = new string[] { "Id" };
grvContactsItems.DataBind();
}