/// <summary>
/// get CTray by primary key.
/// </summary>
/// <param name="keys">primary key</param>
/// <returns>Student</returns>
public CTray GetByPrimaryKey(CTrayKeys keys)
{
return(_dataObject.SelectByPrimaryKey(keys));
}
/// <summary>
/// delete by primary key
/// </summary>
/// <param name="keys">primary key</param>
/// <returns>true for succesfully deleted</returns>
public bool Delete(CTrayKeys keys)
{
return(_dataObject.Delete(keys));
}