public virtual sysdiagramsRow GetByPrimaryKey(int diagram_id)
{
string whereSql = "[diagram_id]=" + _db.CreateSqlParameterName("Diagram_id");
IDbCommand cmd = CreateGetCommand(whereSql, null);
AddParameter(cmd, "Diagram_id", diagram_id);
sysdiagramsRow[] tempArray = MapRecords(cmd);
return(0 == tempArray.Length ? null : tempArray[0]);
}