protected virtual IDbCommand CreateGetCommand(string whereSql, string orderBySql)
{
string sql = "SELECT * FROM [dbo].[sysdiagrams]";
if (null != whereSql && 0 < whereSql.Length)
{
sql += " WHERE " + whereSql;
}
if (null != orderBySql && 0 < orderBySql.Length)
{
sql += " ORDER BY " + orderBySql;
}
return(_db.CreateCommand(sql));
}