C#DoCmd2D後端基本回傳結構，對應指令：
DoCmd2D
SetDrawData
SetSessionLayer
RemoveSessionLayer
NewLayerFromFile
NewWMTSGenerate
ResumeWMTSGenerate
PauseWMTSGenerate
RemoveWMTSGenerate
RemoveAllWMTSGenerate
IsExistWMTSGenerate
GetMap
DeleteLayer
是否處理成功
可選
錯誤訊息
C#
DoCmd2D後端基本回傳結構，對應指令：SetDrawDataSetSessionLayerRemoveSessionLayerNewLayerFromFileNewWMTSGenerateResumeWMTSGeneratePauseWMTSGenerateRemoveWMTSGenerateRemoveAllWMTSGenerateIsExistWMTSGenerateGetMapDeleteLayer