An exception occurred while reading a database value for property ‘QG_BuildSite_Info.IsToExamine‘. The expected type was ‘System.Boolean‘ but the actual value was null.
给数据库为空的bit类型字段默认值即可
EFCord 数据库bit值为空，读取数据时报错
原文：https://www.cnblogs.com/objectnull/p/13497270.html
