原文:System.Data.SqlTypes.SqlNullValueException: 'Data is Null. This method or property cannot be called on Null values.'

If you are trying to read some nullable data from the database, but your type is not nullable you can get this error. IfMyIntis nullable in the database and you have this entity: public class MyEntit ...

2021-08-20 15:20 0 99 推薦指數:

查看詳情

Value cannot be null. Parameter name: source

下圖主要想說.net拋錯后的優先級, 錯誤1是根本原因,排第一位; 錯誤2里的方法包含了錯誤1,排第二位; 錯誤3就是整個Action了。 類似這樣的錯誤,按照這樣的順序來解決bug,相信很受 ...

Tue Mar 11 23:19:00 CST 2014 0 2875
 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM