OptimisticConcurrencyException does not exist in System.Data
Question
I have installed EntityFramework 6 for my project. Now I want to use OptimisticConcurrencyException from System.Data but Visual Studio 2012 tells that it's not there. Where can I find it?
1 answers
solution1
4 ACCPTED 2013-12-14 21:37:52
Ok. I found the answer. System.Data is deprecated and System.Data.Entity.Core should be used instead.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
LINQ to SQL, 'Linq' does not exist in the namespace 'System.Data'
The type or namespace name 'Objects' does not exist in the namespace 'System.Data'
The type or namespace name 'Entity' does not exist in the namespace 'System.Data'
The type or namespace name 'OracleClient' does not exist in the namespace 'System.Data'
The type or namespace name 'SQLite' does not exist in the namespace 'System.Data'
Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' VSTS (DevOps)
The type or namespace name 'OleDb' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
The type or namespace name 'SQLite' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
The type or namespace name 'DataSetExtensions' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
System.Data Doesn't Exist in Visual Studio 2010
Related Tags