c# - Updating Entity Framework without Nuget from Vs2010 to Vs2015 -

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just started working @ company planning on taking existing project , revamping it. project windows form built in c# , communicates app windows mobile 6.5, relays information app database management application. uses .net 4.0 entity framework 4.0.

i going working on , first thing migrate project vs2010 vs2015; however, whenever try directly, have errors show references missing. have double checked .net targets projects in solution , match.

i have tried going vs2010 vs2012 take step @ time; however, same errors show before.

i have tried:

  • setting targets each project in solution
  • installing nuget, cannot find entity framework in porject
  • package manager console, can never find version of entityframework
  • when get-package typed package manager console, no packages installed returns
  • installing manually, there no entityframework.dll in solution folders

this project have entity framework system.data.entity included , looks of it, has entity framework api , calls.

specific errors:

  • when opening in vs2015, "sync.designer.cs" cannot saved because write protected. tried selecting folders , removing read-only permission
  • when trying build, type or namespace name not found(are missing using directive or assembly reference?) file using namespace 'missing' file


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