System.Data.Entity.DbContext can't find to add as a reference

System.Data.Entity. The database could not be found.

You need to reference the ...EntityFramework.dll... assembly which is where the ...Database... class is declared. You could install it from the corresponding ...NuGet package....

Can't find System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer

I hope I am not late. I am using ...ASP.NET MVC... 4 and ...Entity Framework 6 alpha 3... and ran into a similar problem....I have multiple projects in my solution. The 2 main projects are:...MyProject.Infrastructure.EntityFramework MyProject.Web ...In the first project I would set up all my repositories, ...DbContext..., etc etc. In this project...

Can't solve Could not load type 'System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider'

I had the same error in visual studio 2015.......Could not load type System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider...I solve the problem by adding the line: ...<assemblies> .... <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" /> .... </assemblies> ...in main ...Web....

Cannot implicitly convert type System.Data.Entity.Core.Objects.ObjectResult to System.Data.Objects.ObjectResult

You need to upgrade to the new Entity Framework 6 runtime....Right-click on your project and select ...Manage NuGet Packages...... Under the ...Online... tab select ...EntityFramework... and click ...Install... Note: If a previous version of the EntityFramework NuGet package was installed this will upgrade it to EF6. Alternatively, you can run the ...

cannot convert from 'System.Data.Objects.ObjectParameter' to 'System.Data.Entity.Core.Objects.ObjectParameter'

using System.Data.Object; using System.Data.Objects.DataClasses; ...Replace for:...using System.Data.Entity.Core.Objects; using System.Data.Entity.Core.Objects.DataClasses;

Method not found: 'Void System.Data.Entity.DbModelBuilder.RegisterEntityType(System.Type)'

This exception probably is happening because of the different versions of loaded assemblies. If XAF referencies the 6.0.0 version in it's metadata, and your project doesn't, the compiler will load the 6.0.0 version to bin folder....You can try overload the assembly version in you application configuration file (app.config), using something like thi...

Unable to cast object of type 'DBContext.Models.Contact' to type 'System.Data.Entity.Infrastructure.IObjectContextAdapter'

In the ...answer... you have referenced, the answer has this:...var manager = ((IObjectContextAdapter)db).ObjectContext.ObjectStateManager; ^^ || see this is db ...That works because the OP in that question has a type which implements the ...

Can't find ADO.net Entity Data Model template in VS2017

Go to Tools -> Get Tools and features...Select Individual components tab and check Entity Framework 6 tools under SDK's, libraries, and framework section

Method not found: 'System.Data.Entity.DbSet`1<..> ..Entities.get_tb_BrandManufacturer()'

After closing, re-opening with all projects loaded (it's a fairly large solution so some projects unloaded when working on feature), removing and adding tables to EF designer again, rebuilding it started to work.

Cannot convert from system.data.common.dbconnection to system.data,sqlconnection

Please check below code upload excel to SQL bulk upload...Controller Code... [HttpPost] public ActionResult ImportExcel(HttpPostedFileBase postedFile) { try { string filePath = string.Empty; if (postedFile != null) { //Save File string path = Server.MapPath("~/ExcelUplo...