Web Design and Development Course in Kolkata

Web Design and Development Course in Kolkata

Web Development Course in Kolkata, Web Design and Development Course in Kolkata, Best web development training institute in Kolkata, Web Design training Kolkata

Our web development course has been designed by the expert who has been actively involved in web development as well as providing training for last several years.

If you are thinking to join for web designing course in Kolkata, we assure you that we will provide you industry standard web development course in Kolkata with live projects.

http://webtrainingroom.com/kolkata

Code First Approach in Entity Framework

Learn Code First Approach in Entity Framework Step by Step

Code First Approach in EntityFramework 

http://webtrainingroom.com/entityframework/codefirst

Unable to cast object of type 'ConcreteTypeMapping' to type 'Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping

Error while adding data using entity framework core 2.1 with asp.net core

Unable to cast object of type 'ConcreteTypeMapping' to type 'Microsoft.EntityFrameworkCore.Storage.RelationalTypeMapping

Package 'EntityFramework 6.2.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.0'

Are you installing entity framework in your Asp.Net Core Application and getting following error ?

Package 'EntityFramework 6.2.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETCoreApp,Version=v2.0'

The problem is 'EntityFramework 6.2.0'  supports  .NETFramework,Version=v4.6.1' not  '.NETCoreApp,Version=v2.0'.

You need to install the right version of Entity framework for your Asp.Net Core 2.0, So use this below version of entity framework, install from command.

PM>  Install-Package Microsoft.EntityFrameworkCore -Version 2.0.1 

or serach for EntityFrameworkCore 

Cannot find an instance of the Microsoft.VisualStudio.Shell.Interop.IVsReferenceManager service- Solved

In Visual Studio 2017 Asp.Net Core Project while trying to add reference of a Class Library getting this following error 

"Cannot find an instance of the Microsoft.VisualStudio.Shell.Interop.IVsReferenceManager service." - Solved 

Please follow the following steps 

1.Launch Developer Command Prompt for VS 2017

While opening the command prompt, please make sure you run that as administrator 

2.CD 

C:\Program Files\Microsoft Visual Studio\2017\Community\Common7\IDE\PublicAssemblies

3.Run gacutil -i Microsoft.VisualStudio.Shell.Interop.11.0.dll

After installing , close and reopen your asp.net core project , and now try to add reference you should be able to add