Category C#

ASP.NET Core, C#

[Solved] InvalidOperationException: Unable to resolve service for type ‘Interface’ while attempting to activate the Controller in Asp.net core

Problem: In .NET Core MVC application, I was using Dependency Injection and Repository Pattern to inject a repository to my controller. However, I am getting an error: InvalidOperationException: Unable to resolve service for type ‘API_IN_COMPARE.Interface.ICategory’ while attempting to activate ‘API_IN_COMPARE.Controllers.WeatherForecastController’.…

April 11, 2022

[Solved] C# Validate sftp connection or check the access, list directories, upload files to the sftp server using Renci.SshNet and ftp server by using sftpClient.

Solution There is a simple way to validate the sftp server in c#, follow the below instructions to validate the SFTP server using c#. Install the packages Use NuGet package manager to install the SSH.NET api to our application as…

April 11, 2022
SFTP

.Net, ASP.NET Core, C#

[Solved] Your startup project ‘solution name’ doesn’t reference Microsoft.EntityFrameworkCore.Design. This package is required for the Entity Framework Core Tools to work. Ensure your startup project is correct, install the package, and try again.

Solution I solved this error by rechecking the the following points 1) The Microsoft.EntityrameworkCore.Design is installed in to the project The Microsoft.EntityrameworkCore.Design package has to be installed in to the project as shown in the below image 2) Select the…

April 11, 2022

ASP.NET Core, C#, Code Quality

What is auto-mapper and how to use it in asp.net core?.

Solution This article is the continuation of the How to create asp.net core API’s article, So I highly encourage you to see the article understand the source code file structure of the project. This article is for how to configure…

February 2, 2022
Auto-Mapper, Object-to-object Mapping

ASP.NET Core, C#

[Solved] The JSON value could not be converted to Microsoft.AspNetCore.JsonPatch.JsonPatchDocument in asp.net core 3.0 Http patch

I highly recommend you to install Microsoft.AspNetCore.MVC.NewtonsoftJson 3.1.10v to install the below package to the ap.net core web API project If you are working with .net core 3.1v. We will face some issues if we install the latest NewtonsoftJson package to the application

October 16, 2021

ASP.NET Core, C#, Visual Studio

[Solved] Package restore failed. Rolling back package changes in visual studio 2019

After I cleared the cache, I was able to download the NuGet package API into my asp.net core project.

October 16, 2021
2

ASP.NET Core, C#

[Solved] Package restore failed. Rolling back package changes for ‘Solution name’ Microsoft.AspNetCore.Mvc.NewtonsoftJson 5.0 to .NET Core 3.1

for asp.net core 3.1 version apps, It looks compatibility issue, because the latest NewtonsoftJson 5.0.1 is not compatible with netcoreapp 3.1

October 16, 2021

.Net, ASP.NET Core, C#

[Solved] InvalidOperationException: Unable to resolve service for type ‘AutoMapper.IMapper’ while attempting to activate ‘Controller’. in asp.net core web Api

AutoMapper is an object-object mapper. to configure the auto-mapper asp.net core mvc or APIs, add ConfigureServices() method of the Service class.

October 8, 2021

ASP.NET Core, C#

[Solved] ‘IServiceCollection’ does not contain a definition for ‘AddAutoMapper’ and no accessible extension method ‘AddAutoMapper’ accepting a first argument of type ‘IServiceCollection’ could be found (are you missing a using directive or an assembly reference?)

After adding install-Package AutoMapper.Extensions.Microsoft.DependencyInjection -Version 8.1.1 to the default project error has been solved.

October 8, 2021
1

.Net, ASP.NET, ASP.NET Core, C#, Entity Framework, SQL Server, Visual Studio

How to create Insert (Post), Read(Get), Patch(Update) and Delete ASP.NET Core API using Entity framework core and SQL Server as a database?

Procedure to create repository pattern ASP.net core web API get, post, patch, delete operations using Entity framework core and SQL server as database.

October 4, 2021
Entity Framework Core, LINQ, WEB API