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System.IO.FileNotFoundException when creating EF migrations on .net core

By : Eidan Howells
Date : September 29 2020, 09:00 AM
To fix the issue you can do I have a .NET Core 2.2 project and am trying to set up EF migrations. , Try;
Add context name to options constructor.
code :
 public MyDbContext(DbContextOptions<**MyDbContext**> options)
      : base(options)

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C# .NET Core How to debug System.IO.FileNotFoundException in System.Private.CoreLib.dll?

By : sean sh
Date : March 29 2020, 07:55 AM
this one helps. Go to Debug/Windows/Exception Settings and check FileNotFoundException under Common Language Runtime Exceptions. The debugger will stop when the exception is thrown and you will be able to see what is going on.
Note that it is not unusual for exceptions to be expected and handled in some cases. You may find that the exception is expected and handled, and nothing needs to be done to fix it.

UWP Xamarin.Forms 'System.IO.FileNotFoundException' occurred in System.Private.Reflection.Core.dll

By : howie wong
Date : March 29 2020, 07:55 AM
To fix this issue The problem was async/await method when I use Storage API, and for System.IO.FileNotFoundException I had to update Visual Studio.

System.IO.FileNotFoundException - CefSharp.Core.dll not found in release

By : Jenny Le'Dang
Date : March 29 2020, 07:55 AM
With these it helps Ok, finally I found what is the cause of your problem. CefSharp needs to have some files in root application directory.
In setup project, when selecting files for Application folder, choose Add => File... instead of Add => Project Output.... Then navigate to your build folder and pick all files. This will create 1 to 1 copy of your output files when running setup executable.

'System.IO.FileNotFoundException' in compressor/decompressor .Net Core console program

By : user2360850
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I think the problem is actually that your app doesn't have permissions to write to the specified output location. Check the docs for FileMode.OpenOrCreate
code :
using System;
using System.IO;
using System.IO.Compression;

namespace ConsoleApp1
    internal class Program
        private static readonly string outPutFileName = @"C:<my desktop directory>\gergrgr.gzip";

        public static void Compress(string inPath)
            using (var inputStream = new FileStream(inPath, FileMode.OpenOrCreate, FileAccess.ReadWrite))
                using (var outputStream = new FileStream(outPutFileName, FileMode.OpenOrCreate, FileAccess.Write))
                    using (var gzip = new GZipStream(outputStream, CompressionMode.Compress))

        private static void Main(string[] args)
            // info info info....
            Console.WriteLine("Drag in txt file");

            // Takes the path from dragged in file
            var filePath = Console.ReadLine();
            if (!string.IsNullOrEmpty(filePath))
                Compress(filePath.Trim('\\', '"'));

Previous incompatible ef core migrations, how to correctly bypass them in a CI/CD system?

By : nwazhere
Date : March 29 2020, 07:55 AM
it helps some times Based on my experience, and confirmed with my colleagues, I’m afraid that if you don’t want to use from to in the generated migration script or use powershell script to achieve this , there’s no such other method can let you bypass the applied migration then only apply the changed migration script.
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