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ASP.NET Core

Blog posts about ASP.NET Core

.net core lite-log

ASP.NET Core 2.1 Error - 'Cyrillic' is not a supported encoding name

78 views   0 comments last modified about 2 months ago

After upgrading to ASP.NET Core 2.1 (.NET Core SDK 2.1.301), you may encounter the following error about encoding: System.ArgumentException    HResult=0x80070057    Message='Cyrillic' is not a supported encoding name. For information on defining a custo...

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asp.net core 2 .net core

Graphics Programming and Image Processing in .NET Core 2.x

23 views   0 comments last modified about 2 months ago

In .NET Core 2.x, Windows Forms or WPF are not implemented since they are based on GDI+ and DirectX respectively in Windows. In .NET Core 3.0, there is plan to add Desktop Packs which includes UWP. WPF and Windows Forms. However, they will still be Windows-only. In .NET Core applications, you may...

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dotnetcore bootstrap

ASP.NET Core 2 with Bootstrap 4 Bundler Minifier Issue: Expected semicolon or closing curly-brace found '-'

766 views   1 comments last modified about 7 months ago

Background When upgrading Bootstrap to v4.0.0 release, the bundler and minifier doesn’t work properly due to CSS variable is commonly used: :root{--blue:#007bff; About 26 errors will show up in the Error List with the following message: ...

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dotnet core asp.net core

Retrieve Http client request metadata like IP address and languages in asp.net core

1208 views   0 comments last modified about 11 months ago

IP Address In ASP.NET Core, Request.UserHostAddress has been removed though that attribute exists in the traditional ASP.NET applications. We can use HttpContext.Connection to retrieve the remove client IP address: var ipAddress = HttpContext.Connecti...

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asp.net core identity core 2

Retrieve Identity username, email and other information in ASP.NET Core

1353 views   0 comments last modified about 11 months ago

The identity system in ASP.NET has evolved over time. If you are using ASP.NET Core, you probably found User property is an instance of ClaimsPrincipal in Controller or Razor views. Thus to retrieve the information, you need to utilize the claims.

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.net core azure

Retrieve Azure AppSettings and Connection String Settings in ASP.NET Core Apps

1743 views   0 comments last modified about 10 months ago

In ASP.NET Core, we can easily use user secrets to manage our password or credentials. This post will summarize the approaches we can use after the websites are deployed into Azure.

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asp.net core 2

Server.MapPath Equivalent in ASP.NET Core 2

4995 views   0 comments last modified about 11 months ago

In traditional asp.net applications, Server.MapPath is commonly used to generate absolute path in the web server. However, this has been removed from ASP.NET Core. So what is the equivalent way of doing it?

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OpenIddict Refresh Token Flow issue ASP.NET Core 2.0

1233 views   0 comments last modified about 12 months ago

Context When I followed OpenIDDict refresh flow sample, I constantly got the issue “The refresh token is no longer valid”, which is returned by the following code in my authorization web api controller: result.Content = new OpenIdConnectResponse  &...

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