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Showing posts with the label IIS

Step by step migration of ASP.NET Core 2.2 to 3.1

In order to upgrade/migrate asp.net core version to 3.1 following steps to be perform.
Download and install Visual Studio 2019 version 16.4 or higher.Download and install .NET Core 3.1  https://dotnet.microsoft.com/download/dotnet-core/3.1Upgrade the projects of solution to .NET Core 3.1 , because ASP.NET Core 3.1 requires it.Update existing Nuget packages to a version compatible with ASP.NET Core 3.1 in each projectUse IHost interface from a IHostBuilder instead of building and running a IWebHost from a IWebHostBuilder in Program.cs public static IHostBuilder CreateWebHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseKestrel() .UseSerilog() .UseStartup<Startup>(); }) Change AddMvc method has been replaced by AddControllers in Startup.cs of each projects.In Startup.cs,UseMvc method to be replaced by…

Prevent ASP.NET Forms Authentication from Timing Out on a Shared Hosting

I’m hosting a website on a shared hosting server. This site uses Forms Authentication to generate the session cookie that authenticates my users. Everything worked fine with the site, including authentication, until I tried to make it so my authentication cookies didn’t expire every 20 minutes, which is the default expiration setting for Forms Authentication


I have set following settings to my web.config

<authentication mode="Forms" > <forms loginUrl="~/Account/LogOn" timeout="2880" /> </authentication>
but even though the user log outs from the system in 2 mins its irritating to user.


To solve the issue we need to set machine key into the web.config file. To generate the machine key use following code snippet.

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Security.Cryptography; namespace keygenerator { class Program { static void Main(string[] argv) …

Internet explorer Loads pages from cache issue resolution in asp.net

Internet explorer have tendency to load pages from cache for same requested URL. Which makes thing worse where the content of the web page updated frequently. In this situation Internet Explorer not send request to the server for page rendering. To resolve the issue in asp.net there are two option available. Write the HTML code in head tag or write server side code to tell Internet explorer to not to load pages from cache.

If you are trying to add code in design or HTML page then add following code

<HTML><HEAD> <META HTTP-EQUIV="Pragma" CONTENT="no-cache"> <META HTTP-EQUIV="Expires" CONTENT="-1"> </HEAD><BODY> </BODY> </HTML> 
In Asp.NET, you can do it on a page-by-page granularity by using this set of methods prior to calling the web page by following way.


HttpContext.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1)); HttpContext.Response.Cache.SetValidUntilExpires(false); HttpContext.Response.C…

HTTP Error 500.19 - Internal Server Error -Complete solution

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HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid.