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(); }) Change AddMvc method has been replaced by AddControllers in Startup.cs of each projects.In Startup.cs,UseMvc method to be replaced by…

Numeric validation on textbox/input on keydown event using JQuery

This is simple way to implement the numeric validation on textbox or input control using jquery. Firstly you need to use jquery selector for binding the keydown event to input control. Once you bind it it will only allow numeric keys and reject the alphabetical keys. Following is the code snippet of the numeric validation using Jquery.

 $(document).ready(function () {
        $("#MobileNo").keydown(function (e) {
            // Allow: backspace, delete, tab, escape, enter and .
            if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
            // Allow: Ctrl+A
            (e.keyCode == 65 && e.ctrlKey === true) ||
            // Allow: home, end, left, right, down, up
            (e.keyCode >= 35 && e.keyCode <= 40)) {
                // let it happen, don't do anything
                return;
            }
            // Ensure that it is a number and stop the keypress
            if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
                e.preventDefault();
            }
        });
    });

Give your feedback for the code snippet.
   

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