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Showing posts with the label MVC3

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(); }) Change AddMvc method has been replaced by AddControllers in Startup.cs of each projects.In Startup.cs,UseMvc method to be replaced by…

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…

Populate Dropdown with jquery using JSON request in asp.net mvc3

In this Article i am going to demonstrate to fill the dropdownlist with jquery using JSON in asp.net mvc3. To achieve this task we need to write the following JavaScript code in view (.cshtml page)

@{ ViewBag.Title = "Products"; } <script type="text/javascript"> jquery(document).ready(function () { jquery("ddlCategory").change(function () { var idModel = jquery("#ddlCategory").val(); jquery.getJSON("product/items/", { category: idModel }, function (carData) { var select =jquery("#ddlitems"); select.empty(); select.append($('<option/>', { value: 0, text: "" })); jquery.each(carData, function (index, itemData) { …