When to use TempData vs Session in ASP.Net Core ?

Question

People who used TempData in ASP.NET MVC probably knows that by default TempData is stored in a Session state. This means that the web application must have sessions enabled. Now the ASP.NET Core 2.0 gives two TempData providers; a Cookie based and a Session State-based. This blog shows how to use both of them in an application in ASP.NET Core. By default ASP.NET Core 2.0 makes use of cookies based TempData provider. This means values of TempData are stored in cookies present in the client’s machine. Since TempData gest stored in cookies you don’t require Session state through the session state middleware. So how to store TempData in cookies that coulde be useful it ?

Manav Pandya · Answer

Hello Note :  TempData itself using Cookies  For that you can locate binary data using F12 in your browser Another option is : [Session Based TempData] : Write following snippet in startup.cs file - public void ConfigureServices(IServiceCollection services) { services.AddMvc().AddSessionStateTempDataProvider(); services.AddSession(); } public void Configure(IApplicationBuilder app IHostingEnvironment env) { app.UseSession(); app.UseMvcWithDefaultRoute(); } Where : AddSessionStateTempDataProvider() Switch default data provider to SessionProvider . UseSession() Defines that use session state middleware Thanks