What is main use of VaryByCustom in mvc?

Question

What is main use of VaryByCustom Action Filter in mvc?

Sreekanth Reddy · Answer

Caching can be done based on the browser type like for IE or Chrome or FireFox and their version level. Firs time you may open in IE and that data will be stored in cache. If you open again in Only IE the cached data wuld come else it will come again by processing. Hope you understood. I fnot come up with a query. Thank you.

Sanwar Ranwa · Answer

Hello Amit public override string GetVaryByCustomString(HttpContext context, string custom) { if(custom=="Browser") { If(context.Request.Browser.Mozilla) { return "AOLMozilla} else { return "NotAOL"; } } return Guid.NewGuid().ToString(); } Please check these Links https://www.dotnettricks.com/learn/mvc/understanding-caching-in-aspnet-mvc-with-example https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.partialcachingattribute.varybycustom?view=netframework-4.7.2#System_Web_UI_PartialCachingAttribute_VaryByCustom https://www.c-sharpcorner.com/blogs/varybycustom-caching-in-asp-net-mvc3

Uttam Chaturvedi · Answer

Please have a look in the below link: https://stackoverflow.com/questions/5313921/how-to-implement-varybycustom-caching https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.partialcachingattribute.varybycustom?view=netframework-4.7.2#System_Web_UI_PartialCachingAttribute_VaryByCustom