Clear cache in mvc3.

Question

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I am using Sql server to upload images and the uploaded images are immediately reflected in the grid below.my problem is when ever i change or edit the picture,the picture is changed in the database but the grid shows the previous image that I had deleted.and i have to log out and lo-gin again to see the changes. Is there any way to over come this? Is there any way to clear cache each time the grid reloads?

Try to refresh the page. Is not the best practice but i think will work. — kostas ch., Mar 14 '14 at 07:19

score 0 · Answer 1 · edited May 23 '17 at 11:49

You can try writing your own attribute such as [no-cache] in the post below, and can use it on your controller to prevent caching.

Prevent Caching in ASP.NET MVC for specific actions using an attribute

http://dotnetnsqlcorner.blogspot.co.uk/2012/09/disable-caching-for-controller-action.html?m=1

To disable client side caching, you could also use [outputcacheattattribute] on your action result. Below post might help.

[OutputCacheAttribute(VaryByParam = "*", Duration = 0, NoStore = true)]

How can I disable client side and proxy caching in ASP.NET MVC?

There are other ways of disabling the cache as well,, but I guess one of the above two approaches should do the job. Hope this helps

score 0 · Answer 2 · answered Mar 14 '14 at 07:40

You can use the Duration for particular catche into your project:

just have a look to this: http://dotnet.dzone.com/articles/programmatically-clearing-0

and If cache is formed on Client-side using Jquery-ajax then use::

$.ajax({
    cache: false
    //rest of your ajax setup
});

score 0 · Answer 3 · edited May 23 '17 at 12:05

You can target your action methods and create a no cache action filter attribute in addition to cache: false in your ajax call.

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public sealed class NoCacheAttribute : ActionFilterAttribute
{
  public override void OnResultExecuting(ResultExecutingContext filterContext)
  {
     filterContext.HttpContext.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
     filterContext.HttpContext.Response.Cache.SetValidUntilExpires(false);
     filterContext.HttpContext.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
     filterContext.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
     filterContext.HttpContext.Response.Cache.SetNoStore();

     base.OnResultExecuting(filterContext);
  }
}

This is well explained Here. Hope it helps.

Clear cache in mvc3.

3 Answers3