Suppressing Caching in ASP.NET MVC Actions with Attributes
Challenge:
In ASP.NET MVC applications, you often need to prevent specific actions from caching data to ensure you always retrieve the latest information.
Solution:
1. Disabling jQuery Caching:
To stop jQuery from caching AJAX responses, use the cache: false option in your AJAX settings:
$.ajax({
cache: false,
// ... rest of your AJAX configuration
});
2. Implementing a Custom NoCache Attribute:
For more precise control, create a custom attribute to manage caching within your MVC actions:
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public sealed class NoCacheAttribute : ActionFilterAttribute
{
public override void OnResultExecuting(ResultExecutingContext filterContext)
{
// Configure HTTP headers to disable caching
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);
}
}
3. Applying the NoCache Attribute:
Apply the attribute to the controller or individual actions requiring no caching:
[NoCache]
public class SomeController : Controller
{
// Controller actions
}
4. Global Caching Prevention:
For a site-wide approach, apply the NoCache attribute to your base controller class:
[NoCache]
public class ControllerBase : Controller, IControllerBase
{
// Controller actions
}
5. Browser Cache Refresh:
After implementing these changes, remember to perform a hard refresh (Ctrl F5) in your browser to clear any existing cached data and see the updated results.
The above is the detailed content of How to Prevent Caching in ASP.NET MVC Actions?. For more information, please follow other related articles on the PHP Chinese website!
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