How to force clear cache in asp.net
Step1: Write on page load of every web page
Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetNoStore();
Step:2
i try this but it seems not working
public void DisablePageCaching()
{
//Used for disabling page caching
HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
HttpContext.Current.Response.Cache.SetValidUntilExpires(false);
HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.Cache.SetNoStore();
HttpContext.Current.Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
}
private void ClearCache()
{
DictionaryEntry entry = default(DictionaryEntry);
foreach (DictionaryEntry entry_loopVariable in System.Web.HttpContext.Current.Cache)
{
entry = entry_loopVariable;
System.Web.HttpContext.Current.Cache.Remove(entry.Key.ToString());
}
IDictionaryEnumerator enumerator = HttpContext.Current.Cache.GetEnumerator();
while (enumerator.MoveNext())
{
HttpContext.Current.Cache.Remove(enumerator.Key.ToString());
}
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Expires = 0;
HttpContext.Current.Response.CacheControl = "no-cache";
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.ServerAndNoCache);
HttpContext.Current.Response.Cache.SetNoStore();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.ExpiresAbsolute =DateTime.Now.Subtract(new TimeSpan(1,0,0,0));
HttpContext.Current.Response.AppendHeader("Pragma", "no-cache");
HttpContext.Current.Response.AppendHeader("", "");
HttpContext.Current.Response.AppendHeader("Cache-Control", "no-cache"); //HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "private"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "no-store"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "must-revalidate"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "max-stale=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "post-check=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "pre-check=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Pragma", "no-cache"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Keep-Alive", "timeout=3, max=993"); // HTTP 1.1
}
public void DisablePageCaching()
{
//Used for disabling page caching
HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));
HttpContext.Current.Response.Cache.SetValidUntilExpires(false);
HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.Cache.SetNoStore();
HttpContext.Current.Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
}
private void ClearCache()
{
DictionaryEntry entry = default(DictionaryEntry);
foreach (DictionaryEntry entry_loopVariable in System.Web.HttpContext.Current.Cache)
{
entry = entry_loopVariable;
System.Web.HttpContext.Current.Cache.Remove(entry.Key.ToString());
}
IDictionaryEnumerator enumerator = HttpContext.Current.Cache.GetEnumerator();
while (enumerator.MoveNext())
{
HttpContext.Current.Cache.Remove(enumerator.Key.ToString());
}
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Expires = 0;
HttpContext.Current.Response.CacheControl = "no-cache";
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.ServerAndNoCache);
HttpContext.Current.Response.Cache.SetNoStore();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.ExpiresAbsolute =DateTime.Now.Subtract(new TimeSpan(1,0,0,0));
HttpContext.Current.Response.AppendHeader("Pragma", "no-cache");
HttpContext.Current.Response.AppendHeader("", "");
HttpContext.Current.Response.AppendHeader("Cache-Control", "no-cache"); //HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "private"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "no-store"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "must-revalidate"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "max-stale=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "post-check=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Cache-Control", "pre-check=0"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Pragma", "no-cache"); // HTTP 1.1
HttpContext.Current.Response.AppendHeader("Keep-Alive", "timeout=3, max=993"); // HTTP 1.1
}
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