如何在asp.net中强制清除缓存 [英] How to force clear cache in asp.net

问题描述

如何在asp.net中强制清除缓存

How to force clear cache in asp.net

推荐答案

Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
 Response.Cache.SetCacheability(HttpCacheability.NoCache);
 Response.Cache.SetNoStore();

将此代码放入页面加载。现在缓存浏览器中没有数据会尝试从serv获取页面

Put this code in page load. Now there will be no data in cache browser will try to get the page from the serv

我试试这个但是看起来不行吗



public void DisablePageCaching（）

{

//用于禁用页面缓存

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（System.Web.HttpContext.Current.Cache中的DictionaryEntry entry_loopVariable）

{

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-cac他）;

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

}

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
}

如果你想设置当前页面的清除缓存，那么在按钮点击和页面加载时写下面的代码，它会工作对我来说。



HttpResponse.RemoveOutputCacheItem（/ pagecontentdetail.aspx）

If you want set clear cache of current page then write below code on button click as well as on page load, It will work for me.

HttpResponse.RemoveOutputCacheItem("/pagecontentdetail.aspx")

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