C#

Fetch Web Pages from Local Cache

See more HTTP Examples

Demonstrates how to keep a local cache to avoid re-fetching web pages. C#

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

//  Define a cache directory and set the number of levels based on the anticipated size of the cache.
http.AddCacheRoot("c:/example/httpCache/");

//  up to 256 sub-directories under the cache root will be created as needed to hold cached GET's.
http.NumCacheLevels = 1;

//  Tell the http object to fetch from the cache if possible.
http.FetchFromCache = true;

//  Also tell the http object to update the cache with newly fetched pages.
http.UpdateCache = true;

//  This HTTP GET should result in a cache file getting created.
string html = http.QuickGetStr("https://www.google.com/");
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

//  The 1st GET was not from cache:
Debug.WriteLine("Fetched from cache: " + Convert.ToString(http.LastFromCache));

//  Fetching again will cause the page to be delivered from our local cache.
html = http.QuickGetStr("https://www.google.com/");
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

//  The 2nd GET is from cache:
Debug.WriteLine("Fetched from cache: " + Convert.ToString(http.LastFromCache));