System.Net.Http.Headers.CacheControlHeaderParser
Parses the Cache-Control header.
Class Members
Methods
| Signature | Description |
|---|---|
static CacheControlHeaderValue Parse(string value) |
Parses a Cache-Control header string into a CacheControlHeaderValue object. |
static bool TryParse(string value, out CacheControlHeaderValue parsedValue) |
Attempts to parse a Cache-Control header string into a CacheControlHeaderValue object. Returns true if parsing succeeds, false otherwise. |
Related Classes
Remarks
The CacheControlHeaderParser class is used internally by the .NET framework to handle the parsing of the Cache-Control HTTP header. It converts the string representation of the header into a structured object that can be easily manipulated.
The Cache-Control header provides directives for caching mechanisms in both requests and responses. These directives specify how the resource should be cached and for how long.
Example Usage
While you typically won't directly use the CacheControlHeaderParser, you'll interact with its output via the CacheControlHeaderValue class.
using System.Net.Http;
using System.Net.Http.Headers;
// Assume response is an HttpResponseMessage
HttpResponseMessage response = /* ... get your response ... */;
if (response.Headers.CacheControl != null)
{
CacheControlHeaderValue cacheControl = response.Headers.CacheControl;
Console.WriteLine($"No-Cache: {cacheControl.NoCache}");
Console.WriteLine($"No-Store: {cacheControl.NoStore}");
Console.WriteLine($"Max-Age: {cacheControl.MaxAge}"); // TimeSpan
foreach (var directive in cacheControl.Extensions)
{
Console.WriteLine($"Extension: Name='{directive.Name}', Value='{directive.Value}'");
}
}
else
{
Console.WriteLine("No Cache-Control header found.");
}