OutputCacheProvider FindCacheProvider (HttpApplication app)
{
#if NET_4_0
HttpContext ctx = HttpContext.Current;
if (app == null) {
app = ctx != null ? ctx.ApplicationInstance : null;
if (app == null)
throw new InvalidOperationException ("Unable to find output cache provider.");
}
string providerName = app.GetOutputCacheProviderName (ctx);
if (String.IsNullOrEmpty (providerName))
throw new ProviderException ("Invalid OutputCacheProvider name. Name must not be null or an empty string.");
OutputCacheProvider ret = OutputCache.GetProvider (providerName);
if (ret == null)
throw new ProviderException (String.Format ("OutputCacheProvider named '{0}' cannot be found.", providerName));
return ret;
#else
if (provider == null)
provider = new InMemoryOutputCacheProvider ();
return provider;
#endif
}
OutputCacheProvider FindCacheProvider (HttpApplication app)
{
#if NET_4_0
HttpContext ctx = HttpContext.Current;
if (app == null) {
app = ctx != null ? ctx.ApplicationInstance : null;
if (app == null)
throw new InvalidOperationException ("Unable to find output cache provider.");
}
string providerName = app.GetOutputCacheProviderName (ctx);
if (String.IsNullOrEmpty (providerName))
throw new ProviderException ("Invalid OutputCacheProvider name. Name must not be null or an empty string.");
if (String.Compare (providerName, OutputCache.DEFAULT_PROVIDER_NAME, StringComparison.Ordinal) == 0) {
if (provider == null)
provider = new InMemoryOutputCacheProvider ();
return provider;
}
OutputCacheProviderCollection providers = OutputCache.Providers;
OutputCacheProvider ret = providers != null ? providers [providerName] : null;
if (ret == null)
throw new ProviderException (String.Format ("OutputCacheProvider named '{0}' cannot be found.", providerName));
return ret;
#else
if (provider == null)
provider = new InMemoryOutputCacheProvider ();
return provider;
#endif
}
public void GetOutputCacheProviderName ()
{
var app = new HttpApplication ();
Assert.AreEqual ("AspNetInternalProvider", app.GetOutputCacheProviderName (null), "#A1");
}