private static void ForEachCacheGroup(CacheGroupAction action)
{
// Groups may not always exist on the system.
// For more information, visit the following Microsoft Web site:
// http://msdn.microsoft.com/library/?url=/workshop/networking/wininet/overview/cache.asp
// By default, a URL does not belong to any group. Therefore, that cache may become
// empty even when the CacheGroup APIs are not used because the existing URL does not belong to any group.
long groupId = 0;
IntPtr enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);
int err = Marshal.GetLastWin32Error();
// If there are no items in the Cache, you are finished.
if (enumHandle == IntPtr.Zero)
{
if (err != ERROR_NO_MORE_ITEMS && err != ERROR_FILE_NOT_FOUND)
{
ThrowExceptionForLastWin32Error();
}
}
else
{
// Loop through Cache Group.
for (;;)
{
action(groupId);
// Get the next one.
bool returnValue = FindNextUrlCacheGroup(enumHandle, ref groupId, IntPtr.Zero);
err = Marshal.GetLastWin32Error();
if (!returnValue)
{
if (err != ERROR_NO_MORE_ITEMS && err != ERROR_FILE_NOT_FOUND)
{
ThrowExceptionForLastWin32Error();
}
break;
}
}
}
// Process group 0.
action(0);
}
private static void ForEachCacheGroup(CacheGroupAction action)
{
// Groups may not always exist on the system.
// For more information, visit the following Microsoft Web site:
// http://msdn.microsoft.com/library/?url=/workshop/networking/wininet/overview/cache.asp
// By default, a URL does not belong to any group. Therefore, that cache may become
// empty even when the CacheGroup APIs are not used because the existing URL does not belong to any group.
long groupId = 0;
IntPtr enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);
int err = Marshal.GetLastWin32Error();
// If there are no items in the Cache, you are finished.
if (enumHandle == IntPtr.Zero)
{
if (err != ERROR_NO_MORE_ITEMS && err != ERROR_FILE_NOT_FOUND)
ThrowExceptionForLastWin32Error();
}
else
{
// Loop through Cache Group.
for (;;)
{
action(groupId);
// Get the next one.
bool returnValue = FindNextUrlCacheGroup(enumHandle, ref groupId, IntPtr.Zero);
err = Marshal.GetLastWin32Error();
if (!returnValue)
{
if (err != ERROR_NO_MORE_ITEMS && err != ERROR_FILE_NOT_FOUND)
ThrowExceptionForLastWin32Error();
break;
}
}
}
// Process group 0.
action(0);
}