public static AsyncSynchronizationContext Register()
{
var syncContext = Current;
if (syncContext == null)
throw new InvalidOperationException("Ensure a synchronization context exists before calling this method.");
var customSynchronizationContext = syncContext as AsyncSynchronizationContext;
if (customSynchronizationContext == null)
{
customSynchronizationContext = new AsyncSynchronizationContext(syncContext);
SetSynchronizationContext(customSynchronizationContext);
}
return customSynchronizationContext;
}