TaskCompletionSource is a class in C# that allows developers to create and manage asynchronous operations by providing a promise for a future result. One of the methods available in this class is IsNullFinishCanceledOrFaulted, which tests if the inner task that represents the operation has been completed and whether it finished with null, cancellation, or an exception.
Here are some code examples that illustrate the usage of IsNullFinishCanceledOrFaulted:
Example 1: Checking if an operation has completed and the result is null
var taskCompletionSource = new TaskCompletionSource