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Defines a provider for progress updates.
generic <typename T> public interface class IProgress
public interface IProgress<in T>
type IProgress<'T> = interface
Public Interface IProgress(Of In T)
The type of progress update value.This type parameter is contravariant. That is, you can use either the type you specified or any type that is less derived. For more information about covariance and contravariance, see Covariance and Contravariance in Generics.
Reports a progress update.