Gets the value of the current Tuple`3 object's first component.
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You can dynamically determine the type of the Tuple`3.Item1 component in one of two ways:
By calling the GetType method on the value that is returned by the Tuple`3.Item1 property.
By retrieving the Type object that represents the Tuple`3 object, and retrieving the first element from the array that is returned by its Type.GetGenericArguments method.