MoreEnumerableIndexTSource(IEnumerableTSource, Int32) Method
            Returns a sequence of 
KeyValuePairTKey, TValue
            where the key is the index of the value in the source sequence.
            An additional parameter specifies the starting index.
            
Namespace: MoreLinqAssembly: MoreLinq (in MoreLinq.dll) Version: 4.0.0+092a40d82a1b280568ffa006d9a210bdec0792cd
public static IEnumerable<KeyValuePair<int, TSource>> Index<TSource>(
	this IEnumerable<TSource> source,
	int startIndex
)
<ExtensionAttribute>
Public Shared Function Index(Of TSource) ( 
	source As IEnumerable(Of TSource),
	startIndex As Integer
) As IEnumerable(Of KeyValuePair(Of Integer, TSource))
public:
[ExtensionAttribute]
generic<typename TSource>
static IEnumerable<KeyValuePair<int, TSource>>^ Index(
	IEnumerable<TSource>^ source, 
	int startIndex
)
[<ExtensionAttribute>]
static member Index : 
        source : IEnumerable<'TSource> * 
        startIndex : int -> IEnumerable<KeyValuePair<int, 'TSource>> 
- source  IEnumerableTSource
 - The source sequence.
 - startIndex  Int32
 
- TSource
 - Type of elements in source sequence.
 
IEnumerableKeyValuePairInt32, 
TSourceA sequence of 
KeyValuePairTKey, TValue.In Visual Basic and C#, you can call this method as an instance method on any object of type 
IEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see 
Extension Methods (Visual Basic) or 
Extension Methods (C# Programming Guide).
 This operator uses deferred execution and streams its
            results.