# C1.DataCollection.C1SelectDataCollection-2.-ctor ## Content

C1SelectDataCollection Constructor

C1SelectDataCollection(IEnumerable, Func<int, S, T>)

Initializes a new instance of the C1SelectDataCollection<S, T> class.

Declaration
public C1SelectDataCollection(IEnumerable source, Func<int, S, T> select)
Public Sub New(source As IEnumerable, [select] As Func(Of Integer, S, T))
Parameters
Type Name Description
IEnumerable source

The source.
Func<int, S, T> select

Select function which converts a source item into an item of this collection.

C1SelectDataCollection(IEnumerable, Func<IReadOnlyList<S>, int, T>, Func<T, S>?)

Initializes a new instance of the C1SelectDataCollection<S, T> class.

Declaration
public C1SelectDataCollection(IEnumerable source, Func<IReadOnlyList<S>, int, T> select, Func<T, S>? selectBack = null)
Public Sub New(source As IEnumerable, [select] As Func(Of IReadOnlyList(Of S), Integer, T), Optional selectBack As Func(Of T, S) = Nothing)
Parameters
Type Name Description
IEnumerable source

The source.
Func<IReadOnlyList<S>, int, T> select

Select function which converts a source item into an item of this collection.
Func<T, S> selectBack

Function that gives the source item from the collection item. Used to insert and replace operations.

C1SelectDataCollection(IEnumerable)

Initializes a new instance of the C1SelectDataCollection<S, T> class.

Declaration
protected C1SelectDataCollection(IEnumerable source)
Protected Sub New(source As IEnumerable)
Parameters
Type Name Description
IEnumerable source

The source.