TypedTableBaseExtensions.Select<TRow,S> Method
Definition
Important
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Projects each element of a TypedTableBase<T> into a new form.
public:
generic <typename TRow, typename S>
where TRow : System::Data::DataRow[System::Runtime::CompilerServices::Extension]
static System::Data::EnumerableRowCollection<S> ^ Select(System::Data::TypedTableBase<TRow> ^ source, Func<TRow, S> ^ selector);
public static System.Data.EnumerableRowCollection<S> Select<TRow,S> (this System.Data.TypedTableBase<TRow> source, Func<TRow,S> selector) where TRow : System.Data.DataRow;
static member Select : System.Data.TypedTableBase<'Row (requires 'Row :> System.Data.DataRow)> * Func<'Row, 'S (requires 'Row :> System.Data.DataRow)> -> System.Data.EnumerableRowCollection<'S> (requires 'Row :> System.Data.DataRow)
<Extension()>
Public Function Select(Of TRow As DataRow, S As DataRow) (source As TypedTableBase(Of TRow), selector As Func(Of TRow, S)) As EnumerableRowCollection(Of S)
Type Parameters
- TRow
The type of the row elements in source
, DataRow.
- S
Parameters
- source
- TypedTableBase<TRow>
A TypedTableBase<T> that contains the DataRow elements to invoke a transformation function upon.
- selector
- Func<TRow,S>
A transformation function to apply to each element.
Returns
An EnumerableRowCollection<TRow> whose elements are the result of invoking the transformation function on each element of source
.
Remarks
This projection method requires the transformation function, selector
, to produce one value for each value in the source sequence, source
. If selector
returns a value that is itself a collection, the consumer must traverse the sub-sequences manually.
Applies to
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