TypedTableBaseExtensions.Select<TRow,S> Method

Reference

Definition

Namespace:: System.Data

Assembly:: System.Data.Common.dll

Assembly:: System.Data.DataSetExtensions.dll

Assembly:: netstandard.dll

Package:: System.Data.DataSetExtensions v4.5.0

Source:: TypedTableBaseExtensions.cs

Source:: TypedTableBaseExtensions.cs

Source:: TypedTableBaseExtensions.cs

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

EnumerableRowCollection<S>

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

Delen via