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Select(TRow, S) Method

TypedTableBaseExtensions.Select<TRow, S> Method

Projects each element of a TypedTableBase<T> into a new form.

Namespace:  System.Data
Assembly:  System.Data.DataSetExtensions (in System.Data.DataSetExtensions.dll)

public static EnumerableRowCollection<S> Select<TRow, S>(
	this TypedTableBase<TRow> source,
	Func<TRow, S> selector
)
where TRow : DataRow

Type Parameters

TRow

The type of the row elements in source, DataRow.

S

Parameters

source
Type: System.Data.TypedTableBase<TRow>

A TypedTableBase<T> that contains the DataRow elements to invoke a transformation function upon.

selector
Type: System.Func<TRow, S>

A transformation function to apply to each element.

Return Value

Type: System.Data.EnumerableRowCollection<S>
An EnumerableRowCollection<TRow> whose elements are the result of invoking the transformation function on each element of source.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type TypedTableBase<TRow>. 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 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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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