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String::Concat<T> Method (IEnumerable<T>)

Concatenates the members of an IEnumerable<T> implementation.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[ComVisibleAttribute(false)]
public:
generic<typename T>
static String^ Concat(
	IEnumerable<T>^ values
)

Type Parameters

T

The type of the members of values.

Parameters

values
Type: System.Collections.Generic::IEnumerable<T>

A collection object that implements the IEnumerable<T> interface.

Return Value

Type: System::String
The concatenated members in values.

ExceptionCondition
ArgumentNullException

values is nullptr.

The method concatenates each object in values; it does not add any delimiters.

An Empty string is used in place of any null argument.

Concat<T>(IEnumerable<T>) is a convenience method that lets you concatenate each element in an IEnumerable<T> collection without first converting the elements to strings. It is particularly useful with Language-Integrated Query (LINQ) query expressions, as the example illustrates. The string representation of each object in the IEnumerable<T> collection is derived by calling that object's ToString method.

The following example defines a very simple Animal class that contains the name of an animal and the order to which it belongs. It then defines a List<T> object to contain a number of Animal objects. The Enumerable::Where extension method is called to extract the Animal objects whose Order property equals "Rodent". The result is passed to the Concat<T>(IEnumerable<T>) method and displayed to the console.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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