Gets the value from the collection, returning the default value of if the value doesn't exist.

Namespace: DotNetNuke.Collections
Assembly: DotNetNuke (in DotNetNuke.dll)

Syntax

C#
public static T GetValueOrDefault<T>(
	this NameValueCollection collection,
	string key
)
Visual Basic
<ExtensionAttribute> 
Public Shared Function GetValueOrDefault(Of T) ( 
	collection As NameValueCollection,
	key As String
) As T

Parameters

collection
Type: System.Collections.Specialized..::..NameValueCollection
The collection.
key
Type: System..::..String
The key by which to get the value.

Type Parameters

T
The type of the value to retrieve

Return Value

A T instance.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type NameValueCollection. When you use instance method syntax to call this method, omit the first parameter. For more information, see [b8020aae-374d-46a9-bcb7-8cc2390b93b6] or [175ce3ff-9bbf-4e64-8421-faeb81a0bb51].

Exceptions

ExceptionCondition
System..::..InvalidCastException the value is null and T is a value type, or the value does not implement the IConvertible interface and no cast is defined from the value to T
System..::..ArgumentNullExceptioncollection is null
System..::..InvalidOperationExceptioncollection has multiple values for the given key

See Also