Export (0) Print
Expand All

NameValueCollection::Add Method (String, String)

Adds an entry with the specified name and value to the NameValueCollection.

Namespace:  System.Collections.Specialized
Assembly:  System (in System.dll)

public:
virtual void Add(
	String^ name, 
	String^ value
)

Parameters

name
Type: System::String

The String key of the entry to add. The key can be nullptr.

value
Type: System::String

The String value of the entry to add. The value can be nullptr.

ExceptionCondition
NotSupportedException

The collection is read-only.

If the specified key already exists in the target NameValueCollection instance, the specified value is added to the existing comma-separated list of values in the form "value1,value2,value3". The values are associated with the same key in the target NameValueCollection instance.

If Count already equals the capacity, the capacity of the NameValueCollection is increased by automatically reallocating the internal array, and the existing elements are copied to the new array before the new element is added.

If Count is less than the capacity, this method is an O(1) operation. If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is Count.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Show:
© 2014 Microsoft