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RouteValueDictionary.TryGetValue Method

Gets a value that indicates whether a value is associated with the specified key.

Namespace:  System.Web.Routing
Assembly:  System.Web (in System.Web.dll)

Public Function TryGetValue ( _
	key As String, _
	<OutAttribute> ByRef value As Object _
) As Boolean


Type: System.String
The key of the value to get.
Type: System.Object%
When this method returns, contains the value that is associated with the specified key, if the key is found; otherwise, contains the appropriate default value for the type of the value parameter that you provided as an out parameter. This parameter is passed uninitialized.

Return Value

Type: System.Boolean
true if the dictionary contains an element that has the specified key; otherwise, false.


IDictionary(Of TKey, TValue).TryGetValue(TKey, TValue)

This method combines the functionality of the ContainsKey method and the Item property.

If the key is not found, the value parameter is assigned the appropriate default value for the type, such as 0 (zero) for integer types, false for Boolean types, and Nothing for reference types.

.NET Framework

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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