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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 bool TryGetValue(
	string key,
	out Object value


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<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 null for reference types.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 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.

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