This documentation is archived and is not being maintained.

XamlType Constructor (String, String, IList<XamlType>, XamlSchemaContext)

Initializes a new instance of the XamlType class based on the XAML namespace and a string name for the type. This constructor is exclusively for analysis and XAML-node recording of type usages that are known to not have backing in the supporting type system and XAML schema context.

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

public XamlType(
	string unknownTypeNamespace,
	string unknownTypeName,
	IList<XamlType> typeArguments,
	XamlSchemaContext schemaContext


Type: System.String
The XAML namespace for the type, as a string.
Type: System.String
The name of the type in the provided unknownTypeNamespace XAML namespace.
Type: System.Collections.Generic.IList<XamlType>
The type arguments for a XamlType that represents a generic type. Can be (and often is) null, which indicates that the represented type is not a generic type.
Type: System.Xaml.XamlSchemaContext
XAML schema context for XAML readers or XAML writers.


One or more of unknownTypeNamespace, unknownTypeName, or schemaContext are null.

Use this constructor only for "unknown" types where a XAML type that maps to an underlying type system is unavailable. This constructor might not produce a result where XamlType.IsUnknown is true. Instead, the default reflector logic reports the underlying type as XamlLanguage.Object. However, this behavior can change because of the LookupIsUnknown override.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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.