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Type.GetGenericParameterConstraints Method

Returns an array of Type objects that represent the constraints on the current generic type parameter.

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

abstract GetGenericParameterConstraints : unit -> Type[] 
override GetGenericParameterConstraints : unit -> Type[] 

Return Value

Type: System.Type[]
An array of Type objects that represent the constraints on the current generic type parameter.

ExceptionCondition
InvalidOperationException

The current Type object is not a generic type parameter. That is, the IsGenericParameter property returns false.

Each constraint on a generic type parameter is expressed as a Type object. Use the IsClass property to determine whether a constraint is the base class constraint; if the property returns false, the constraint is an interface constraint. If a type parameter has no class constraint and no interface constraints, an empty array is returned.

For a list of the invariant conditions for terms used in generic reflection, see the IsGenericType property remarks.

The following code example defines a generic type Test with two type parameters that have different constraints. When the program executes, the constraints are examined using the GenericParameterAttributes property and the GetGenericParameterConstraints method.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.
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