Class TypeExtensions

Various extension methods for type reflection.

Inheritance

Object

TypeExtensions

Namespace: DotNext.Reflection

Assembly: DotNext.dll

Syntax

public static class TypeExtensions : object

Methods

Cast(Type, Object)

Casts an object to the class, value type or interface.

Declaration

public static object Cast(this Type type, object obj)

Parameters

Type	Name	Description
Type	type	The type cast result.
Object	obj	The object to be cast.

Returns

Type	Description
Object	The object after casting, or null if obj is null.

Devirtualize(Type, MethodInfo)

Returns method that overrides the specified method.

Declaration

public static MethodInfo Devirtualize(this Type type, MethodInfo abstractMethod)

Parameters

Type	Name	Description
Type	type	The type that contains overridden method.
MethodInfo	abstractMethod	The abstract method definition.

Returns

Type	Description
MethodInfo	The method that overrides abstractMethod.

GetBaseTypes(Type, Boolean, Boolean)

Returns read-only collection of base types and, optionally, all implemented interfaces.

Declaration

public static IEnumerable<Type> GetBaseTypes(this Type type, bool includeTopLevel = false, bool includeInterfaces = false)

Parameters

Type	Name	Description
Type	type	The type to be discovered.
Boolean	includeTopLevel	true to return type as first element in the collection.
Boolean	includeInterfaces	true to include implemented interfaces; false to return inheritance hierarchy only.

Returns

Type	Description
IEnumerable<Type>	Read-only collection of base types and, optionally, all implemented interfaces.

GetGenericArguments(Type, Type)

Returns actual generic arguments passed into generic type definition implemented by the input type.

Declaration

public static Type[] GetGenericArguments(this Type type, Type genericDefinition)

Parameters

Type	Name	Description
Type	type
Type	genericDefinition

Returns

Type	Description
Type[]

Examples

var elementTypes = typeof(byte[]).IsGenericInstanceOf(typeof(IEnumerable<>));
elementTypes[0] == typeof(byte); //true

GetMethod(Type, String, BindingFlags, Int64, Type[])

Searches for the generic method in the specified type.

Declaration

public static MethodInfo GetMethod(this Type type, string methodName, BindingFlags flags, long genericParamCount, params Type[] parameters)

Parameters

Type	Name	Description
Type	type	The type in which search should be performed.
String	methodName	The name of the method to get.
BindingFlags	flags	A bitmask that specify how the search is conducted.
Int64	genericParamCount	Number of generic parameters in the method signature.
Type[]	parameters	An array representing the number, order, and type of the parameters for the method to get.

Returns

Type	Description
MethodInfo	Search result; or null if search criteria is invalid or method doesn't exist.

Remarks

Element of the array parameters should be null if this parameter of generic type.

GetMethod(Type, String, BindingFlags, Type[])

Searches for the specified method whose parameters match the specified argument types, using the specified binding constraints.

Declaration

public static MethodInfo GetMethod(this Type type, string name, BindingFlags flags, params Type[] parameters)

Parameters

Type	Name	Description
Type	type	The type in which search should be performed.
String	name	The name of the method to get.
BindingFlags	flags	A bitmask that specify how the search is conducted.
Type[]	parameters	An array representing the number, order, and type of the parameters for the method to get.

Returns

Type	Description
MethodInfo	Search result; or null if search criteria is invalid or method doesn't exist.

IsAssignableFromWithoutBoxing(Type, Type)

Indicates that object of one type can be implicitly converted into another without boxing.

Declaration

public static bool IsAssignableFromWithoutBoxing(this Type to, Type from)

Parameters

Type	Name	Description
Type	to	Type of conversion result.
Type	from	The type check.

Returns

Type	Description
Boolean	true if from is implicitly convertible into to without boxing.

Examples

typeof(object).IsAssignableFrom(typeof(int)); //true
typeof(object).IsAssignableFromWithoutBoxing(typeof(int)); //false
typeof(object).IsAssignableFrom(typeof(string));    //true
typeof(object).IsAssignableFromWithoutBoxing(typeof(string));//true

IsGenericInstanceOf(Type, Type)

Determines whether the type is an instance of the specified generic type.

Declaration

public static bool IsGenericInstanceOf(this Type type, Type genericDefinition)

Parameters

Type	Name	Description
Type	type	The type to check.
Type	genericDefinition	Generic type definition.

Returns

Type	Description
Boolean	true, if the type is an instance of the specified generic type; otherwise, false.

Examples

typeof(byte[]).IsGenericInstanceOf(typeof(IEnumerable<>));    //returns true
typeof(List<int>).IsGenericInstanceOf(typeof(List<int>));   //returns true

IsImmutable(Type)

Determines whether the type is read-only (immutable) value type.

Declaration

public static bool IsImmutable(this Type type)

Parameters

Type	Name	Description
Type	type	The type to inspect.

Returns

Type	Description
Boolean	true, if the specified type is immutable value type; otherwise, false.

IsUnmanaged(Type)

Determines whether the type is unmanaged value type.

Declaration

public static bool IsUnmanaged(this Type type)

Parameters

Type	Name	Description
Type	type	The type to inspect.

Returns

Type	Description
Boolean	true, if the specified type is unmanaged value type; otherwise, false.