Information
Switch
Switch
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

TypeAccessException Class

.NET Framework (current version)
 

The exception that is thrown when a method attempts to use a type that it does not have access to.

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

System::Object
  System::Exception
    System::SystemException
      System::TypeLoadException
        System::TypeAccessException

C#
C++
F#
VB
Copy 
[SerializableAttribute]
public ref class TypeAccessException : TypeLoadException

NameDescription
System_CAPS_pubmethodTypeAccessException()

Initializes a new instance of the TypeAccessException class with a system-supplied message that describes the error.

System_CAPS_protmethodTypeAccessException(SerializationInfo^, StreamingContext)

Initializes a new instance of the TypeAccessException class with serialized data.

System_CAPS_pubmethodTypeAccessException(String^)

Initializes a new instance of the TypeAccessException class with a specified message that describes the error.

System_CAPS_pubmethodTypeAccessException(String^, Exception^)

Initializes a new instance of the TypeAccessException class with a specified error message and a reference to the inner exception that is the cause of this exception.

NameDescription
System_CAPS_pubpropertyData

Gets a collection of key/value pairs that provide additional user-defined information about the exception.(Inherited from Exception.)

System_CAPS_pubpropertyHelpLink

Gets or sets a link to the help file associated with this exception.(Inherited from Exception.)

System_CAPS_pubpropertyHResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.(Inherited from Exception.)

System_CAPS_pubpropertyInnerException

Gets the Exception instance that caused the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyMessage

Gets the error message for this exception.(Inherited from TypeLoadException.)

System_CAPS_pubpropertySource

Gets or sets the name of the application or the object that causes the error.(Inherited from Exception.)

System_CAPS_pubpropertyStackTrace

Gets a string representation of the immediate frames on the call stack.(Inherited from Exception.)

System_CAPS_pubpropertyTargetSite

Gets the method that throws the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyTypeName

Gets the fully qualified name of the type that causes the exception.(Inherited from TypeLoadException.)

NameDescription
System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetBaseException()

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.(Inherited from Exception.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetObjectData(SerializationInfo^, StreamingContext)

Sets the SerializationInfo object with the class name, method name, resource ID, and additional exception information.(Inherited from TypeLoadException.)

System_CAPS_pubmethodGetType()

Gets the runtime type of the current instance.(Inherited from Exception.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Creates and returns a string representation of the current exception.(Inherited from Exception.)

NameDescription
System_CAPS_proteventSerializeObjectState

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.(Inherited from Exception.)

TypeAccessException is thrown when a method attempts to cast an object to a type that is not accessible from the method. For example, an anonymously hosted dynamic method cannot access a security-critical type because the method is transparent. If the method contains a OpCodes::Castclass instruction that casts an object to a security-critical type, or to a generic type that has a security-critical type as one of its type parameters, TypeAccessException is thrown by the JIT compiler.

Similarly, TypeAccessException is thrown for a dynamic method that uses an internal type from another assembly. A method might not have access to its containing type, its return type, or one of its parameter types.

Apps compiled by using the .NET Native tool chain may throw a exception at runtime. is an internal-only exception type derived from TypeAccessException. The exception indicates that metadata needed for the successful execution of an app is not present at runtime. You should not use a try/catch block to handle the exception. Instead, you should determine what metadata is missing and modify your app's to ensure that it is present at runtime.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show: