MissingMemberException Class
The exception that is thrown when there is an attempt to dynamically access a class member that does not exist.
System::Exception
System::SystemException
System::MemberAccessException
System::MissingMemberException
System::MissingFieldException
System::MissingMethodException
Assembly: mscorlib (in mscorlib.dll)
The MissingMemberException type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | MissingMemberException() | Initializes a new instance of the MissingMemberException class. |
![]() ![]() ![]() | MissingMemberException(String) | Initializes a new instance of the MissingMemberException class with a specified error message. |
![]() | MissingMemberException(SerializationInfo, StreamingContext) | Initializes a new instance of the MissingMemberException class with serialized data. |
![]() ![]() ![]() | MissingMemberException(String, Exception) | Initializes a new instance of the MissingMemberException class with a specified error message and a reference to the inner exception that is the root cause of this exception. |
![]() | MissingMemberException(String, String) | Initializes a new instance of the MissingMemberException class with the specified class name and member name. |
| Name | Description | |
|---|---|---|
![]() | Data | Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.) |
![]() | HelpLink | Gets or sets a link to the help file associated with this exception. (Inherited from Exception.) |
![]() ![]() ![]() | HResult | Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.) |
![]() ![]() ![]() | InnerException | Gets the Exception instance that caused the current exception. (Inherited from Exception.) |
![]() ![]() ![]() | Message | Gets the text string showing the class name, the member name, and the signature of the missing member. (Overrides Exception::Message.) In XNA Framework 3.0, this member is inherited from Exception::Message. In Portable Class Library Portable Class Library, this member is inherited from Exception::Message. |
![]() | Source | Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.) |
![]() ![]() ![]() | StackTrace | Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.) |
![]() | TargetSite | Gets the method that throws the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() ![]() | GetBaseException | When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.) |
![]() ![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetObjectData | Sets the SerializationInfo object with the class name, the member name, the signature of the missing member, and additional exception information. (Overrides Exception::GetObjectData(SerializationInfo, StreamingContext).) |
![]() ![]() ![]() | GetType | Gets the runtime type of the current instance. (Inherited from Exception.) In XNA Framework 3.0, this member is inherited from Object::GetType(). In Portable Class Library Portable Class Library, this member is inherited from Object::GetType(). |
![]() ![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() ![]() | ToString | Creates and returns a string representation of the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
![]() | SerializeObjectState | Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
![]() | ClassName | Holds the class name of the missing member. |
![]() | MemberName | Holds the name of the missing member. |
![]() | Signature | Holds the signature of the missing member. |
Normally a compilation error is generated if the code attempts to access a nonexistent member of a class. MissingMemberException is designed to handle cases where a field or a method is deleted or renamed in one assembly and the change is not reflected in a second assembly. At runtime, MissingMemberException will be thrown when the code in the second assembly attempts to access the missing member in the first assembly.
MissingMemberException is the base class for MissingFieldException and MissingMethodException. In general it is better to use one of the derived classes of MissingMemberException to more precisely indicate the exact nature of the error. Throw a MissingMemberException if you are only interested in capturing the general case of a missing member error.
MissingMemberException uses the HRESULT COR_E_MISSINGMEMBER, that has the value 0x80131512.
For a list of initial property values for an instance of MissingMemberException, see the MissingMemberException constructors.
This example shows what happens if you attempt to use reflection to call a method that does not exist and access a field that does not exist. The application recovers by catching the MissingMethodException, MissingFieldException, and MissingMemberException.
using namespace System; using namespace System::Reflection; ref class App { }; int main() { try { // Attempt to call a static DoSomething method defined in the App class. // However, because the App class does not define this method, // a MissingMethodException is thrown. App::typeid->InvokeMember("DoSomething", BindingFlags::Static | BindingFlags::InvokeMethod, nullptr, nullptr, nullptr); } catch (MissingMethodException^ ex) { // Show the user that the DoSomething method cannot be called. Console::WriteLine("Unable to call the DoSomething method: {0}", ex->Message); } try { // Attempt to access a static AField field defined in the App class. // However, because the App class does not define this field, // a MissingFieldException is thrown. App::typeid->InvokeMember("AField", BindingFlags::Static | BindingFlags::SetField, nullptr, nullptr, gcnew array<Object^>{5}); } catch (MissingFieldException^ ex) { // Show the user that the AField field cannot be accessed. Console::WriteLine("Unable to access the AField field: {0}", ex->Message); } try { // Attempt to access a static AnotherField field defined in the App class. // However, because the App class does not define this field, // a MissingFieldException is thrown. App::typeid->InvokeMember("AnotherField", BindingFlags::Static | BindingFlags::GetField, nullptr, nullptr, nullptr); } catch (MissingMemberException^ ex) { // Notice that this code is catching MissingMemberException which is the // base class of MissingMethodException and MissingFieldException. // Show the user that the AnotherField field cannot be accessed. Console::WriteLine("Unable to access the AnotherField field: {0}", ex->Message); } } // This code produces the following output. // // Unable to call the DoSomething method: Method 'App.DoSomething' not found. // Unable to access the AField field: Field 'App.AField' not found. // Unable to access the AnotherField field: Field 'App.AnotherField' not found.
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.







