NotImplementedException Class

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

NotImplementedException.cs

The exception that is thrown when a requested method or operation is not implemented.

public ref class NotImplementedException : SystemException

public class NotImplementedException : SystemException

type NotImplementedException = class
    inherit SystemException

Public Class NotImplementedException
Inherits SystemException

Inheritance

Object

Exception

SystemException

NotImplementedException

Examples

The following example throws this exception for a method that has not been developed.

static void Main(string[] args)
{
    try
    {
        FutureFeature();
    }
    catch (NotImplementedException notImp)
    {
        Console.WriteLine(notImp.Message);
    }
}

static void FutureFeature()
{
    // Not developed yet.
    throw new NotImplementedException();
}

open System

let futureFeature () =
    // Not developed yet.
    raise (NotImplementedException())

[<EntryPoint>]
let main _ =
    try
        futureFeature ()
    with :? NotImplementedException as notImp ->
        printfn $"{notImp.Message}"
    0

Sub Main()
    Try
        FutureFeature()
    Catch NotImp As NotImplementedException
        Console.WriteLine(NotImp.Message)
    End Try


End Sub

Sub FutureFeature()
    ' not developed yet.
    Throw New NotImplementedException()
End Sub

Remarks

For more information about this API, see Supplemental API remarks for NotImplementedException.

Constructors

NotImplementedException()	Initializes a new instance of the NotImplementedException class with default properties.
NotImplementedException(SerializationInfo, StreamingContext)	Obsolete. Initializes a new instance of the NotImplementedException class with serialized data.
NotImplementedException(String, Exception)	Initializes a new instance of the NotImplementedException class with a specified error message and a reference to the inner exception that is the cause of this exception.
NotImplementedException(String)	Initializes a new instance of the NotImplementedException class with a specified error message.

Properties

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 a message that describes the current exception. (Inherited from Exception)
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)

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (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 the default hash function. (Inherited from Object)
GetObjectData(SerializationInfo, StreamingContext)	Obsolete. When overridden in a derived class, sets the SerializationInfo with information about the exception. (Inherited from Exception)
GetType()	Gets the runtime type of the current instance. (Inherited from Exception)
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)

Events

SerializeObjectState

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

See also

• Exception
• NotSupportedException