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CryptographicUnexpectedOperationException Class

The exception that is thrown when an unexpected operation occurs during a cryptographic operation.

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

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public class CryptographicUnexpectedOperationException : CryptographicException
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public class CryptographicUnexpectedOperationException extends CryptographicException
SerializableAttribute 
ComVisibleAttribute(true) 
public class CryptographicUnexpectedOperationException extends CryptographicException

CryptographicUnexpectedOperationException uses the HRESULT CORSEC_E_CRYPTO_UNEX_OPER, which has the value 0x80131431.

For a list of initial property values for an instance of CryptographicUnexpectedOperationException, see the constructor.

The following code example demonstrates how to use members of the CryptographicUnexpectedOperationException class.

using System;
using System.Security.Cryptography;
using System.Runtime.Serialization;

class Members
{
    [STAThread]
    static void Main(string[] args)
    {
        Members testRun = new Members();

        testRun.TestConstructors();
        testRun.ShowProperties();

        Console.WriteLine("Sample ended successfully, " +
            " press Enter to continue.");
        Console.ReadLine();
    }

    // Test each public implementation of the
    // CryptographicUnexpectedOperationException constructors.
    private void TestConstructors()
    {
        EmptyConstructor();
        StringConstructor();
        StringExceptionConstructor();
        StringStringConstructor();
    }

    private void EmptyConstructor()
    {
        // Construct a CryptographicUnexpectedOperationException
        // with no parameters.
        CryptographicUnexpectedOperationException cryptographicException =
            new CryptographicUnexpectedOperationException();
        Console.WriteLine("Created an empty " + 
            "CryptographicUnexpectedOperationException.");
    }

    private void StringConstructor()
    {
        // Construct a CryptographicUnexpectedOperationException
        // using a custom error message.
        string errorMessage = ("Unexpected operation exception.");
        CryptographicUnexpectedOperationException cryptographicException =
            new CryptographicUnexpectedOperationException(errorMessage);
        Console.WriteLine("Created a " + 
            "CryptographicUnexpectedOperationException with the following " +
            " error message: " + errorMessage);
    }

    private void StringExceptionConstructor()
    {
        // Construct a CryptographicUnexpectedOperationException using a 
        // custom error message and an inner exception.
        string errorMessage = ("The current operation is not supported.");
        NullReferenceException nullException = new NullReferenceException();
        CryptographicUnexpectedOperationException cryptographicException = 
            new CryptographicUnexpectedOperationException(
            errorMessage, nullException);
        Console.WriteLine("Created a " +
            "CryptographicUnexpectedOperationException with the following" +
            "error message: " + errorMessage + " and inner exception: "
            + nullException.ToString());
    }

    private void StringStringConstructor()
    {
        // Create a CryptographicUnexpectedOperationException using a time
        // format and the current date.
        string dateFormat = "{0:t}";
        string timeStamp = (DateTime.Now.ToString());
        CryptographicUnexpectedOperationException cryptographicException = 
            new CryptographicUnexpectedOperationException(
            dateFormat, timeStamp);
        Console.WriteLine("Created a " + 
            "CryptographicUnexpectedOperationException with (" + dateFormat +
            ") as the format and (" + timeStamp + ") as the message.");
    }

    // Construct an invalid DSACryptoServiceProvider to throw a
    // CryptographicUnexpectedOperationException for introspection.
    private void ShowProperties()
    {
        // Attempting to encode an OID greater than 127 bytes is not supported
        // and will throw an exception.
        string veryLongNumber = "1234567890.1234567890.";
        for (int i=0; i < 4; i++)
        {
            veryLongNumber += veryLongNumber;
        }
        veryLongNumber += "0";
        try 
        {
            byte[] tooLongOID = CryptoConfig.EncodeOID(veryLongNumber);
        }
        catch(CryptographicUnexpectedOperationException ex)
        {
            // Retrieve the link to the Help file for the exception.
            string helpLink = ex.HelpLink;
            
            // Retrieve the exception that caused the current
            // CryptographicUnexpectedOperationException.
            System.Exception innerException = ex.InnerException;
            string innerExceptionMessage = "";
            if (innerException != null)
            {
                innerExceptionMessage = innerException.ToString();
            }

            // Retrieve the message that describes the exception.
            string message = ex.Message;

            // Retrieve the name of the application that caused the exception.
            string exceptionSource = ex.Source;

            // Retrieve the call stack at the time the exception occurred.
            string stackTrace = ex.StackTrace;

            // Retrieve the method that threw the exception.
            System.Reflection.MethodBase targetSite = ex.TargetSite;
            string siteName = targetSite.Name;

            // Retrieve the entire exception as a single string.
            string entireException = ex.ToString();

            // GetObjectData
            setSerializationInfo(ref ex);

            // Get the root exception that caused the current
            // CryptographicUnexpectedOperationException.
            System.Exception baseException = ex.GetBaseException();
            string baseExceptionMessage = "";
            if (baseException != null)
            {
                baseExceptionMessage = baseException.Message;
            }

            Console.WriteLine("Caught an expected exception:");
            Console.WriteLine(entireException + "\n");

            Console.WriteLine("Properties of the exception are as follows:");
            Console.WriteLine("Message: " + message);
            Console.WriteLine("Source: " + exceptionSource);
            Console.WriteLine("Stack trace: " + stackTrace);
            Console.WriteLine("Help link: " + helpLink);
            Console.WriteLine("Target site's name: " + siteName);
            Console.WriteLine("Base exception message: " + 
                baseExceptionMessage);
            Console.WriteLine("Inner exception message: " + 
                innerExceptionMessage);
        }
    }

    private void setSerializationInfo(
        ref CryptographicUnexpectedOperationException ex)
    {
        // Insert information about the exception into a serialized object.
        FormatterConverter formatConverter = new FormatterConverter();
        SerializationInfo serializationInfo =
            new SerializationInfo(ex.GetType(), formatConverter);
        StreamingContext streamingContext =
            new StreamingContext(StreamingContextStates.All);

        ex.GetObjectData(serializationInfo,streamingContext);
    }
}
//
// This sample produces the following output:
//
// Created an empty CryptographicUnexpectedOperationException.
// Created a CryptographicUnexpectedOperationException with the following 
// error message: Unexpected operation exception.
// Created a CryptographicUnexpectedOperationException with the following
// error message: The current operation is not supported. and inner exception:
// System.NullReferenceException: Object reference not set to an instance of
// an object.
// Created a CryptographicUnexpectedOperationException with ({0:t}) as the
// format and (2/24/2004 2:35:22 PM) as the message.
// Caught an expected exception:
// System.Security.Cryptography.CryptographicUnexpectedOperationException: 
// Encoded OID length is too large (greater than 0x7f bytes).
//  at System.Security.Cryptography.CryptoConfig.EncodeOID(String str)
//  at Members.ShowProperties() in c:\consoleapplication1\class1.cs:line 106
// 
// Properties of the exception are as follows:
// Message: Encoded OID length is too large (greater than 0x7f bytes).
// Source: mscorlib
// Stack trace:    at System.Security.Cryptography.CryptoConfig.EncodeOID(
// String str)
//  at Members.ShowProperties() in c:\consoleapplication1\class1.cs:line 106
// Help link:
// Target site's name: EncodeOID
// Base exception message: Encoded OID length is too large (greater than 0x7f
// bytes).
// Inner exception message:
// Sample ended successfully,  press Enter to continue.

System.Object
   System.Exception
     System.SystemException
       System.Security.Cryptography.CryptographicException
        System.Security.Cryptography.CryptographicUnexpectedOperationException

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

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

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