CryptographicUnexpectedOperationException 类

定义

命名空间:

System.Security.Cryptography

程序集:

System.Security.Cryptography.dll

Source:

CryptographicUnexpectedOperationException.cs

当加密操作中出现意外操作时引发的异常。

C#

public class CryptographicUnexpectedOperationException : System.Security.Cryptography.CryptographicException

继承

Object

Exception

SystemException

CryptographicException

CryptographicUnexpectedOperationException

示例

下面的代码示例演示如何使用 类的成员 CryptographicUnexpectedOperationException 。

C#

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.

注解

CryptographicUnexpectedOperationException 使用 HRESULT CORSEC_E_CRYPTO_UNEX_OPER，其值0x80131431。

有关 实例 CryptographicUnexpectedOperationException的初始属性值的列表，请参阅 构造函数。

构造函数

CryptographicUnexpectedOperationException()	使用默认属性初始化 CryptographicUnexpectedOperationException 类的新实例。
CryptographicUnexpectedOperationException(SerializationInfo, StreamingContext)	已过时. 用序列化数据初始化 CryptographicUnexpectedOperationException 类的新实例。
CryptographicUnexpectedOperationException(String)	用指定的错误消息初始化 CryptographicUnexpectedOperationException 类的新实例。
CryptographicUnexpectedOperationException(String, Exception)	使用指定的错误消息和对作为此异常原因的内部异常的引用来初始化 CryptographicUnexpectedOperationException 类的新实例。
CryptographicUnexpectedOperationException(String, String)	以指定格式使用指定的错误消息来初始化 CryptographicUnexpectedOperationException 类的新实例。

属性

Data	获取键/值对的集合，这些键/值对提供有关该异常的其他用户定义信息。 (继承自 Exception)
HelpLink	获取或设置指向与此异常关联的帮助文件链接。 (继承自 Exception)
HResult	获取或设置 HRESULT（一个分配给特定异常的编码数字值）。 (继承自 Exception)
InnerException	获取导致当前异常的 Exception 实例。 (继承自 Exception)
Message	获取描述当前异常的消息。 (继承自 Exception)
Source	获取或设置导致错误的应用程序或对象的名称。 (继承自 Exception)
StackTrace	获取调用堆栈上的即时框架字符串表示形式。 (继承自 Exception)
TargetSite	获取引发当前异常的方法。 (继承自 Exception)

方法

Equals(Object)	确定指定对象是否等于当前对象。 (继承自 Object)
GetBaseException()	当在派生类中重写时，返回 Exception，它是一个或多个并发的异常的根本原因。 (继承自 Exception)
GetHashCode()	作为默认哈希函数。 (继承自 Object)
GetObjectData(SerializationInfo, StreamingContext)	已过时. 当在派生类中重写时，用关于异常的信息设置 SerializationInfo。 (继承自 Exception)
GetType()	获取当前实例的运行时类型。 (继承自 Exception)
MemberwiseClone()	创建当前 Object 的浅表副本。 (继承自 Object)
ToString()	创建并返回当前异常的字符串表示形式。 (继承自 Exception)

事件

SerializeObjectState

已过时. 当异常被序列化用来创建包含有关该异常的徐列出数据的异常状态对象时会出现该问题。 (继承自 Exception)

适用于

另请参阅

• Exception
• 处理和引发异常
• 加密服务