CryptographicUnexpectedOperationException Class
.NET Framework 3.0
The exception that is thrown when an unexpected operation occurs during a cryptographic operation.
Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)
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
Not applicable.
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
System.Exception
System.SystemException
System.Security.Cryptography.CryptographicException
System.Security.Cryptography.CryptographicUnexpectedOperationException
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The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
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