CryptographicUnexpectedOperationException-Klasse
Die Ausnahme, die beim Auftreten einer unerwarteten Operation während einer kryptographischen Operation ausgelöst wird.
Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Class CryptographicUnexpectedOperationException
Inherits CryptographicException
'Usage
Dim instance As CryptographicUnexpectedOperationException
[SerializableAttribute]
[ComVisibleAttribute(true)]
public class CryptographicUnexpectedOperationException : CryptographicException
[SerializableAttribute]
[ComVisibleAttribute(true)]
public ref class CryptographicUnexpectedOperationException : public CryptographicException
/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public class CryptographicUnexpectedOperationException extends CryptographicException
SerializableAttribute
ComVisibleAttribute(true)
public class CryptographicUnexpectedOperationException extends CryptographicException
Hinweise
CryptographicUnexpectedOperationException verwendet HRESULT CORSEC_E_CRYPTO_UNEX_OPER mit dem Wert 0x80131431.
Eine Liste der anfänglichen Eigenschaftenwerte für eine Instanz von CryptographicUnexpectedOperationException finden Sie unter dem entsprechenden Konstruktor.
Beispiel
Im folgenden Codebeispiel wird die Verwendung von Membern der CryptographicUnexpectedOperationException-Klasse veranschaulicht.
Imports System
Imports System.Security.Cryptography
Imports System.Runtime.Serialization
Public Class Form1
Inherits System.Windows.Forms.Form
' Event handler for Run button.
Private Sub Button1_Click( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
tbxOutput.Cursor = Cursors.WaitCursor
tbxOutput.Text = ""
TestConstructors()
ShowProperties()
' Reset the cursor and conclude application.
tbxOutput.AppendText(vbCrLf + "This sample completed " + _
"successfully; press Exit to continue.")
tbxOutput.Cursor = Cursors.Default
End Sub
' Test each public implementation of the
' CryptographicUnexpectedOperationException constructors.
Private Sub TestConstructors()
EmptyConstructor()
StringConstructor()
StringExceptionConstructor()
StringStringConstructor()
End Sub
Private Sub EmptyConstructor()
' Construct a CryptographicUnexpectedOperationException
' with no parameters.
Dim cryptographicException As _
New CryptographicUnexpectedOperationException
WriteLine("Created an empty " + _
"CryptographicUnexpectedOperationException.")
End Sub
Private Sub StringConstructor()
' Construct a CryptographicUnexpectedOperationException using a custom
' error message.
Dim errorMessage As String = "Unexpected operation exception."
Dim cryptographicException As _
New CryptographicUnexpectedOperationException(errorMessage)
WriteLine("Created a CryptographicUnexpectedOperationException " + _
"with the following error message: " + errorMessage)
End Sub
Private Sub StringExceptionConstructor()
' Construct a CryptographicUnexpectedOperationException using a
' custom error message and an inner exception.
Dim errorMessage As String = "The current operation is not supported."
Dim nullException As New NullReferenceException
Dim cryptographicException As _
New CryptographicUnexpectedOperationException( _
errorMessage, nullException)
Write("Created a CryptographicUnexpectedOperationException ")
Write("with the following error message: " + errorMessage)
WriteLine(" and inner exception: " + nullException.ToString())
End Sub
Private Sub StringStringConstructor()
' Create a CryptographicUnexpectedOperationException using
' a time format and the current date.
Dim dateFormat As String = "{0:t}"
Dim timeStamp As String = DateTime.Now.ToString()
Dim cryptographicException As New _
CryptographicUnexpectedOperationException(dateFormat, timeStamp)
Write("Created a CryptographicUnexpectedOperationException with ")
Write(dateFormat + " as the format and " + timeStamp)
WriteLine(" as the message.")
End Sub
' Construct an invalid DSACryptoServiceProvider to throw a
' CryptographicUnexpectedOperationException for introspection.
Private Sub ShowProperties()
' Attempting to encode an OID greater than 127 bytes is not supported
' and will throw an exception.
Dim veryLongNumber As String = "1234567890.1234567890."
For i As Int16 = 0 To 4 Step 1
veryLongNumber += veryLongNumber
Next
veryLongNumber += "0"
Try
Dim tooLongOID() As Byte
tooLongOID = CryptoConfig.EncodeOID(veryLongNumber)
Catch ex As CryptographicUnexpectedOperationException
' Retrieve the link to the Help file for the exception.
Dim helpLink As String = ex.HelpLink
' Retrieve the exception that caused the current
' CryptographicUnexpectedOperationException.
Dim innerException As System.Exception = ex.InnerException
Dim innerExceptionMessage As String = ""
If (Not innerException Is Nothing) Then
innerExceptionMessage = innerException.ToString()
End If
' Retrieve the message that describes the exception.
Dim message As String = ex.Message
' Retrieve the name of the application that caused the exception.
Dim exceptionSource As String = ex.Source
' Retrieve the call stack at the time the exception occurred.
Dim stackTrace As String = ex.StackTrace
' Retrieve the method that threw the exception.
Dim targetSite As System.Reflection.MethodBase
targetSite = ex.TargetSite
Dim siteName As String = targetSite.Name
' Retrieve the entire exception as a single string.
Dim entireException As String = ex.ToString()
' GetObjectData
setSerializationInfo(ex)
' Get the root exception that caused the current
' CryptographicUnexpectedOperationException.
Dim baseException As System.Exception = ex.GetBaseException()
Dim baseExceptionMessage As String = ""
If (Not baseException Is Nothing) Then
baseExceptionMessage = baseException.Message
End If
WriteLine("Caught an expected exception:")
WriteLine(entireException)
WriteLine(vbCrLf + "Properties of the exception are as follows:")
WriteLine("Message: " + message)
WriteLine("Source: " + exceptionSource)
WriteLine("Stack trace: " + stackTrace)
WriteLine("Help link: " + helpLink)
WriteLine("Target site's name: " + siteName)
WriteLine("Base exception message: " + baseExceptionMessage)
WriteLine("Inner exception message: " + innerExceptionMessage)
End Try
End Sub
Private Sub setSerializationInfo( _
ByRef ex As CryptographicUnexpectedOperationException)
' Insert information about the exception into a serialized object.
Dim formatConverter As New FormatterConverter
Dim serializationInfo As _
New SerializationInfo(ex.GetType(), formatConverter)
Dim streamingContext As _
New StreamingContext(StreamingContextStates.All)
ex.GetObjectData(serializationInfo, streamingContext)
End Sub
' Write specified message to the output textbox.
Private Sub Write(ByVal message As String)
tbxOutput.AppendText(message)
End Sub
' Write specified message with a carriage return to the output textbox.
Private Sub WriteLine(ByVal message As String)
tbxOutput.AppendText(message + vbCrLf)
End Sub
' Event handler for Exit button.
Private Sub Button2_Click( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button2.Click
Application.Exit()
End Sub
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents Panel2 As System.Windows.Forms.Panel
Friend WithEvents Panel1 As System.Windows.Forms.Panel
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents Button2 As System.Windows.Forms.Button
Friend WithEvents tbxOutput As System.Windows.Forms.RichTextBox
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.Panel2 = New System.Windows.Forms.Panel
Me.Button1 = New System.Windows.Forms.Button
Me.Button2 = New System.Windows.Forms.Button
Me.Panel1 = New System.Windows.Forms.Panel
Me.tbxOutput = New System.Windows.Forms.RichTextBox
Me.Panel2.SuspendLayout()
Me.Panel1.SuspendLayout()
Me.SuspendLayout()
'
'Panel2
'
Me.Panel2.Controls.Add(Me.Button1)
Me.Panel2.Controls.Add(Me.Button2)
Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom
Me.Panel2.DockPadding.All = 20
Me.Panel2.Location = New System.Drawing.Point(0, 320)
Me.Panel2.Name = "Panel2"
Me.Panel2.Size = New System.Drawing.Size(616, 64)
Me.Panel2.TabIndex = 1
'
'Button1
'
Me.Button1.Dock = System.Windows.Forms.DockStyle.Right
Me.Button1.Font = New System.Drawing.Font( _
"Microsoft Sans Serif", 9.0!, _
System.Drawing.FontStyle.Regular, _
System.Drawing.GraphicsUnit.Point, _
CType(0, Byte))
Me.Button1.Location = New System.Drawing.Point(446, 20)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(75, 24)
Me.Button1.TabIndex = 2
Me.Button1.Text = "&Run"
'
'Button2
'
Me.Button2.Dock = System.Windows.Forms.DockStyle.Right
Me.Button2.Font = New System.Drawing.Font("Microsoft Sans Serif", _
9.0!, _
System.Drawing.FontStyle.Regular, _
System.Drawing.GraphicsUnit.Point, _
CType(0, Byte))
Me.Button2.Location = New System.Drawing.Point(521, 20)
Me.Button2.Name = "Button2"
Me.Button2.Size = New System.Drawing.Size(75, 24)
Me.Button2.TabIndex = 3
Me.Button2.Text = "E&xit"
'
'Panel1
'
Me.Panel1.Controls.Add(Me.tbxOutput)
Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill
Me.Panel1.DockPadding.All = 20
Me.Panel1.Location = New System.Drawing.Point(0, 0)
Me.Panel1.Name = "Panel1"
Me.Panel1.Size = New System.Drawing.Size(616, 320)
Me.Panel1.TabIndex = 2
'
'tbxOutput
'
Me.tbxOutput.AccessibleDescription = _
"Displays output from application."
Me.tbxOutput.AccessibleName = "Output textbox."
Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill
Me.tbxOutput.Location = New System.Drawing.Point(20, 20)
Me.tbxOutput.Name = "tbxOutput"
Me.tbxOutput.Size = New System.Drawing.Size(576, 280)
Me.tbxOutput.TabIndex = 1
Me.tbxOutput.Text = "Click the Run button to run the application."
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15)
Me.ClientSize = New System.Drawing.Size(616, 384)
Me.Controls.Add(Me.Panel1)
Me.Controls.Add(Me.Panel2)
Me.Name = "Form1"
Me.Text = "CryptographicUnexpectedOperationException"
Me.Panel2.ResumeLayout(False)
Me.Panel1.ResumeLayout(False)
Me.ResumeLayout(False)
End Sub
#End Region
End Class
'
' 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 2:29:32 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 WindowsApplication1.Form1.ShowProperties() in
' C:\WindowsApplication1\Form1.vb:line 103
'
' 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 WindowsApplication1.Form1.ShowProperties() in
' C:\WindowsApplication1\Form1.vb:line 103
' Help link:
' Target site's name: EncodeOID
' Base exception message: Encoded OID length is too large (greater than 0x7f
' bytes).
' Inner exception message:
'
' This sample completed successfully; press Exit to continue.
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.
Vererbungshierarchie
System.Object
System.Exception
System.SystemException
System.Security.Cryptography.CryptographicException
System.Security.Cryptography.CryptographicUnexpectedOperationException
Threadsicherheit
Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
Plattformen
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
.NET Compact Framework
Unterstützt in: 2.0
Siehe auch
Referenz
CryptographicUnexpectedOperationException-Member
System.Security.Cryptography-Namespace
Exception
Weitere Ressourcen
Behandeln und Auslösen von Ausnahmen
Kryptografische Dienste