Win32Exception Class

Definition

Namespace:

System.ComponentModel

Assembly:

Microsoft.Win32.Primitives.dll

Source:

Win32Exception.cs

Throws an exception for a Win32 error code.

public ref class Win32Exception : System::Runtime::InteropServices::ExternalException

public class Win32Exception : System.Runtime.InteropServices.ExternalException

type Win32Exception = class
    inherit ExternalException

Public Class Win32Exception
Inherits ExternalException

Inheritance

Object

Exception

SystemException

ExternalException

Win32Exception

Derived

System.Net.HttpListenerException

System.Net.NetworkInformation.NetworkInformationException

System.Net.Sockets.SocketException

System.Net.WebSockets.WebSocketException

Examples

The following code example shows how to catch a Win32 exception and interpret its content. The example attempts to start a nonexistent executable, which results in a Win32 exception. Upon catching the exception, the example fetches the respective error message, code, and origin of the exception.

try
{
   System::Diagnostics::Process^ myProc = gcnew System::Diagnostics::Process;
   //Attempting to start a non-existing executable
   myProc->StartInfo->FileName = "c:\nonexist.exe";
   //Start the application and assign it to the process component.
   myProc->Start();
}
catch ( Win32Exception^ w ) 
{
   Console::WriteLine( w->Message );
   Console::WriteLine( w->ErrorCode );
   Console::WriteLine( w->NativeErrorCode );
   Console::WriteLine( w->StackTrace );
   Console::WriteLine( w->Source );
   Exception^ e = w->GetBaseException();
   Console::WriteLine( e->Message );
}

try
{
    System.Diagnostics.Process myProc = new();
    myProc.StartInfo.FileName = @"c:\nonexist.exe"; // Attempt to start a non-existent executable
    myProc.Start();
}
catch (Win32Exception w)
{
    Console.WriteLine(w.Message);
    Console.WriteLine(w.ErrorCode.ToString());
    Console.WriteLine(w.NativeErrorCode.ToString());
    Console.WriteLine(w.StackTrace);
    Console.WriteLine(w.Source);
    Exception e = w.GetBaseException();
    Console.WriteLine(e.Message);
}

Try
    Dim myProc As New System.Diagnostics.Process()
    myProc.StartInfo.FileName = "c:\nonexist.exe"  'Attempting to start a non-existing executable
    myProc.Start()    'Start the application and assign it to the process component.    

Catch w As System.ComponentModel.Win32Exception
    Console.WriteLine(w.Message)
    Console.WriteLine(w.ErrorCode.ToString())
    Console.WriteLine(w.NativeErrorCode.ToString())
    Console.WriteLine(w.StackTrace)
    Console.WriteLine(w.Source)
    Dim e As New Exception()
    e = w.GetBaseException()
    Console.WriteLine(e.Message)
End Try

Remarks

Win32 error codes are translated from their numeric representations into a system message when they are displayed. Use NativeErrorCode to access the numeric representation of the error code associated with this exception. For more information about the error codes, see Win32 Error Codes.

Constructors

Win32Exception()	Initializes a new instance of the Win32Exception class with the last Win32 error that occurred.
Win32Exception(Int32, String)	Initializes a new instance of the Win32Exception class with the specified error and the specified detailed description.
Win32Exception(Int32)	Initializes a new instance of the Win32Exception class with the specified error.
Win32Exception(SerializationInfo, StreamingContext)	Obsolete. Initializes a new instance of the Win32Exception class with the specified context and the serialization information.
Win32Exception(String, Exception)	Initializes a new instance of the Win32Exception class with the specified detailed description and the specified exception.
Win32Exception(String)	Initializes a new instance of the Win32Exception class with the specified detailed description.

Properties

Data	Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception)
ErrorCode	Gets the HRESULT of the error. (Inherited from ExternalException)
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)
NativeErrorCode	Gets the Win32 error code associated with this 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. Sets the SerializationInfo object with the file name and line number at which this Win32Exception occurred.
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()	Returns a string that contains the NativeErrorCode, or HResult, or both.

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)