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Showing content from https://docs.microsoft.com/en-us/dotnet/api/system.componentmodel.win32exception below:

Win32Exception Class (System.ComponentModel) | Microsoft Learn

Throws an exception for a Win32 error code.

public ref class Win32Exception : Exception

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

public class Win32Exception : Exception

public class Win32Exception : System.Runtime.InteropServices.ExternalException

[System.Serializable]
public class Win32Exception : System.Runtime.InteropServices.ExternalException

type Win32Exception = class
    inherit Exception

type Win32Exception = class
    inherit ExternalException

type Win32Exception = class
    inherit ExternalException
    interface ISerializable

[<System.Serializable>]
type Win32Exception = class
    inherit ExternalException
    interface ISerializable

Public Class Win32Exception
Inherits Exception

Public Class Win32Exception
Inherits ExternalException

Inheritance

Inheritance

Derived

Attributes

Implements

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

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.

Gets a collection of key/value pairs that provide additional user-defined information about the exception.

Gets the HRESULT of the error.

Gets or sets a link to the help file associated with this exception.

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

Gets the Exception instance that caused the current exception.

Gets a message that describes the current exception.

Gets the Win32 error code associated with this exception.

Gets or sets the name of the application or the object that causes the error.

Gets a string representation of the immediate frames on the call stack.

Gets the method that throws the current exception.

Obsolete.

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

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