Win32Exception Class

 

Throws an exception for a Win32 error code.

Namespace:   System.ComponentModel
Assembly:  System (in System.dll)

System.Object
  System.Exception
    System.SystemException
      System.Runtime.InteropServices.ExternalException
        System.ComponentModel.Win32Exception
          System.Net.HttpListenerException
          System.Net.NetworkInformation.NetworkInformationException
          System.Net.Sockets.SocketException
          System.Net.WebSockets.WebSocketException

[SerializableAttribute]
[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
public class Win32Exception : ExternalException, ISerializable

NameDescription
System_CAPS_pubmethodWin32Exception()

Initializes a new instance of the Win32Exception class with the last Win32 error that occurred.

System_CAPS_pubmethodWin32Exception(Int32)

Initializes a new instance of the Win32Exception class with the specified error.

System_CAPS_pubmethodWin32Exception(Int32, String)

Initializes a new instance of the Win32Exception class with the specified error and the specified detailed description.

System_CAPS_protmethodWin32Exception(SerializationInfo, StreamingContext)

Initializes a new instance of the Win32Exception class with the specified context and the serialization information.

System_CAPS_pubmethodWin32Exception(String)

Initializes a new instance of the Win32Exception class with the specified detailed description.

System_CAPS_pubmethodWin32Exception(String, Exception)

Initializes a new instance of the Win32Exception class with the specified detailed description and the specified exception.

NameDescription
System_CAPS_pubpropertyData

Gets a collection of key/value pairs that provide additional user-defined information about the exception.(Inherited from Exception.)

System_CAPS_pubpropertyErrorCode

Gets the HRESULT of the error.(Inherited from ExternalException.)

System_CAPS_pubpropertyHelpLink

Gets or sets a link to the help file associated with this exception.(Inherited from Exception.)

System_CAPS_pubpropertyHResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.(Inherited from Exception.)

System_CAPS_pubpropertyInnerException

Gets the Exception instance that caused the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyMessage

Gets a message that describes the current exception.(Inherited from Exception.)

System_CAPS_pubpropertyNativeErrorCode

Gets the Win32 error code associated with this exception.

System_CAPS_pubpropertySource

Gets or sets the name of the application or the object that causes the error.(Inherited from Exception.)

System_CAPS_pubpropertyStackTrace

Gets a string representation of the immediate frames on the call stack.(Inherited from Exception.)

System_CAPS_pubpropertyTargetSite

Gets the method that throws the current exception.(Inherited from Exception.)

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetBaseException()

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.(Inherited from Exception.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetObjectData(SerializationInfo, StreamingContext)

Sets the SerializationInfo object with the file name and line number at which this Win32Exception occurred.(Overrides Exception.GetObjectData(SerializationInfo, StreamingContext).)

System_CAPS_pubmethodGetType()

Gets the runtime type of the current instance.(Inherited from Exception.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that contains the HRESULT of the error.(Inherited from ExternalException.)

NameDescription
System_CAPS_proteventSerializeObjectState

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.(Inherited from Exception.)

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" in the Platform SDK documentation at http://msdn.microsoft.com.

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 = 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(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);
    }

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show: