Exception.HResult-Eigenschaft
Ruft HRESULT ab oder legt HRESULT fest. Dies ist ein codierter Wert, der einer bestimmten Ausnahme zugeordnet ist.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Protected Property HResult As Integer
'Usage
Dim value As Integer
value = Me.HResult
Me.HResult = value
protected int HResult { get; set; }
protected:
property int HResult {
int get ();
void set (int value);
}
/** @property */
protected int get_HResult ()
/** @property */
protected void set_HResult (int value)
protected function get HResult () : int
protected function set HResult (value : int)
Eigenschaftenwert
Der HRESULT-Wert.
Hinweise
HRESULT ist ein 32-Bit-Wert, der in drei Felder unterteilt ist: Schweregradcode, Bereichscode und Fehlercode. Der Schweregradcode gibt an, ob der Rückgabewert eine Information, eine Warnung oder einen Fehler darstellt. Der Bereichscode gibt den Systembereich an, in dem der Fehler ausgelöst wurde. Der Fehlercode ist eine eindeutige Zahl, die zur Darstellung der Ausnahme zugewiesen wird. Jede Ausnahme ist einem eindeutigen HRESULT zugeordnet. Wenn verwalteter Code eine Ausnahme auslöst, übergibt die Common Language Runtime HRESULT an den COM-Client. Wenn nicht verwalteter Code einen Fehler zurückgibt, wird HRESULT in eine Ausnahme konvertiert, die dann von der Common Language Runtime ausgelöst wird.
Beispiel
Im folgenden Codebeispiel wird eine abgeleitete Exception-Klasse definiert, in deren Konstruktor die HResult-Eigenschaft festgelegt wird.
' Example for the Exception.HResult property.
Imports System
Imports Microsoft.VisualBasic
Namespace NDP_UE_VB
' Create the derived exception class.
Class SecondLevelException
Inherits Exception
Private Const SecondLevelHResult As Integer = &H81234567
' Set HResult for this exception, and include it in
' the exception message.
Public Sub New(message As String, inner As Exception)
MyBase.New( String.Format( "(HRESULT:0x{1:X8}) {0}", _
message, SecondLevelHResult ), inner )
HResult = SecondLevelHResult
End Sub ' New
End Class ' SecondLevelException
Module HResultDemo
Sub Main()
Console.WriteLine( _
"This example of Exception.HResult " & _
"generates the following output." & vbCrLf )
' This function forces a division by 0 and throws
' a second exception.
Try
Try
Dim zero As Integer = 0
Dim ecks As Integer = 1 \ zero
Catch ex As Exception
Throw New SecondLevelException( _
"Forced a division by 0 and threw " & _
"a second exception.", ex )
End Try
Catch ex As Exception
Console.WriteLine( ex.ToString( ) )
End Try
End Sub ' Main
End Module ' HResultDemo
End Namespace ' NDP_UE_VB
' This example of Exception.HResult generates the following output.
'
' NDP_UE_VB.SecondLevelException: (HRESULT:0x81234567) Forced a division by 0 a
' nd threw a second exception. ---> System.DivideByZeroException: Attempted to
' divide by zero.
' at NDP_UE_VB.HResultDemo.Main()
' --- End of inner exception stack trace ---
' at NDP_UE_VB.HResultDemo.Main()
// Example for the Exception.HResult property.
using System;
namespace NDP_UE_CS
{
// Create the derived exception class.
class SecondLevelException : Exception
{
const int SecondLevelHResult = unchecked( (int)0x81234567 );
// Set HResult for this exception, and include it in
// the exception message.
public SecondLevelException( string message, Exception inner ) :
base( string.Format( "(HRESULT:0x{1:X8}) {0}",
message, SecondLevelHResult ), inner )
{
HResult = SecondLevelHResult;
}
}
class HResultDemo
{
public static void Main()
{
Console.WriteLine(
"This example of Exception.HResult " +
"generates the following output.\n" );
// This function forces a division by 0 and throws
// a second exception.
try
{
try
{
int zero = 0;
int ecks = 1 / zero;
}
catch( Exception ex )
{
throw new SecondLevelException(
"Forced a division by 0 and threw " +
"a second exception.", ex );
}
}
catch( Exception ex )
{
Console.WriteLine( ex.ToString( ) );
}
}
}
}
/*
This example of Exception.HResult generates the following output.
NDP_UE_CS.SecondLevelException: (HRESULT:0x81234567) Forced a division by 0 and
threw a second exception. ---> System.DivideByZeroException: Attempted to divi
de by zero.
at NDP_UE_CS.HResultDemo.Main()
--- End of inner exception stack trace ---
at NDP_UE_CS.HResultDemo.Main()
*/
// Example for the Exception::HResult property.
using namespace System;
namespace NDP_UE_CPP
{
// Create the derived exception class.
ref class SecondLevelException: public Exception
{
private:
static int SecondLevelHResult = (int)0x81234567;
public:
// Set HResult for this exception, and include it in
// the exception message.
SecondLevelException( String^ message, Exception^ inner )
: Exception( String::Format( "(HRESULT:0x{1:X8}) {0}", message, SecondLevelHResult ), inner )
{
HResult = SecondLevelHResult;
}
};
// This function forces a division by 0 and throws
// a second exception.
void DivideBy0()
{
try
{
try
{
int zero = 0;
int ecks = 1 / zero;
}
catch ( Exception^ ex )
{
throw gcnew SecondLevelException( "Forced a division by 0 and threw "
"a second exception.",ex );
}
}
catch ( Exception^ ex )
{
Console::WriteLine( ex->ToString() );
}
}
}
int main()
{
Console::WriteLine( "This example of Exception::HResult "
"generates the following output.\n" );
NDP_UE_CPP::DivideBy0();
}
/*
This example of Exception::HResult generates the following output.
NDP_UE_CPP.SecondLevelException: (HRESULT:0x81234567) Forced a division by 0 an
d threw a second exception. ---> System.DivideByZeroException: Attempted to div
ide by zero.
at NDP_UE_CPP.DivideBy0()
--- End of inner exception stack trace ---
at NDP_UE_CPP.DivideBy0()
*/
// Example for the Exception.HResult property.
package NDP_UE_JSL ;
import System.* ;
// Create the derived exception class.
class SecondLevelException extends System.Exception
{
private int SecondLevelHResult = (int)(0x81234567);
// Set HResult for this exception, and include it in
// the exception message.
public SecondLevelException(String message, System.Exception inner)
{
super(String.Format("(HRESULT:0x{1:X8}) {0}", message,
((System.Int32)(int)(0x81234567)).ToString("X8")), inner);
set_HResult(SecondLevelHResult);
} //SecondLevelException
} //SecondLevelException
class HResultDemo
{
public static void main(String[] args)
{
Console.WriteLine(("This example of Exception.HResult "
+ "generates the following output.\n"));
// This function forces a division by 0 and throws
// a second exception.
try {
try {
int zero = 0;
int ecks = 1 / zero;
}
catch (System.Exception ex) {
throw new SecondLevelException("Forced a division by 0 and "
+ "threw a second exception.", ex);
}
}
catch (System.Exception ex) {
Console.WriteLine(ex.toString());
}
} //main
} //HResultDemo
/*
This example of Exception.HResult generates the following output.
NDP_UE_JSL.SecondLevelException: (HRESULT:0x81234567) Forced a division by 0
and threw a second exception. ---> System.DivideByZeroException: Attempted to
divi de by zero.
at NDP_UE_JSL.HResultDemo.Main()
--- End of inner exception stack trace ---
at NDP_UE_JSL.HResultDemo.Main()
*/
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