# Exception.HResult Vlastnost

## Definice

Získá nebo nastaví hodnotu HRESULT, kódované číselné hodnoty, která je přiřazena konkrétní výjimce.Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

``````protected:
property int HResult { int get(); void set(int value); };``````
``protected int HResult { get; set; }``
``member this.HResult : int with get, set``
``Protected Property HResult As Integer``

#### Hodnota vlastnosti

Hodnota HRESULT.The HRESULT value.

Následující příklad kódu definuje odvozenou `Exception` třídu, která nastavuje vlastnost `HResult` na vlastní hodnotu v jejím konstruktoru.The following code example defines a derived `Exception` class that sets the `HResult` property to a custom value in its constructor.

``````// 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.
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.
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
End Class

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

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()
``````

## Poznámky

HRESULT je hodnota 32 dělená do tří různých polí: kód závažnosti, kód zařízení a kód chyby.HRESULT is a 32-bit value, divided into three different fields: a severity code, a facility code, and an error code. Kód závažnosti označuje, zda vrácená hodnota představuje informace, varování nebo chybu.The severity code indicates whether the return value represents information, warning, or error. Kód zařízení identifikuje oblast systému odpovědnou za chybu.The facility code identifies the area of the system responsible for the error. Kód chyby je jedinečné číslo, které je přiřazeno k reprezentaci výjimky.The error code is a unique number that is assigned to represent the exception. Každá výjimka je namapována na jedinečnou hodnotu HRESULT.Each exception is mapped to a distinct HRESULT. Pokud spravovaný kód vyvolá výjimku, modul runtime předá HRESULT klientovi modelu COM.When managed code throws an exception, the runtime passes the HRESULT to the COM client. Pokud nespravovaný kód vrátí chybu, je hodnota HRESULT převedena na výjimku, která je poté vyvolána modulem runtime.When unmanaged code returns an error, the HRESULT is converted to an exception, which is then thrown by the runtime. Informace o hodnotách HRESULT a jejich odpovídajících .NET Framework výjimkách naleznete v tématu How to: Map HRESULTs and Exceptions.For information about HRESULT values and their corresponding .NET Framework exceptions, see How to: Map HRESULTs and Exceptions. V dokumentaci k Windows najdete seznam hodnot, na které se nejčastěji setkáte.See Common HRESULT Values in the Windows documentation for a list of the values you are most likely to encounter.

Počínaje .NET Framework 4.5.NET Framework 4.5je vlastnost setter pro HResult chráněná, zatímco její metoda getter je veřejná.Starting with the .NET Framework 4.5.NET Framework 4.5, the HResult property's setter is protected, whereas its getter is public. V předchozích verzích .NET Framework jsou chráněny metody getter a setter.In previous versions of the .NET Framework, both getter and setter are protected.