Exception.HResult プロパティ
アセンブリ: mscorlib (mscorlib.dll 内)

/** @property */ protected int get_HResult () /** @property */ protected void set_HResult (int value)
HRESULT 値。

HRESULT は 32 ビットの値で、重大度コード、機能コード、およびエラー コードの 3 つのフィールドに分けられます。重大度コードは、戻り値が情報、警告、エラーのいずれを表しているかを示します。機能コードは、エラーの原因になったシステムの領域を識別します。エラー コードは、例外を表すために割り当てられた一意の数値です。それぞれの例外は異なる HRESULT に割り当てられます。マネージ コードが例外をスローすると、ランタイムは COM クライアントに HRESULT を渡します。アンマネージ コードがエラーを返すと、HRESULT は例外に変換されてから、ランタイムによってスローされます。

HResult プロパティをコンストラクタに設定する派生 Exception クラスを定義するコード例を次に示します。
' 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() */

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