StackFrame Costruttori

Definizione

Spazio dei nomi:

System.Diagnostics

Assembly:

System.Diagnostics.StackTrace.dll

Inizializza una nuova istanza della classe StackFrame.

Overload

StackFrame()	Inizializza una nuova istanza della classe StackFrame.
StackFrame(Int32)	Inizializza una nuova istanza della classe StackFrame che corrisponde a un frame sopra lo stack frame corrente.
StackFrame(Boolean)	Inizializza una nuova istanza della classe StackFrame acquisendo eventualmente informazioni sull'origine.
StackFrame(String, Int32)	Inizializza una nuova istanza della classe StackFrame che contiene solo il nome file e il numero di riga indicati.
StackFrame(Int32, Boolean)	Inizializza una nuova istanza della classe StackFrame che corrisponde a un frame sopra lo stack frame corrente, acquisendo facoltativamente informazioni sull'origine.
StackFrame(String, Int32, Int32)	Inizializza una nuova istanza della classe StackFrame che contiene solo il nome file, il numero di riga e il numero di colonna indicati.

StackFrame()

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame.

public:
 StackFrame();

public StackFrame ();

Public Sub New ()

StackFrame(Int32)

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame che corrisponde a un frame sopra lo stack frame corrente.

public:
 StackFrame(int skipFrames);

public StackFrame (int skipFrames);

new System.Diagnostics.StackFrame : int -> System.Diagnostics.StackFrame

Public Sub New (skipFrames As Integer)

Parametri

skipFrames

Int32

Numero di frame fino allo stack da ignorare.

Esempio

Nell'esempio seguente viene illustrato l'uso del StackFrame(Int32) costruttore . Questo esempio di codice fa parte di un esempio più ampio fornito per la StackFrame classe .

void InternalMethod()
{
   try
   {
      ClassLevel2^ nestedClass = gcnew ClassLevel2;
      nestedClass->Level2Method();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( " InternalMethod exception handler" );
      
      // Build a stack trace from one frame, skipping the
      // current frame and using the next frame.  By
      // default, file and line information are not displayed.
      StackTrace^ st = gcnew StackTrace( gcnew StackFrame( 1 ) );
      Console::WriteLine( " Stack trace for next level frame: {0}", st->ToString() );
      Console::WriteLine( " Stack frame for next level: " );
      Console::WriteLine( "   {0}", st->GetFrame( 0 )->ToString() );
      Console::WriteLine( " Line Number: {0}", st->GetFrame( 0 )->GetFileLineNumber().ToString() );
      Console::WriteLine();
      Console::WriteLine( "   ... throwing exception to next level ..." );
      Console::WriteLine( "-------------------------------------------------\n" );
      throw e;
   }

}

public void InternalMethod()
{
   try
   {
      ClassLevel2 nestedClass = new ClassLevel2();
      nestedClass.Level2Method();
   }
   catch (Exception e)
   {
      Console.WriteLine(" InternalMethod exception handler");

      // Build a stack trace from one frame, skipping the
      // current frame and using the next frame.  By
      // default, file and line information are not displayed.
      StackTrace st = new StackTrace(new StackFrame(1));
      Console.WriteLine(" Stack trace for next level frame: {0}",
         st.ToString());
      Console.WriteLine(" Stack frame for next level: ");
      Console.WriteLine("   {0}", st.GetFrame(0).ToString());

      Console.WriteLine(" Line Number: {0}",
         st.GetFrame(0).GetFileLineNumber().ToString());

      Console.WriteLine();
      Console.WriteLine("   ... throwing exception to next level ...");
      Console.WriteLine("-------------------------------------------------\n");
      throw e;
   }
}

Public Sub InternalMethod()
   Try
      Dim nestedClass As New ClassLevel2
      nestedClass.Level2Method()
   Catch e As Exception
      Console.WriteLine(" InternalMethod exception handler")
      
      ' Build a stack trace from one frame, skipping the 
      ' current frame and using the next frame.  By default,
      ' file and line information are not displayed.
      Dim st As New StackTrace(New StackFrame(1))
      Console.WriteLine(" Stack trace for next level frame: {0}", _
         st.ToString())
      Console.WriteLine(" Stack frame for next level: ")
      Console.WriteLine("   {0}", st.GetFrame(0).ToString())
      
      Console.WriteLine(" Line Number: {0}", _
         st.GetFrame(0).GetFileLineNumber().ToString())
      
      Console.WriteLine()
      Console.WriteLine("   ... throwing exception to next level ...")
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
      Throw e
   End Try
End Sub

StackFrame(Boolean)

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame acquisendo eventualmente informazioni sull'origine.

public:
 StackFrame(bool needFileInfo);

public StackFrame (bool needFileInfo);

new System.Diagnostics.StackFrame : bool -> System.Diagnostics.StackFrame

Public Sub New (needFileInfo As Boolean)

Parametri

needFileInfo

Boolean

true per acquisire il nome file, il numero della riga e il numero della colonna dello stack frame; in caso contrario, false.

Esempio

Nell'esempio seguente viene illustrato l'uso del StackFrame(Boolean) costruttore . Questo esempio di codice fa parte di un esempio più ampio fornito per la StackFrame classe .

[STAThread]
static void Main()
{
   ClassLevel1 ^ mainClass = gcnew ClassLevel1;
   try
   {
      mainClass->InternalMethod();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( " Main method exception handler" );
      
      // Display file and line information, if available.
      StackTrace^ st = gcnew StackTrace( gcnew StackFrame( true ) );
      Console::WriteLine( " Stack trace for current level: {0}", st->ToString() );
      Console::WriteLine( " File: {0}", st->GetFrame( 0 )->GetFileName() );
      Console::WriteLine( " Line Number: {0}", st->GetFrame( 0 )->GetFileLineNumber().ToString() );
      Console::WriteLine();
      Console::WriteLine( "-------------------------------------------------\n" );
   }

}

[STAThread]
static void Main()
 {
     ClassLevel1 mainClass = new ClassLevel1();

     try {
         mainClass.InternalMethod();
     }
     catch (Exception) {
        Console.WriteLine(" Main method exception handler");

        // Display file and line information, if available.
        StackTrace st = new StackTrace(new StackFrame(true));
        Console.WriteLine(" Stack trace for current level: {0}",
            st.ToString());
        Console.WriteLine(" File: {0}",
           st.GetFrame(0).GetFileName());
        Console.WriteLine(" Line Number: {0}",
            st.GetFrame(0).GetFileLineNumber().ToString());

        Console.WriteLine();
        Console.WriteLine("-------------------------------------------------\n");
     }
 }

<STAThread()>  _
Shared Sub Main()
   Dim mainClass As New ClassLevel1
   
   Try
      mainClass.InternalMethod()
   Catch
      Console.WriteLine(" Main method exception handler")
      
      ' Display file and line information, if available.
      Dim st As New StackTrace(New StackFrame(True))
      Console.WriteLine(" Stack trace for current level: {0}", _
         st.ToString())
      Console.WriteLine(" File: {0}", _
         st.GetFrame(0).GetFileName())
      Console.WriteLine(" Line Number: {0}", _
         st.GetFrame(0).GetFileLineNumber().ToString())
      
      Console.WriteLine()
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
   End Try
End Sub

StackFrame(String, Int32)

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame che contiene solo il nome file e il numero di riga indicati.

public:
 StackFrame(System::String ^ fileName, int lineNumber);

public StackFrame (string? fileName, int lineNumber);

new System.Diagnostics.StackFrame : string * int -> System.Diagnostics.StackFrame

Public Sub New (fileName As String, lineNumber As Integer)

Parametri

fileName

String

Nome file.

lineNumber

Int32

Numero della riga nel file specificato.

Esempio

Nell'esempio seguente viene illustrato l'uso del StackFrame(String, Int32) costruttore . Questo esempio di codice fa parte di un esempio più ampio fornito per la StackFrame classe .

void Level3Method()
{
   try
   {
      ClassLevel4^ nestedClass = gcnew ClassLevel4;
      nestedClass->Level4Method();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( " Level3Method exception handler" );
      
      // Build a stack trace from a dummy stack frame.
      // Explicitly specify the source file name and line number.
      StackTrace^ st = gcnew StackTrace( gcnew StackFrame( "source.cs",60 ) );
      Console::WriteLine( " Stack trace with dummy stack frame: {0}", st->ToString() );
      for ( int i = 0; i < st->FrameCount; i++ )
      {
         
         // Display the stack frame properties.
         StackFrame^ sf = st->GetFrame( i );
         Console::WriteLine( " File: {0}", sf->GetFileName() );
         Console::WriteLine( " Line Number: {0}", sf->GetFileLineNumber().ToString() );
         
         // Note that the column number defaults to zero
         // when not initialized.
         Console::WriteLine( " Column Number: {0}", sf->GetFileColumnNumber().ToString() );
         Console::WriteLine( " Intermediate Language Offset: {0}", sf->GetILOffset().ToString() );
         Console::WriteLine( " Native Offset: {0}", sf->GetNativeOffset().ToString() );
         

      }
      Console::WriteLine();
      Console::WriteLine( "   ... throwing exception to next level ..." );
      Console::WriteLine( "-------------------------------------------------\n" );
      throw e;
   }

}

public void Level3Method()
{
   try
   {
      ClassLevel4 nestedClass = new ClassLevel4();
      nestedClass.Level4Method();
   }
   catch (Exception e)
   {
      Console.WriteLine(" Level3Method exception handler");

      // Build a stack trace from a dummy stack frame.
      // Explicitly specify the source file name and
      // line number.
      StackTrace st = new StackTrace(new StackFrame("source.cs", 60));
      Console.WriteLine(" Stack trace with dummy stack frame: {0}",
                  st.ToString());
      for(int i =0; i< st.FrameCount; i++ )
      {
         // Display the stack frame properties.
         StackFrame sf = st.GetFrame(i);
         Console.WriteLine(" File: {0}", sf.GetFileName());
         Console.WriteLine(" Line Number: {0}",
            sf.GetFileLineNumber());
         // Note that the column number defaults to zero
         // when not initialized.
         Console.WriteLine(" Column Number: {0}",
            sf.GetFileColumnNumber());
         if (sf.GetILOffset() != StackFrame.OFFSET_UNKNOWN)
         {
            Console.WriteLine(" Intermediate Language Offset: {0}",
               sf.GetILOffset());
         }
         if (sf.GetNativeOffset() != StackFrame.OFFSET_UNKNOWN)
         {
            Console.WriteLine(" Native Offset: {0}",
               sf.GetNativeOffset());
         }
      }
      Console.WriteLine();
      Console.WriteLine("   ... throwing exception to next level ...");
      Console.WriteLine("-------------------------------------------------\n");
      throw e;
   }
}

Public Sub Level3Method()
   Try
      Dim nestedClass As New ClassLevel4()
      nestedClass.Level4Method()
   Catch e As Exception
      Console.WriteLine(" Level3Method exception handler")
      
      ' Build a stack trace from a dummy stack frame.
      ' Explicitly specify the source file name and line number.
      Dim st As New StackTrace(New StackFrame("source.cs", 60))
      Console.WriteLine(" Stack trace with dummy stack frame: {0}", _
         st.ToString())
      Dim i As Integer
      For i = 0 To st.FrameCount - 1
         ' Display the stack frame properties.
         Dim sf As StackFrame = st.GetFrame(i)
         Console.WriteLine(" File: {0}", sf.GetFileName())
         Console.WriteLine(" Line Number: {0}", _
            sf.GetFileLineNumber())
         ' The column number defaults to zero when not initialized.
         Console.WriteLine(" Column Number: {0}", _
            sf.GetFileColumnNumber())
         If sf.GetILOffset <> StackFrame.OFFSET_UNKNOWN
            Console.WriteLine(" Intermediate Language Offset: {0}", _
                sf.GetILOffset())
         End If
         If sf.GetNativeOffset <> StackFrame.OFFSET_UNKNOWN
           Console.WriteLine(" Native Offset: {0}", _
               sf.GetNativeOffset())
         End If
      Next i 
      Console.WriteLine()
      Console.WriteLine("   ... throwing exception to next level ...")
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
      Throw e
   End Try
End Sub

Commenti

Usare questo costruttore quando non si vuole usare la logica di mapping delle linee del debugger.

StackFrame(Int32, Boolean)

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame che corrisponde a un frame sopra lo stack frame corrente, acquisendo facoltativamente informazioni sull'origine.

public:
 StackFrame(int skipFrames, bool needFileInfo);

public StackFrame (int skipFrames, bool needFileInfo);

new System.Diagnostics.StackFrame : int * bool -> System.Diagnostics.StackFrame

Public Sub New (skipFrames As Integer, needFileInfo As Boolean)

Parametri

skipFrames

Int32

Numero di frame fino allo stack da ignorare.

needFileInfo

Boolean

true per acquisire il nome file, il numero della riga e il numero della colonna dello stack frame; in caso contrario, false.

Esempio

Nell'esempio seguente viene illustrato l'uso del StackFrame(Int32, Boolean) costruttore . Questo esempio di codice fa parte di un esempio più ampio fornito per la StackFrame classe .

void Level2Method()
{
   try
   {
      ClassLevel3^ nestedClass = gcnew ClassLevel3;
      nestedClass->Level3Method();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( " Level2Method exception handler" );
      
      // Display the full call stack at this level.
      StackTrace^ st1 = gcnew StackTrace( true );
      Console::WriteLine( " Stack trace for this level: {0}", st1->ToString() );
      
      // Build a stack trace from one frame, skipping the
      // current frame and using the next frame.
      StackTrace^ st2 = gcnew StackTrace( gcnew StackFrame( 1,true ) );
      Console::WriteLine( " Stack trace built with next level frame: {0}", st2->ToString() );
      
      // Build a stack trace skipping the current frame, and
      // including all the other frames.
      StackTrace^ st3 = gcnew StackTrace( 1,true );
      Console::WriteLine( " Stack trace built from the next level up: {0}", st3->ToString() );
      Console::WriteLine();
      Console::WriteLine( "   ... throwing exception to next level ..." );
      Console::WriteLine( "-------------------------------------------------\n" );
      throw e;
   }

}

public void Level2Method()
{
   try
   {
      ClassLevel3 nestedClass = new ClassLevel3();
      nestedClass.Level3Method();
   }
   catch (Exception e)
   {
      Console.WriteLine(" Level2Method exception handler");

      // Display the full call stack at this level.
      StackTrace st1 = new StackTrace(true);
      Console.WriteLine(" Stack trace for this level: {0}",
         st1.ToString());

      // Build a stack trace from one frame, skipping the current
      // frame and using the next frame.
      StackTrace st2 = new StackTrace(new StackFrame(1, true));
      Console.WriteLine(" Stack trace built with next level frame: {0}",
         st2.ToString());

      // Build a stack trace skipping the current frame, and
      // including all the other frames.
      StackTrace st3 = new StackTrace(1, true);
      Console.WriteLine(" Stack trace built from the next level up: {0}",
         st3.ToString());

      Console.WriteLine();
      Console.WriteLine("   ... throwing exception to next level ...");
      Console.WriteLine("-------------------------------------------------\n");
      throw e;
   }
}

Public Sub Level2Method()
   Try
      Dim nestedClass As New ClassLevel3
      nestedClass.Level3Method()
   
   Catch e As Exception
      Console.WriteLine(" Level2Method exception handler")
      
      ' Display the full call stack at this level.
      Dim st1 As New StackTrace(True)
      Console.WriteLine(" Stack trace for this level: {0}", _
         st1.ToString())
      
      ' Build a stack trace from one frame, skipping the current
      ' frame and using the next frame.
      Dim st2 As New StackTrace(New StackFrame(1, True))
      Console.WriteLine(" Stack trace built with next level frame: {0}", _
          st2.ToString())
      
      ' Build a stack trace skipping the current frame, and
      ' including all the other frames.
      Dim st3 As New StackTrace(1, True)
      Console.WriteLine(" Stack trace built from the next level up: {0}", _
          st3.ToString())
      
      Console.WriteLine()
      Console.WriteLine("   ... throwing exception to next level ...")
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
      Throw e
   End Try
End Sub

StackFrame(String, Int32, Int32)

Source:

StackFrame.cs

Inizializza una nuova istanza della classe StackFrame che contiene solo il nome file, il numero di riga e il numero di colonna indicati.

public:
 StackFrame(System::String ^ fileName, int lineNumber, int colNumber);

public StackFrame (string? fileName, int lineNumber, int colNumber);

new System.Diagnostics.StackFrame : string * int * int -> System.Diagnostics.StackFrame

Public Sub New (fileName As String, lineNumber As Integer, colNumber As Integer)

Parametri

fileName

String

Nome file.

lineNumber

Int32

Numero della riga nel file specificato.

colNumber

Int32

Numero della colonna nel file specificato.

Esempio

Nell'esempio seguente viene illustrato l'uso del StackFrame costruttore . Questo esempio di codice fa parte di un esempio più ampio fornito per la StackFrame classe .

try
{
   ClassLevel5^ nestedClass = gcnew ClassLevel5;
   nestedClass->Level5Method();
}
catch ( Exception^ e ) 
{
   Console::WriteLine( " Level4Method exception handler" );
   
   // Build a stack trace from a dummy stack frame.
   // Explicitly specify the source file name, line number
   // and column number.
   StackTrace^ st = gcnew StackTrace( gcnew StackFrame( "source.cs",79,24 ) );
   Console::WriteLine( " Stack trace with dummy stack frame: {0}", st->ToString() );
   
   // Access the StackFrames explicitly to display the file
   // name, line number and column number properties.
   // StackTrace.ToString only includes the method name. 
   for ( int i = 0; i < st->FrameCount; i++ )
   {
      StackFrame^ sf = st->GetFrame( i );
      Console::WriteLine( " File: {0}", sf->GetFileName() );
      Console::WriteLine( " Line Number: {0}", sf->GetFileLineNumber().ToString() );
      Console::WriteLine( " Column Number: {0}", sf->GetFileColumnNumber().ToString() );

   }
   Console::WriteLine();
   Console::WriteLine( "   ... throwing exception to next level ..." );
   Console::WriteLine( "-------------------------------------------------\n" );
   throw e;
}

try
{
   ClassLevel5 nestedClass = new ClassLevel5();
   nestedClass.Level5Method();
}
catch (Exception e)
{
   Console.WriteLine(" Level4Method exception handler");

   // Build a stack trace from a dummy stack frame.
   // Explicitly specify the source file name, line number
   // and column number.
   StackTrace st = new StackTrace(new StackFrame("source.cs", 79, 24));
   Console.WriteLine(" Stack trace with dummy stack frame: {0}",
                  st.ToString());

   // Access the StackFrames explicitly to display the file
   // name, line number and column number properties.
   // StackTrace.ToString only includes the method name.
   for(int i =0; i< st.FrameCount; i++ )
   {
      StackFrame sf = st.GetFrame(i);
      Console.WriteLine(" File: {0}", sf.GetFileName());
      Console.WriteLine(" Line Number: {0}",
         sf.GetFileLineNumber());
      Console.WriteLine(" Column Number: {0}",
         sf.GetFileColumnNumber());
   }
   Console.WriteLine();
   Console.WriteLine("   ... throwing exception to next level ...");
   Console.WriteLine("-------------------------------------------------\n");
   throw e;
}

   Try
      Dim [nestedClass] As New ClassLevel5()
      [nestedClass].Level5Method()
   Catch e As Exception
      Console.WriteLine(" Level4Method exception handler")
      
      ' Build a stack trace from a dummy stack frame.
      ' Explicitly specify the source file name, line number
      ' and column number.
      Dim st As New StackTrace(New StackFrame("source.cs", 79, 24))
      Console.WriteLine(" Stack trace with dummy stack frame: {0}", _
         st.ToString())
      
      ' Access the StackFrames explicitly to display the file
      ' name, line number and column number properties.
      ' StackTrace.ToString only includes the method name. 
      Dim i As Integer
      For i = 0 To st.FrameCount - 1
         Dim sf As StackFrame = st.GetFrame(i)
         Console.WriteLine(" File: {0}", sf.GetFileName())
         Console.WriteLine(" Line Number: {0}", _
            sf.GetFileLineNumber())
         Console.WriteLine(" Column Number: {0}", _
            sf.GetFileColumnNumber())
      Next i
      Console.WriteLine()
      Console.WriteLine("   ... throwing exception to next level ...")
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
      Throw e
   End Try
End Sub

Commenti

Usare questo costruttore quando non si vuole usare la logica di mapping delle linee del debugger.