StackTrace.FrameCount 屬性

定義

命名空間:

System.Diagnostics

組件:

System.Diagnostics.StackTrace.dll

來源:

StackTrace.cs

取得堆疊追蹤中的框架數。

public:
 virtual property int FrameCount { int get(); };

public virtual int FrameCount { get; }

member this.FrameCount : int

Public Overridable ReadOnly Property FrameCount As Integer

屬性值

Int32

堆疊追蹤裡的框架數。

範例

下列程式代碼範例會顯示堆疊追蹤中的第一個和最後一個函數調用。

void Level5Method()
{
   try
   {
      ClassLevel6^ nestedClass = gcnew ClassLevel6;
      nestedClass->Level6Method();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( " Level5Method exception handler" );
      StackTrace^ st = gcnew StackTrace;
      
      // Display the most recent function call.
      StackFrame^ sf = st->GetFrame( 0 );
      Console::WriteLine();
      Console::WriteLine( "  Exception in method: " );
      Console::WriteLine( "      {0}", sf->GetMethod() );
      if ( st->FrameCount > 1 )
      {
         
         // Display the highest-level function call
         // in the trace.
         sf = st->GetFrame( st->FrameCount - 1 );
         Console::WriteLine( "  Original function call at top of call stack):" );
         Console::WriteLine( "      {0}", sf->GetMethod() );
      }
      Console::WriteLine();
      Console::WriteLine( "   ... throwing exception to next level ..." );
      Console::WriteLine( "-------------------------------------------------\n" );
      throw e;
   }

}

public void Level5Method()
{
   try
   {
      ClassLevel6 nestedClass = new ClassLevel6();
      nestedClass.Level6Method();
   }
   catch (Exception e)
   {
      Console.WriteLine(" Level5Method exception handler");

      StackTrace st = new StackTrace();

      // Display the most recent function call.
      StackFrame sf = st.GetFrame(0);
      Console.WriteLine();
      Console.WriteLine("  Exception in method: ");
      Console.WriteLine("      {0}", sf.GetMethod());

      if (st.FrameCount >1)
      {
         // Display the highest-level function call
         // in the trace.
         sf = st.GetFrame(st.FrameCount-1);
         Console.WriteLine("  Original function call at top of call stack):");
         Console.WriteLine("      {0}", sf.GetMethod());
      }

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

Public Sub Level5Method()
   Try
      Dim nestedClass As New ClassLevel6()
      nestedClass.Level6Method()
   Catch e As Exception
      Console.WriteLine(" Level5Method exception handler")
      
      Dim st As New StackTrace()
      
      ' Display the most recent function call.
      Dim sf As StackFrame = st.GetFrame(0)
      Console.WriteLine()
      Console.WriteLine("  Exception in method: ")
      Console.WriteLine("      {0}", sf.GetMethod())
      
      If st.FrameCount > 1 Then
         ' Display the highest-level function call in the trace.
         sf = st.GetFrame((st.FrameCount - 1))
         Console.WriteLine("  Original function call at top of call stack):")
         Console.WriteLine("      {0}", sf.GetMethod())
      End If
      
      Console.WriteLine()
      Console.WriteLine("   ... throwing exception to next level ...")
      Console.WriteLine("-------------------------------------------------")
      Console.WriteLine()
      Throw e
   End Try
End Sub