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TraceSwitch.TraceError 屬性

定義

取得值,表示此參數是否允許錯誤處理訊息。

public:
 property bool TraceError { bool get(); };
public bool TraceError { get; }
member this.TraceError : bool
Public ReadOnly Property TraceError As Boolean

屬性值

如果 Level 屬性設定為 ErrorWarningInfoVerbose,則為 true,否則為 false

範例

下列程式代碼範例會建立新的 TraceSwitch ,並使用 參數來判斷是否要發出錯誤訊息。 參數會在類別層級建立。 MyMethod如果屬性設定為 TraceLevel.Error 或更新版本,則會Level寫入第一個錯誤訊息。 不過,如果 Level 小於 TraceLevel.VerboseMyMethod則不會寫入第二個錯誤訊息。

   // Class-level declaration.
   /* Create a TraceSwitch to use in the entire application.*/
private:
   static TraceSwitch^ mySwitch = gcnew TraceSwitch( "General", "Entire Application" );

public:
   static void MyMethod()
   {
      // Write the message if the TraceSwitch level is set to Error or higher.
      if ( mySwitch->TraceError )
         Console::WriteLine( "My error message." );
      
      // Write the message if the TraceSwitch level is set to Verbose.
      if ( mySwitch->TraceVerbose )
         Console::WriteLine( "My second error message." );
   }

   static void main()
   {
      // Run the method that prints error messages based on the switch level.
      MyMethod();
   }
//Class-level declaration.
/* Create a TraceSwitch to use in the entire application.*/
static TraceSwitch mySwitch = new TraceSwitch("General", "Entire Application");

static public void MyMethod()
{
    // Write the message if the TraceSwitch level is set to Error or higher.
    if (mySwitch.TraceError)
        Console.WriteLine("My error message.");

    // Write the message if the TraceSwitch level is set to Verbose.
    if (mySwitch.TraceVerbose)
        Console.WriteLine("My second error message.");
}

public static void Main(string[] args)
{
    // Run the method that prints error messages based on the switch level.
    MyMethod();
}
' Class-level declaration.
' Create a TraceSwitch to use in the entire application. 
Private Shared mySwitch As New TraceSwitch("General", "Entire Application")    

Public Shared Sub MyMethod()
    ' Write the message if the TraceSwitch level is set to Error or higher.
    If mySwitch.TraceError Then
        Console.WriteLine("My error message.")
    End If 
    ' Write the message if the TraceSwitch level is set to Verbose.
    If mySwitch.TraceVerbose Then
        Console.WriteLine("My second error message.")
    End If
End Sub

Public Shared Sub Main()
    ' Run the method that prints error messages based on the switch level.
    MyMethod()
End Sub

備註

您可以搭配 DebugTrace 類別使用TraceErrorTraceInfoTraceWarningTraceVerbose 屬性,以發出具有指定重要性或更高的所有訊息。 Level當屬性設定為最高重要性時, TraceLevel.ErrorError 只會發出錯誤處理訊息。

適用於

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