TraceSwitch.TraceError 屬性

定義

命名空間:

System.Diagnostics

組件:

System.Diagnostics.TraceSource.dll

來源:

TraceSwitch.cs

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

Boolean

如果 Level 屬性設定為 Error、Warning、Info 或 Verbose，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.Verbose，MyMethod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 Debug 和 Trace 類別使用TraceError、 TraceInfoTraceWarning和 TraceVerbose 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。

另請參閱

• TraceSwitch
• Switch
• TraceLevel
• Debug
• Trace