TraceSwitch.TraceWarning 屬性

定義

取得值,指出參數是否允許警告訊息。

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

屬性值

true 若屬性 Level 設為 WarningInfoVerbose;否則, false

範例

以下程式碼範例會建立一個新的 TraceSwitch ,並利用交換器判斷是否要發出錯誤訊息。 參數會在類別層級建立。 如果 MyMethod 屬性設定為 Level 或更新版本,TraceLevel.Warning 會寫入第一個錯誤訊息。 然而,MyMethod當 小LevelTraceLevel.Verbose於 時,不會寫入第二個錯誤訊息。

//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 Warning or higher.
    if (mySwitch.TraceWarning)
        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 Warning or higher.
    If mySwitch.TraceWarning 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

你可以結合 TraceErrorTraceWarningTraceInfoTraceVerboseDebugTrace 和 屬性,以及 和 類別,發出所有具有指定重要性或更高的訊息。 當屬性 Level 設為 TraceLevel.Warning時,會發出警告及錯誤處理訊息。

適用於

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