EventAttribute.Task 属性

定义

命名空间:

System.Diagnostics.Tracing

程序集:

System.Diagnostics.Tracing.dll

Source:

EventSource.cs

获取或设置事件的任务。

public:
 property System::Diagnostics::Tracing::EventTask Task { System::Diagnostics::Tracing::EventTask get(); void set(System::Diagnostics::Tracing::EventTask value); };

public System.Diagnostics.Tracing.EventTask Task { get; set; }

member this.Task : System.Diagnostics.Tracing.EventTask with get, set

Public Property Task As EventTask

属性值

EventTask

事件的任务。

示例

以下示例演示如何使用 Task 属性定义事件任务。 此代码示例是为 EventSource 类提供的一个更大示例的一部分。

public static class Tasks
{
    public const EventTask Page = (EventTask)1;
    public const EventTask DBQuery = (EventTask)2;
}

Public Class Tasks
    Public Const Page As EventTask = CType(1, EventTask)
    Public Const DBQuery As EventTask = CType(1, EventTask)
End Class

[Event(4, Opcode = EventOpcode.Stop, Task = Tasks.Page, Keywords = Keywords.Page, Level = EventLevel.Informational)]
public void PageStop(int ID) { if (IsEnabled()) WriteEvent(4, ID); }

<[Event](4, Opcode:=EventOpcode.Stop, Task:=Tasks.Page, Keywords:=Keywords.Page, Level:=EventLevel.Informational)> _
Public Sub PageStop(ByVal ID As Integer)
    If IsEnabled() Then
        WriteEvent(4, ID)
    End If
End Sub

[Event(5, Opcode = EventOpcode.Start, Task = Tasks.DBQuery, Keywords = Keywords.DataBase, Level = EventLevel.Informational)]
public void DBQueryStart(string sqlQuery) { WriteEvent(5, sqlQuery); }

<[Event](5, Opcode:=EventOpcode.Start, Task:=Tasks.DBQuery, Keywords:=Keywords.DataBase, Level:=EventLevel.Informational)> _
Public Sub DBQueryStart(ByVal sqlQuery As String)
    WriteEvent(5, sqlQuery)
End Sub