VB.NET Service.OnStart（）從未調用

Question

我正在使用vb.net來創建Windows服務，在該服務上，我試圖在OnStart（）函數上記錄一條消息，說明其狀態，但是它表明該函數未被調用。 這是完整的項目，下面是目標服務代碼：

Imports System.IO

Public Class FneishSQLBackupServicev2

    Dim backupTaken As Boolean = False

    Protected Overrides Sub OnStart(ByVal args() As String)
        WriteToFile("Sql automated backup service started")
        Try
            Timer1.Start()
        Catch ex As Exception
            WriteToFile(ex.StackTrace)
        End Try
    End Sub

    Protected Overrides Sub OnStop()
        WriteToFile("Sql automated backup service stopped")
    End Sub

    Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        WriteToFile("timer entered")
        If Date.Now.Hour = My.Settings.AutoBackupTime Then
            If backupTaken = False Then
                backupTaken = True
                TakeBackup()
            End If
        Else
            backupTaken = False
        End If
    End Sub

    Public Shared Sub WriteToFile(Message As String)
        Try
            Dim path As String = System.IO.Path.GetTempPath() + "\ServiceLog"

            If Directory.Exists(path) = False Then
                Directory.CreateDirectory(path)
            End If

            Dim filepath As String = System.IO.Path.GetTempPath() & "\ServiceLog\Log_" & DateTime.Now.Date.ToShortDateString.Replace("/".ToCharArray.GetValue(0), "_".ToCharArray.GetValue(0)) & ".txt"

            Dim log As System.IO.StreamWriter

            If File.Exists(filepath) = False Then
                log = File.CreateText(filepath)
            Else
                log = My.Computer.FileSystem.OpenTextFileWriter(filepath, True)
            End If

            Message = Date.Now.ToLocalTime & vbNewLine & Message & vbNewLine
            log.WriteLine(Message)
            log.Close()
        Catch ex As Exception

        End Try
    End Sub

End Class

有什么幫助嗎？ 謝謝

Answer 1

在使用EventLog進行更多搜索和調試之后，我發現它已成功啟動，但是問題出在寫入另一個文件夾的WriteToFile函數中，因為System.IO.Path.GetTempPath()返回的是"C:\\Windows\\Temp"而不是服務調用時為"C:\\users\\myuser\\appdata\\local\\temp" 。