Question

我只是看不出我在这里做错了什么，因为我已经在后台工作器中实现了一个进度条，它不再只运行一次（在某些情况下，我已经看到在foor循环中编码运行6次）

我的编码： -

My progress bar max value is set to 10.

‘ BGWorker Do Work Event
            For i As Integer = 1 To 2
‘ Run code 1
Next

            For i As Integer = 2 To 3
‘ Run code 2
Next


            For i As Integer = 3 To 4
‘ Run code 3
Next

            For i As Integer = 4 To 5
‘ Run code 4
Next

            For i As Integer = 5 To 6
‘ Run code 5 
Next

            For i As Integer = 6 To 8
‘ Run code 6
Next

            For i As Integer = 8 To 9
‘ Run code 7
Next

‘ BGWorker Progress changed event
            Me.Progressbar1.Value = e.ProgressPercentage
            Me.label1.Text = String.Format("{0} % Completed", e.ProgressPercentage * 10)

我真的很感激任何帮助，因为我不知道为什么我在循环中的编码不应该只运行一次。

Answer 1

调用For - Loop 1 to 2将运行两次。 3 to 4，5 to 6也是如此。

您的原始代码只是：

For i As Integer = 1 To 2
  ‘ Run code 1
Next

For i As Integer = 3 To 4
  ‘ Run code 2
Next

做了同样的事情。

但听起来你根本不需要For - Loops，如果你所做的只是运行一次代码。如果您的后台工作人员有十个步骤，请尝试调用十个更新：

‘ Run code 1
BGWorker.ReportProgress(1)

‘ Run code 2
BGWorker.ReportProgress(2)

‘ Run code 3
BGWorker.ReportProgress(3)

‘ etc

与背景工作者第2部分的进展酒吧

1 个答案: