异步CTP新V3中的VB.Net收益 [英] VB.Net yield in async CTP new V3

问题描述

好的，我现在距离完成使该程序开始工作的目标还有3个错误，但是我正在使用的功能是这样的..

OK I am now 3 errors away from completing my goal of getting this program to work but the function I am using goes like this..

Public Iterator Function _matches(ByVal path As String) As IEnumerable(Of FileInfo)
            Dim findData As New Win32.FindData()
            Dim fileName As String

            Using handle As Win32.SafeFindHandle = Win32.SafeNativeMethods.FindFirstFile(path.Combine(path, "*"), findData)
                If Not handle.IsInvalid Then
                    Do
                        fileName = findData.fileName

                        If String.IsNullOrEmpty(fileName) Then
                            Continue Do
                        End If
                        If String.Equals(fileName, ".", StringComparison.Ordinal) Then
                            Continue Do
                        End If
                        If String.Equals(fileName, "..", StringComparison.Ordinal) Then
                            Continue Do
                        End If

                        ' iff directory, dive into it
                        If 0 <> (CInt(FileAttributes.Directory) And findData.fileAttributes) Then
                            If m_includeSubDirs Then
                                For Each fi As FileInfo In _matches(path.Combine(path, fileName))
                                    Yield Async(fi)
                                Next fi
                            End If
                        Else
                            For Each fileSpec As Regex In m_fileSpecs
                                If fileSpec.IsMatch(fileName) Then
                                    Yield New FileInfo(path.Combine(path, fileName))
                                    Exit For
                                End If
                            Next fileSpec
                        End If
                    Loop While Win32.SafeNativeMethods.FindNextFile(handle, findData)
                End If
            End Using
        End Function
    End Class

Microsoft已在异步迭代器中发布了新的yield，但是由于某些原因，它在3个地方给我带来了问题，而在使用"Path.Combine"指令的地方就给了我问题.....

听到的是我要通过此函数修复的确切行:

Microsoft has released the new yield in async iterator but it is for some reason giving me problems in 3 places giving Me problems where ever the instruction " Path.Combine " is used.....

Hear is the exact lines I am trying to fix from this Function:

(1).  Using handle As Win32.SafeFindHandle = Win32.SafeNativeMethods.FindFirstFile(path.Combine(path, "*"), findData)

(2).  For Each fi As FileInfo In _matches(path.Combine(path, fileName))

(3). Yield New FileInfo(path.Combine(path, fileName))

我希望我已经提供了有关我的问题的足够信息，因为我非常需要它来解决它.提前非常感谢大家:)

I hope I have given enough Information about my problem as I badly need it to work Thank you all very much in advance :)

推荐答案

对于Path错误，我认为问题在于您的函数接受一个path 参数，该方法实际上需要使用System.IO命名空间中的Path 函数，并且使用了错误的函数.

将path.combine完全限定为System.IO.Path.Combine，这应该可以解决该问题.

For the Path error, I think the problem lies in the fact that your function accepts a path parameter, the method is actually needing to using the Path function from the System.IO namespace and is using the wrong one.

Fully qualify the path.combine to System.IO.Path.Combine and that should sort that problem.

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