VB.NET中字符串路径的排序列表
我想对表示路径的字符串列表进行排序。排序结果将具有层次顺序 我的意思是:对于每个目录路径,我想在第一时间列出该路径中的所有文件(字母顺序与否无关紧要)。然后,将列出每个子目录路径。对于每个子目录,我希望所有文件。。。等等 以下是一个例子: (之前) (之后) 我尝试了许多解决方案,比如带有自定义IComparable函数的Array.Sort() 你知道吗?非常感谢 编辑:这是我的IComparable方法VB.NET中字符串路径的排序列表,vb.net,sorting,path,Vb.net,Sorting,Path,我想对表示路径的字符串列表进行排序。排序结果将具有层次顺序 我的意思是:对于每个目录路径,我想在第一时间列出该路径中的所有文件(字母顺序与否无关紧要)。然后,将列出每个子目录路径。对于每个子目录,我希望所有文件。。。等等 以下是一个例子: (之前) (之后) 我尝试了许多解决方案,比如带有自定义IComparable函数的Array.Sort() 你知道吗?非常感谢 编辑:这是我的IComparable方法 zipEntries.Sort(AddressOf compareZipEntryFil
zipEntries.Sort(AddressOf compareZipEntryFilenames)
Private Function compareZipEntryFilenames(ByVal x As Object, ByVal y As Object) As Integer
Dim one As String = CType(x, ZipEntry).FileName
Dim two As String = CType(y, ZipEntry).FileName
If Path.GetDirectoryName(one) = Path.GetDirectoryName(two) Then
Return String.Compare(one, two)
Else
Select Regex.Matches(one, "/").Count.CompareTo(Regex.Matches(two, "/").Count)
Case -1 'one has less / than two; so one then two
Return -1
Case 1 'one has more / than two; so two then one
Return 1
Case Else ' = 0, same number of /; so alphabetical sorting
Return String.Compare(one, two)
End Select
End If
End Function
将下面的插入到进行排序的类中,然后使用
zipEntries.sort(新的PathComparer)
事实证明,这很简单:
Private Function compareZipEntryFilenames(ByVal x As ZipEntry, ByVal y As ZipEntry) As Integer
Dim res As Integer = String.Compare(Path.GetDirectoryName(x.FileName), Path.GetDirectoryName(y.FileName))
If res = 0 Then
Return String.Compare(x.FileName, y.FileName)
Else
Return res
End If
End Function
请发布您编写的自定义IComparable方法。我认为这是正确的方法。看起来您的函数应该可以工作-但是,它没有“实现”IComparable.CompareTo.Nope。问题是,在最后一步,在确定嵌套级别之后,应该比较目录,而不是文件名。看看我的答案。另外,您不必实现接口,还有其他重载。是的!你太棒了,你刚刚解决了我的问题!非常感谢,有件事我不明白。PathSeparator返回“;”c--我想您是用它来计算“/”,而不是“;”。所以,字符串中永远不会有“;”。哎哟。它之所以有效,是因为它有一个bug。修复错误会破坏它。伟大的我将发布固定版本。我认为
Uri.Compare
使用String.Compare
是有原因的。。。原因是斜杠比任何字母都小。试试这个版本。有了清晰的想法,我们得到了清晰的代码。比较DirectoryName和FileName是最简单的方法。为什么?为什么我以前不这么想?!您的解决方案非常完美。这是将IComparable链接到Sort()方法的另一种方法。因为我不想添加类,所以我决定在我的项目类中创建一个函数。行为是一样的。整洁-我还没有遇到排序的比较(T)变体!
zipEntries.Sort(AddressOf compareZipEntryFilenames)
Private Function compareZipEntryFilenames(ByVal x As Object, ByVal y As Object) As Integer
Dim one As String = CType(x, ZipEntry).FileName
Dim two As String = CType(y, ZipEntry).FileName
If Path.GetDirectoryName(one) = Path.GetDirectoryName(two) Then
Return String.Compare(one, two)
Else
Select Regex.Matches(one, "/").Count.CompareTo(Regex.Matches(two, "/").Count)
Case -1 'one has less / than two; so one then two
Return -1
Case 1 'one has more / than two; so two then one
Return 1
Case Else ' = 0, same number of /; so alphabetical sorting
Return String.Compare(one, two)
End Select
End If
End Function
private class PathComparer
implements IComparer
Public Function compareZipEntryFilenames(ByVal x As Object, ByVal y As Object) As Integer Implements IComparer.Compare
Dim one As String = CType(x, ZipEntry).FileName
Dim two As String = CType(y, ZipEntry).FileName
If Path.GetDirectoryName(one) = Path.GetDirectoryName(two) Then
Return String.Compare(one, two)
Else
Select Regex.Matches(one, "/").Count.CompareTo(Regex.Matches(two, "/").Count)
Case -1 'one has less / than two; so one then two
Return -1
Case 1 'one has more / than two; so two then one
Return 1
Case Else ' = 0, same number of /; so alphabetical sorting
Return String.Compare(one, two)
End Select
End If
End Function
end class
Private Function compareZipEntryFilenames(ByVal x As ZipEntry, ByVal y As ZipEntry) As Integer
Dim res As Integer = String.Compare(Path.GetDirectoryName(x.FileName), Path.GetDirectoryName(y.FileName))
If res = 0 Then
Return String.Compare(x.FileName, y.FileName)
Else
Return res
End If
End Function