The following fundamental rules enable applications to create and process valid names for. Path file' or the ' server share. Always check the. Jun 25, 2012 Determine if string is valid file path. To determine whether a string is a valid file path. The file to check. Required permissions and path contains the name of an existing file. Expression to test the whether the path is valid for your.

How do you check if a String value is a folder or a file? First of all, you cannot use And in a For Next statement. That causes you to bitwise combine your two integers. Secondly, there is a possibility that files do not have an extension, so checking Path.HasExtension() could at some point throw an exception. Thirdly, to concatenate path's together you are better of using IO.Path.Combine(). So first we take care of the bitwise combining statement.

Using Math. Bitdefender Security For File Servers 3.5 Crack there. Min() you will get the lowest of the two values (which you must, because if one for some reason has more items than the other, your code would throw an IndexOutOfRangeException). For i = 0 To Math.Min(oldfldrnme.Count, newfldrnme.Count) - 1 Now let's check if the path is a file or not. You cannot do Directory.Exists(i) because i is your Integer variable, not a complete path.

To correctly check it you must do Directory.Exists(). We use IO.Path.Combine() to correctly get the destination path. For i = 0 To Math.Min(oldfldrnme.Count, newfldrnme.Count) - 1 Dim DestPath As String = Path.Combine(dest, oldfldrnme(i)) 'This is the file/directory to be renamed.

If File.Exists(DestPath) Then ElseIf Directory.Exists(DestPath) Then End If Next Finally, we do the renaming. For i = 0 To Math.Min(oldfldrnme.Count, newfldrnme.Count) - 1 Dim DestPath As String = Path.Combine(dest, oldfldrnme(i)) 'This is the file/directory to be renamed.

If File.Exists(DestPath) Then Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(DestPath, newfldrnme(i)) ElseIf Directory.Exists(DestPath) Then Microsoft.VisualBasic.FileIO.FileSystem.RenameDirectory(DestPath, newfldrnme(i)) End If Next EDIT: And as Cody Gray noted, you should probably add some exception handling to the code in case of something else performing I/O operations with your files/directories. So we'll be adding a Try Catch statement around the renaming operations. In case of that an error occurs the Catch blocks will be executed, meaning that you don't have the issue of your whole application stopping. For i = 0 To Math.Min(oldfldrnme.Count, newfldrnme.Count) - 1 Dim DestPath As String = Path.Combine(dest, oldfldrnme(i)) 'This is the file/directory to be renamed. If File.Exists(DestPath) Then Try Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(DestPath, newfldrnme(i)) Catch ex As Exception 'Log error using ex.Message. For example 'Could not rename file: ' & ex.Message End Try ElseIf Directory.Exists(DestPath) Then Try Microsoft.VisualBasic.FileIO.FileSystem.RenameDirectory(DestPath, newfldrnme(i)) Catch ex As Exception 'Log error using ex.Message. For example 'Could not rename folder: ' & ex.Message End Try End If Next.

The GetAttributes function will throw an exception if called on an item that doesn't exist. How could it possibly do otherwise? Something that doesn't exist has no attributes. As such, it is not a general solution for checking whether something exists. You will need to use the Exists method. For example: Public Enum FileSystemObject InvalidPath Directory File End Enum Public Function WhatIsThisThing(String path) As FileSystemObject If Directory.Exists(path) Then Return FileSystemObject.Directory Else If File.Exists(path) Return FileSystemObject.File Else Return FileSystemObject.InvalidPath End If End Function However, you still have a possible race condition here, as you always do when performing file I/O.

Performing the check before-hand is fine, but you also need to handle exceptions that might be thrown when you try to rename the object. You have no way of ensuring that the file or folder isn't deleted or renamed in between the time that you check its existence and the time that you issue the rename command. Deathkings Of The Dark Citadel Patch.

The Exists method should not be used for path validation, this method merely checks if the file specified in path exists. Passing an invalid path to Exists returns false. To check whether the path contains any invalid characters, you can call the method to retrieve the characters that are invalid for the file system. You can also create a regular expression to test the whether the path is valid for your environment. For examples of acceptable paths, see. To check if a directory exists, see.

Be aware that another process can potentially do something with the file in between the time you call the Exists method and perform another operation on the file, such as. The path parameter is permitted to specify relative or absolute path information. Yahoo Answers Movies. Relative path information is interpreted as relative to the current working directory.