The given path s format is not supported

Question

I have the following code in my web service   string str uploadpath   Server MapPath   UploadBucket Raw     FileStream objfilestream   new FileStream str uploadpath                   fileName  FileMode Create  FileAccess ReadWrite     Can someone help me resolve the issue with this error message from line 2 of the code      The given path s format is not supported    Permission on the folder is set to full access to everyone and it is the actual path to the folder   The breakpoint gave me the value of str uploadpath as C   webprojects  webservices  UploadBucket  Raw     What is wrong with this string

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I am using the  limited  Expression builder for a Variable for use in a simple File System Task to make an archive of a file in SSIS   This is my quick and dirty hack to remove the colons to stop the error     User  LocalFile     -     REPLACE  DT STR  30  1252  GETDATE          -       xml

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This was my problem  which may help someone else -- although it wasn t the OP s issue   DirectoryInfo diTemp   new DirectoryInfo strSomePath   FileStream fsTemp   new FileStream diTemp ToString       I determined the problem by outputting my path to a log file  and finding it not formatting correctly  Correct for me was quite simply   DirectoryInfo diTemp   new DirectoryInfo strSomePath   FileStream fsTemp   new FileStream diTemp FullName ToString

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Does using the Path Combine method help  It s a safer way for joining file paths together  It could be that it s having problems joining the paths together

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Try changing   Server MapPath   UploadBucket Raw     to  Server MapPath    UploadBucket Raw

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Rather than using str uploadpath   fileName  try using System IO Path Combine instead   Path Combine str uploadpath  fileName     which returns a string

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If the value is a file url like file   C  whatever  use the Uri class to translate to a regular filename   var localPath    new Uri urlStylePath   AbsolutePath  In general  using the provided API is best practice

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I see that the originator found out that the error occurred when trying to save the filename with an entire path  Actually it s enough to have a     in the file name to get this error  If there might be     in your file name  for instance if you have a date stamp in your file name  make sure you replace these with something else  I e    string fullFileName   fileName Split      0          DateTime Now ToString   Replace       -            fileName Split      1

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Image img   Image FromFile System IO Path GetFullPath  quot C    File Address quot      you need getfullpath by pointed class  I had same error and fixed

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I had the same issue today  The file I was trying to load into my code was open for editing in Excel  After closing Excel  the code began to work

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Among other things that can cause this error   You cannot have certain characters in the full PathFile string   For example  these characters will crash the StreamWriter function               there may be other special characters that crash it too  I found this happens when you try  for example  to put a DateTime stamp into a filename   AppPath   Path GetDirectoryName giFileNames 0       AppPath is a valid path from system   This was easy in VB6  just AppPath   App Path  amp         AppPath must have     char at the end     DateTime   DateAndTime Now ToString   fails StreamWriter    has     characters FileOut    Data Summary    amp  DateTime  amp    dat  NewFileOutS   Path Combine AppPath  FileOut  Using sw As StreamWriter   New StreamWriter NewFileOutS    True    true to append         sw WriteLine NewFileOutS          sw Dispose       End Using   One way to prevent this trouble is to replace problem characters in NewFileOutS with benign ones     clean the File output file string NewFileOutS so StreamWriter will work  NewFileOutS   NewFileOutS Replace      -     replace   with -  NewFileOutS   NewFileOutS Replace      -     replace   with -     after cleaning the FileNamePath string NewFileOutS  StreamWriter will not throw an  Unhandled  exception    Hope this saves someone some headaches

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If you are trying to save a file to the file system  Path Combine is not bullet proof as it won t help you if the file name contains invalid characters  Here is an extension method that strips out invalid characters from file names   public static string ToSafeFileName this string s            return s              Replace                        Replace                       Replace                        Replace                       Replace                       Replace                       Replace   lt                     Replace   gt                     Replace                   And the usage can be   Path Combine str uploadpath  fileName ToSafeFileName

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For me the problem was an invisible to human eye     Left-To-Right Embedding character  It stuck at the beginning of the string  just before the  D    after I copy-pasted the path  from the windows file properties security tab   var yourJson   System IO File ReadAllText   D  test json txt       Works var yourJson   System IO File ReadAllText    D  test json txt       Error   So those  identical at first glance  two lines are actually different

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If you get this error in PowerShell  it s most likely because you re using Resolve-Path to resolve a remote path  e g    Resolve-Path   server share path   In this case  Resolve-Path returns an object that  when converted to a string  doesn t return a valid path   It returns PowerShell s internal path    gt   string  Resolve-Path   server share path  Microsoft PowerShell Core FileSystem    server share path   The solution is to use the ProviderPath property on the object returned by Resolve-Path    gt  Resolve-Path   server share path   Select-Object -ExpandProperty PRoviderPath   server share path  gt   Resolve-Path   server share path  ProviderPath   server share path

[c#] "The given path's format is not supported."

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