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Asked: 2026-05-17T15:08:55+00:00

im creating temporary files to be stored in the Temp folder found by: string

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im creating temporary files to be stored in the Temp folder found by:

string path = System.IO.Path.GetTempPath()
method returns C:\windows\Temp\

i append my filename:

string filename = myfile.txt
System.IO.Path.Combine(path,filename)

However, this gives me a

“Message”:”The given path\u0027s format is not supported.”,”StackTrace”:” at System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath)\r\n at System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath)\r\n at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList)\r\n at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, AccessControlActions…… and so on

I have tried modifying the rights to the TEMP folder, so that NETWORK SERVICES has rights..
Any ideas?

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1 Answer

  1. Editorial Team

    Your path contains an invalid character. Unicode code is 0027 which is a single quote “‘” so you need to check where you are adding a single quote to the path.

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