FileIOPermission

FileIOPermission settings are required for PowerScript system functions in Windows Forms targets.

Permission requirements in Web Forms

For Web Forms targets, file-releated functions require Read, Write, Append and PathDiscovery permissions on the appname_root directory. For print-related functions, you must set the PrintingPermission value to AllPrinting, in addition to setting Read, Write, and PathDiscover permissions on the appname_root/print directory.

Permission requirements for Windows Forms

FileIOPermission required for system functions in Windows Forms
System function	Permission required
AddToLibraryList,DirectoryExists , FileEncoding, FileExists, FileLength, FileLength64, FileRead, FileReadEx, FileSeek, FileSeek64, LibraryDirectory, LibraryDirectoryEx, LibraryExport, PrintBitmap, ProfileInt, ProfileString, SetProfileString, SetLibraryList, ShowHelp, ShowPopupHelp, and XMLParseFile	Read
FileWrite, FileWriteEx, RemoveDirectory, LibraryCreate, LibraryDelete, and LibraryImport	Write
FileDelete	Read and Write
FileOpen	When the FileAccess argument is Read! Read permission for file named in FileName (first) argument When the FileAccess argument is Write! Append and Write permission when the WriteMode argument is Append! Read and Write permission when the WriteMode argument is Replace!
FileCopy (string s, string t)	Read for the source file (first) argument; Write for the target file (second) argument
FileMove (string s, string t)	Read and Write for the source file (first) argument; Write for the target file (second) argument
GetFolder	Unrestricted
GetCurrentDirectory	PathDiscovery for the current directory
CreateDirectory (string d)	Read for the parent directory; Write for the directory name argument

This table shows the required FileIOPermission settings for object and control functions in Windows Forms targets.

Object or control	Function or property	Permission required
Animation	AnimationName	Read
DataWindow	SaveAsAscii , SaveAsFormattedText , SavInk , SaveInkPicture	Write
	ImportFile	Read permission if the (usually second) file name argument is supplied; if file name argument is empty or null, requires OpenSave FileDialogPermission and Unrestricted FileIOPermission
	SaveAs	Write permission if the (usually second) file name argument is supplied; if file name argument is empty or null, requires OpenSave FileDialogPermission and Unrestricted FileIOPermission
DataWindow (RichText only)	InsertDocument	Read
DataStore	ImportFile	Read
DataStore	SaveAs, SaveAsAscii , SaveAsFormattedText , SavInk , SaveInkPicture	Write
DragObject	DragIcon property	Read
DropDownListBox, ListBox	DirList (string s, uint filetype)	Read and PathDiscovery for the file specification (first) argument
DropDownPictureListBox, PictureListBox	AddPicture, and PictureName property	Read
DropDownPictureListBox, PictureListBox	DirList (string s, uint filetype)	Read and PathDiscovery for the file specification (first) argument
Graph	ImportFile	Read
Graph	SaveAs	Unrestricted for function with no arguments; Write on the file name (first) argument for function with arguments
InkPicture	PictureFileName property	Read
	LoadInk	Read and Write for the file (first) argument
	LoadPicture	Read for the file (first) argument
	Save, SaveInk	Write for the file (first) argument and for the current temporary file directory
Listview	AddLargePicture, AddSmallPicture, AddStatePicture, and LargePictureName, SmallPictureName, StatePictureName properties	Read
Picture	PictureName property	Read
PictureButton	DisabledName, PictureName properties	Read
RichTextEdit	InsertDocument, InsertPicture	Read
RichTextEdit	SaveDocument	Write
Treeview	AddPicture, AddStatePicture, and PictureName, StatePictureName properties	Read
UserObject	PictureName property	Read

Example 1

This XML example gives Read access to two files and write access to one of those files:

<IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="d:\test.txt;c:\demo.jpg" Write="c:\demo.jpg" />

Example 2

This example for a Web Forms application grants Read, Write, Append, and PathDiscovery permissions to the main deployment and root directories for the MyWebApp application:

<IPermission class="FileIOPermission" version="1" Read="MyWebApp_root;MyWebApp" Write="MyWebApp_root;MyWebApp" Append="MyWebApp_root;MyWebApp" PathDiscovery="MyWebApp_root;MyWebApp"/>