IsolatedStorageFileStream Constructor (String^, FileMode, FileAccess, IsolatedStorageFile^)
Initializes a new instance of the IsolatedStorageFileStream class giving access to the file designated by path in the specified mode, with the specified file access, and in the context of the IsolatedStorageFile specified by isf.
Assembly: mscorlib (in mscorlib.dll)
public:
IsolatedStorageFileStream(
String^ path,
FileMode mode,
FileAccess access,
IsolatedStorageFile^ isf
)
Parameters
- path
-
Type:
System::String^
The relative path of the file within isolated storage.
- mode
-
Type:
System.IO::FileMode
One of the FileMode values.
- access
-
Type:
System.IO::FileAccess
A bitwise combination of the FileAccess values.
- isf
-
Type:
System.IO.IsolatedStorage::IsolatedStorageFile^
The IsolatedStorageFile in which to open the IsolatedStorageFileStream.
| Exception | Condition |
|---|---|
| ArgumentException | The path is badly formed. |
| ArgumentNullException | The path is null. |
| ObjectDisposedException | The isolated store is closed. |
| FileNotFoundException | No file was found and the mode is set to Open. |
| IsolatedStorageException | isf does not have a quota. |
The mode parameter indicates whether a new file should be created or an existing one used. The access parameter includes read-only, read/write, and write-only.
 Caution |
|---|
When you compile a set of characters with a particular cultural setting and retrieve those same characters with a different cultural setting, the characters might not be interpretable, and can cause an exception to be thrown. |
The following code example demonstrates the use of this constructor. For the complete context of this example, see the IsolatedStorageFileStream overview.
IsolatedStorageFile^ isoFile; isoFile = IsolatedStorageFile::GetUserStoreForDomain(); // Open or create a writable file. IsolatedStorageFileStream^ isoStream = gcnew IsolatedStorageFileStream( this->userName,FileMode::OpenOrCreate,FileAccess::Write,isoFile ); StreamWriter^ writer = gcnew StreamWriter( isoStream ); writer->WriteLine( this->NewsUrl ); writer->WriteLine( this->SportsUrl ); // Calculate the amount of space used to record the user's preferences. double d = isoFile->CurrentSize / isoFile->MaximumSize; Console::WriteLine( "CurrentSize = {0}", isoFile->CurrentSize.ToString() ); Console::WriteLine( "MaximumSize = {0}", isoFile->MaximumSize.ToString() ); writer->Close(); isoFile->Close(); isoStream->Close(); return d;
for isolated storage access
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0