IsolatedStorageFileStream Constructor (String, FileMode, FileAccess, IsolatedStorageFile)

 
System_CAPS_noteNote

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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.

Namespace:   System.IO.IsolatedStorage
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.

System_CAPS_cautionCaution

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 =
    new IsolatedStorageFileStream(this.userName,
    FileMode.OpenOrCreate,
    FileAccess.Write,
    isoFile);

StreamWriter writer = new 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 = " + isoFile.CurrentSize.ToString());
Console.WriteLine("MaximumSize = " + isoFile.MaximumSize.ToString());
// StreamWriter.Close implicitly closes isoStream.
writer.Close();
isoFile.Dispose();
isoFile.Close();
return d;

IsolatedStorageFilePermission

for isolated storage access

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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