IsolatedStorageFile.OpenFile Method (String, FileMode, FileAccess)
July 28, 2014
Opens a file in the specified mode with the specified file access.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Function OpenFile ( _ path As String, _ mode As FileMode, _ access As FileAccess _ ) As IsolatedStorageFileStream
- Type: System.String
The relative path of the file within the isolated store.
- Type: System.IO.FileMode
The mode in which to open the file.
- Type: System.IO.FileAccess
The type of access to open the file with.
Return ValueType: System.IO.IsolatedStorage.IsolatedStorageFileStream
A file that is opened in the specified mode and access, and is unshared.
The isolated store has been removed.
Isolated storage is disabled.
path is malformed.
path is Nothing.
The directory in path does not exist.
No file was found and the mode is set to Open .
The isolated store has been disposed.
This method is equivalent to using the IsolatedStorageFileStream.IsolatedStorageFileStream(String, FileMode, FileAccess, IsolatedStorageFile) constructor.
The following example opens a file for writing. This example is part of a larger example provided for IsolatedStorageFile class.
' Write to an existing file: MyApp1\SubDir1\MyApp1A.txt ' Determine if the file exists before writing to it. Dim filePath As String = Path.Combine(subdirectory1, "MyApp1A.txt") If store.FileExists(filePath) Then Try Using sw As StreamWriter = _ New StreamWriter(store.OpenFile(filePath, FileMode.Open, FileAccess.Write)) sw.WriteLine("To do list:") sw.WriteLine("1. Buy supplies.") End Using Catch ex As IsolatedStorageException sb.AppendLine(ex.Message) End Try Else sb.AppendLine((filePath + "does not exist")) End If