IsolatedStorageFile.FileExists Method

July 28, 2014

Determines whether the specified path refers to an existing file in the isolated store.

Namespace:  System.IO.IsolatedStorage
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Function FileExists ( _
	path As String _
) As Boolean

Parameters

path
Type: System.String
The path and file name to test.

Return Value

Type: System.Boolean
true if path refers to an existing file in the isolated store and is not Nothing; otherwise, false.

ExceptionCondition
IsolatedStorageException

The isolated store has been removed.

-or-

Isolated storage is disabled.

ObjectDisposedException

The isolated store has been disposed.

The following example determines whether a file exists before writing to it. 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


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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