IsolatedStorageFile.FileExists Method

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

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 nulla null reference (Nothing in Visual Basic); otherwise, false.

' 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

// Write to an existing file: MyApp1\SubDir1\MyApp1A.txt
// Determine if the file exists before writing to it.
string filePath = Path.Combine(subdirectory1, "MyApp1A.txt");
if (store.FileExists(filePath))
{
 try
 {
 using (StreamWriter sw =
 new StreamWriter(store.OpenFile(filePath,
 FileMode.Open, FileAccess.Write)))
 {
 sw.WriteLine("To do list:");
 sw.WriteLine("1. Buy supplies.");
 }
 }
 catch (IsolatedStorageException ex)
 {
 sb.AppendLine(ex.Message);
 }
}

IsolatedStorageFile Class

System.IO.IsolatedStorage Namespace