IsolatedStorageFile.DeleteFile(String) Method

Definition

Namespace:

System.IO.IsolatedStorage

Assembly:

System.IO.IsolatedStorage.dll

Source:

IsolatedStorageFile.cs

Deletes a file in the isolated storage scope.

public:
 void DeleteFile(System::String ^ file);

public void DeleteFile (string file);

member this.DeleteFile : string -> unit

Public Sub DeleteFile (file As String)

Parameters

file

String

The relative path of the file to delete within the isolated storage scope.

Exceptions

IsolatedStorageException

The target file is open or the path is incorrect.

ArgumentNullException

The file path is null.

Examples

The following code example uses the DeleteFile method to delete a number of files in isolated storage.

void DeleteFiles()
{
   
   try
   {
      IsolatedStorageFile^ isoFile = IsolatedStorageFile::GetStore( static_cast<IsolatedStorageScope>(IsolatedStorageScope::User | IsolatedStorageScope::Assembly | IsolatedStorageScope::Domain), System::Security::Policy::Url::typeid, System::Security::Policy::Url::typeid );
      array<String^>^dirNames = isoFile->GetDirectoryNames( "*" );
      array<String^>^fileNames = isoFile->GetFileNames( "*" );
      
      // List the files currently in this Isolated Storage.
      // The list represents all users who have personal
      // preferences stored for this application.
      if ( fileNames->Length > 0 )
      {
         for ( int i = 0; i < fileNames->Length; ++i )
         {
            
            //Delete the files.
            isoFile->DeleteFile( fileNames[ i ] );

         }
         fileNames = isoFile->GetFileNames( "*" );
      }
      isoFile->Close();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->ToString() );
   }

}

public void DeleteFiles()
{
    try
    {
        IsolatedStorageFile isoFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User |
            IsolatedStorageScope.Assembly |
            IsolatedStorageScope.Domain,
            typeof(System.Security.Policy.Url),
            typeof(System.Security.Policy.Url));

        String[] dirNames = isoFile.GetDirectoryNames("*");
        String[] fileNames = isoFile.GetFileNames("*");

        // List the files currently in this Isolated Storage.
        // The list represents all users who have personal
        // preferences stored for this application.
        if (fileNames.Length > 0)
        {
            for (int i = 0; i < fileNames.Length; ++i)
            {
                // Delete the files.
                isoFile.DeleteFile(fileNames[i]);
            }
            // Confirm that no files remain.
            fileNames = isoFile.GetFileNames("*");
        }
    }
    catch (Exception e)
    {
        Console.WriteLine(e.ToString());
    }
}

Public Sub DeleteFiles()
    Try
        Dim isoFile As IsolatedStorageFile = IsolatedStorageFile.GetStore(IsolatedStorageScope.User Or _
            IsolatedStorageScope.Assembly Or IsolatedStorageScope.Domain, _
            GetType(System.Security.Policy.Url), GetType(System.Security.Policy.Url))
        Dim name As String
        Dim dirNames As String() = isoFile.GetDirectoryNames("*")
        Dim fileNames As String() = isoFile.GetFileNames("*")
        ' List the files currently in this Isolated Storage.
        ' The list represents all users who have personal
        ' preferences stored for this application.
        If fileNames.Length > 0 Then
            For Each name In fileNames
                ' Delete the files.
                isoFile.DeleteFile(name)
            Next name
            'Confirm no files are left.
            fileNames = isoFile.GetFileNames("*")
        End If
    Catch ex As Exception
        Console.WriteLine(ex.ToString())
    End Try
End Sub

Remarks

The deleted file cannot be recovered once deleted.

The How to: Delete Files and Directories in Isolated Storage example demonstrates the use of the DeleteFile method.

See also

• Isolated Storage