[DllImport("shell32.dll", EntryPoint="PathMakeUniqueName", CharSet=CharSet.Unicode)]

static extern bool PathMakeUniqueName (

<DllImport("shell32.dll", EntryPoint:="PathMakeUniqueName", CharSet:=CharSet.Unicode)> _

Shared Function PathMakeUniqueName( _

bool result = PathMakeUniqueName(buffer, buffer.Capacity, null, fileSpec, folderSpec);