static extern TODO PathIsExe(TODO);

[DllImport("shell32.dll", EntryPoint = "PathIsExeW",  SetLastError = True, CharSet = CharSet.Unicode)]

static extern bool PathIsExe([MarshalAs(UnmanagedType.LPWStr)]string szfile);

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

Public Function PathIsExe(<MarshalAs(UnmanagedType.LPWStr)>szfile As String) As <MarshalAs(UnmanagedType.Bool)> Boolean

Public Declare Function PathIsExe Lib "shell32" _