How do I write this VB6 dll call in C#? [RESOLVED]

[BrianHawley]

How do I call a legacy 32-bit dll from C#?

The VB6 code would look like this:

Option Explicit
 
Private Declare Function MyFunc Lib "my.dll" _
          (ByVal cmd As String) As Boolean
 
Private Sub Command1_Click()
  
  If MyFunc("abc") Then
    MsgBox "Cool!"
  End If
 
End Sub

How should that look in C#?

Thanks!