[Visual Basic]
 
'Create a new IMClient
Dim MC as new IMSDK.IMClient
 
 
 
'Call the Listen Sub
MC.Listen()
 
 
 
'Now Try to login
MC.BeginLogin(TxtUsername.Text,TxtPassword.Text)
 
 
 
'if username and password is valid then
Private Sub MC_OnLoggedin(ByVal UserObject As IMSDK.User) Handles MC.OnLoggedin
    Debug.WriteLine("Username logged in : " & MCUser.Username & " , " & MCUser.Password)
End Sub
 
 
 
'if username or password is invalid then
Private Sub MC_OnUsernameOrPasswordInvalid(ByVal Username As String, ByVal Password As String) Handles MC.OnUsernameOrPasswordInvalid
  Debug.WriteLine("Username password invalid : " & Username & " , " & Password)
End Sub
 
 
 
 
'To Block a Contact
MC.BeginFriendBlockUnBlock(TxtFriendusername.text, True)
 
 
'Then Event
 Private Sub MC_OnFriendBlocked(ByVal FriendUsername As String) Handles MC.OnFriendBlocked
   Debug.WriteLine(FriendUsername & " Blocked")
 End Sub
 
 
 
 
 
'To Unblock a Contact
MC.BeginFriendBlockUnBlock(TxtFriendusername.text, False)
 
 
'Then Event
Private Sub MC_OnFriendUnBlocked(ByVal FriendUsername As String) Handles MC.OnFriendUnBlocked
     Debug.WriteLine(FriendUsername & " UnBlocked")
End Sub