Help to convert Microsoft.VisualBasic.Right to C# code

Question

I have vb.net code, i try the code to C#. But microsoft.visualbasic.right not found in C# code. I don't know how to convert that. Can you help me to convert this code?

 

This is vb.net code

Sub Autonumber()
        'Koneksi()

        Dim _Urutan As String
        Dim _Hitung, _Cari As Long

        CMD = New OdbcCommand("Select * from data where kode in " &
                                         "(select max(kode) from data)", CONN)
        RD = CMD.ExecuteReader
        RD.Read()
        If Not RD.HasRows Then
            _Urutan = "K" & "001"
        Else
            _Cari = Microsoft.VisualBasic.Right(RD.GetString(0), 3)
            If Microsoft.VisualBasic.Left(RD.GetString(0), 1) <> "K" Then
                _Urutan = "K" & "001"
            Else
                _Hitung = Microsoft.VisualBasic.Right(RD.GetString(0), 3) + 1
                _Urutan = "K" & Microsoft.VisualBasic.Right("000" & _Hitung, 3)
            End If
        End If
        RD.Close()
        txtCode.Text = _Urutan
    End Sub

This in c# code 

public void Autonumber()
        {
            string _Urutan;
            long _Hitung, _Cari;
            CMD = new OdbcCommand("Select * from data where kode in " + "(select max(kode) from data)", CONN);
            RD = CMD.ExecuteReader();
            RD.Read();
            if (!RD.HasRows)
            {
                _Urutan = "K" + "001";
            }
            else
            {
                _Cari = Microsoft.VisualBasic.Right(RD.GetString(0), 3);
                if (Microsoft.VisualBasic.Left(RD.GetString(0), 1) != "K")
                {
                    _Urutan = "K" + "001";
                }
                else
                {
                    _Hitung = Microsoft.VisualBasic.Right(RD.GetString(0), 3) + 1;
                    _Urutan = "K" + Microsoft.VisualBasic.Right("000" + _Hitung, 3);
                }
            }

            RD.Close();
            txtCode.Text = _Urutan;
        }