Load specific cells from an Excel to a datagridview from winform in C #

with the help of a partner and googling out there, I managed to interop both the import of the grid and the export, in case I served someone there I leave the code, Regards.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Office.Interop.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using System.Windows.Forms;

namespace excelEPPlus
{
class MyExcel
{

    public static BindingList<CROMA> cromaList = new BindingList<CROMA>();
    //public static BindingList<CROMA2> cromaList2 = new BindingList<CROMA2>();
    private static Excel.Application Myapp = null;
    private static Excel.Workbook LibroExcel = null;
    private static Excel.Worksheet HojaExcel = null;
    private static Excel.Worksheet HojaExcelEnt = null;
    private static int lastRow = 8;

    public static List<string> ListaRangos = new List<string>() { "C5:C22", "F9:F26", "I2:I20", "L10:L27" };

    public static void InicializarExcel()
    {
        Myapp = new Excel.Application();
        LibroExcel = Myapp.Workbooks.Open(@"C:\Users\One323\Documents\Visual Studio 2015\Projects\excelEPPlus\excelEPPlus\Archivos\prueba.xlsx");
        HojaExcel = (Excel.Worksheet)LibroExcel.Sheets["Hoja2"];
        HojaExcelEnt = (Excel.Worksheet)LibroExcel.Sheets["Hoja4"];
        //lastRow = HojaExcelEnt.Cells.SpecialCells(Excel.XlCellType.xlCellTypeLastCell).Row;
    }

    public static BindingList<CROMA> ReadMyExcel()
    {
        cromaList.Clear();
        foreach (string Rango in ListaRangos)
        {
            var datoexcel = HojaExcel.Cells.Range[Rango].Value2;

            cromaList.Add(new CROMA
            {
                ID_EXCEL = datoexcel.GetValue(1, 1).ToString(),
                TAG = datoexcel.GetValue(3, 1).ToString(),
                NOMBRE = datoexcel.GetValue(4, 1).ToString(),
                Qg = datoexcel.GetValue(6, 1).ToString(),
                C1 = datoexcel.GetValue(8, 1).ToString(),
                C2 = datoexcel.GetValue(9, 1).ToString(),
                C3 = datoexcel.GetValue(10, 1).ToString(),
                iC4 = datoexcel.GetValue(11, 1).ToString(),
                nC4 = datoexcel.GetValue(12, 1).ToString(),
                iC5 = datoexcel.GetValue(13, 1).ToString(),
                nC5 = datoexcel.GetValue(14, 1).ToString(),
                C6 = datoexcel.GetValue(15, 1).ToString(),
                CO2 = datoexcel.GetValue(16, 1).ToString(),
                H2S = datoexcel.GetValue(17, 1).ToString(),
                N2 = datoexcel.GetValue(18, 1).ToString()
            });
        }
        return cromaList;
    }


    public static void WriteToExcel2(CROMA lsc)
    {
        //if (lastRow != null)
        try
            {
                lastRow += 1;
                HojaExcelEnt.Cells[lastRow, 2] = lsc.ID_EXCEL;
                HojaExcelEnt.Cells[lastRow, 4] = lsc.TAG;
                HojaExcelEnt.Cells[lastRow, 5] = lsc.NOMBRE;
                HojaExcelEnt.Cells[lastRow, 7] = lsc.Qg;
                HojaExcelEnt.Cells[lastRow, 10] = lsc.C1;
                HojaExcelEnt.Cells[lastRow, 11] = lsc.C2;

                //cromaList.Add(cromaExcel);

            }
            catch (Exception ex)
        { }
        LibroExcel.Save();
    }

    public static void Close()
    {
        LibroExcel.Close(true);
        Myapp.Quit();
    }
  }
}

The ReadMyExcel method is called po run button to load it to the DGV

  private void btnCroma_Click_1(object sender, EventArgs e)
    {
        MyExcel.InicializarExcel();
        dgvCroma.DataSource = MyExcel.ReadMyExcel();
        MyExcel.Close();
    }

The WriteToExcel2 method is launched by the other button

 private void btnGuardar2_Click(object sender, EventArgs e)
    {
        List<CROMA> lsC = new List<CROMA>();


        MyExcel.InicializarExcel();

        for (int i = 0; i < dgvEntrada.Rows.Count - 1; i++)
        {
            //for (int j = 0; j < dgvEntrada.Columns.Count; j++)
            //{
                //if (dgvEntrada.Rows[i].Cells[j + 1].Value != null)
                //{
                    CROMA cromanew = new CROMA
                    {

                        ID_EXCEL = dgvEntrada.Rows[i].Cells[0].Value == null ? "" : dgvEntrada.Rows[i].Cells[0].Value.ToString(),
                        TAG = dgvEntrada.Rows[i].Cells[1].Value == null ? "" : dgvEntrada.Rows[i].Cells[1].Value.ToString(),
                        NOMBRE = dgvEntrada.Rows[i].Cells[2].Value == null ? "" : dgvEntrada.Rows[i].Cells[2].Value.ToString(),
                        Qg = dgvEntrada.Rows[i].Cells[3].Value == null ? "" : dgvEntrada.Rows[i].Cells[3].Value.ToString(),
                        C1 = dgvEntrada.Rows[i].Cells[4].Value == null ? "" : dgvEntrada.Rows[i].Cells[4].Value.ToString(),
                        C2 = dgvEntrada.Rows[i].Cells[5].Value == null ? "" : dgvEntrada.Rows[i].Cells[5].Value.ToString()


                    };

                   //lsC.Add(cromanew);

                    MyExcel.WriteToExcel2(cromanew);

                //}


            //}

        }

        dgvEntrada.Rows.Clear();
        dgvEntrada.Refresh();
        MyExcel.Close();
    }

At least I stay in this way, maybe someone can optimize it more, greeting.