VSTO Excel From Range to Array Array to Range

using System;
using Excel = Microsoft.Office.Interop.Excel;

namespace ExcelArray
{
    public partial class ThisAddIn
    {
        Excel.Worksheet ws;
        Excel.Range c;
        Object[,] arValue;

        private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
            ws  = (Excel.Worksheet)Globals.ThisAddIn.Application.ActiveWorkbook.ActiveSheet;
            
            for (int j = 1; j < 11; j++)
            {
                for (int i = 1; i < 11; i++)
                {
                    c = (Excel.Range)ws.Cells[i, j];
                    c.Value2 = i+j-1;
                }
            }

            // From Range to Array
            // We copy the 2nth column
            c = (Excel.Range)ws.get_Range(ws.Cells[1, 2], ws.Cells[10, 2]);
            c.Interior.ColorIndex = 2;
            arValue = (Object[,])c.Value2;
            
            // Array to Range
            // We paste on the first column
            c = (Excel.Range)ws.get_Range(ws.Cells[12, 1], ws.Cells[21, 1]);
            c.Value2 = arValue;
            c.Interior.ColorIndex = 6;
        }

        private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
        {
        }

        #region VSTO generated code

        /// 

        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 
        private void InternalStartup()
        {
            this.Startup += new System.EventHandler(ThisAddIn_Startup);
            this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
        }
        
        #endregion
    }
}