string [,] arrayLast=new string[rowCount,coulumnCount];
            colIndex = 0;
            rowIndex=0;
            try
            {
                foreach(DataRow row in table.Rows)
                {                
                    foreach(DataColumn col in table.Columns)
                    {                        
                        arrayLast[rowIndex,colIndex]=row[col.ColumnName].ToString();
                        colIndex++;
                    }
                    rowIndex++;
                    colIndex = 0;
                }
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            Excel.Range dataRangeLast=excelWorkSheetLast.get_Range(excelWorkSheetLast.Cells[2,1],excelWorkSheetLast.Cells[rowCount+1,coulumnCount]);
            dataRangeLast.Value2=arrayLast;