Accounting/Accounting.BLR/Excellent.cs

using Accounting.BLI;
using Microsoft.Extensions.Logging;
using Microsoft.Office.Interop.Excel;
using _Excel = Microsoft.Office.Interop.Excel;

namespace Accounting.BLR
{
    public class Excellent : IDisposable, IExcellent
    {
        string path = string.Empty;
        _Application excel = new _Excel.Application();
        Workbook wb;
        Worksheet ws;
        private readonly ILogger<Excellent> _logger;
        public int Columns { get; set; }
        public int Rows { get; set; }
        public string DataType { get; set; }

        public Excellent(ILogger<Excellent> logger)
        {
            _logger = logger;
        }
        public void ExcellentStart(string path, int Sheet)
        {
            if (wb != null)
            {
                wb.Close();
            }
            this.path = path;
            wb = excel.Workbooks.Open(path);
            ws = wb.Worksheets[Sheet];
            _Excel.Range usedRange = ws.UsedRange;
            Columns = usedRange.Columns.Count;
            Rows = usedRange.Rows.Count;
        }

        public string ReadCell(int i, int j)
        {
            i++;
            j++;
            if (ws.Cells[i, j].Value2 != null)
            {
                _Excel.Range cell = ws.Cells[i, j];
                object value = cell.get_Value(Type.Missing);
                if (value != null)
                {
                    Type type = value.GetType();
                    DataType = type.Name;
                    //Console.WriteLine($"Cell ({i},{j}) contains value of type {DataType}");
                }
                return Convert.ToString(ws.Cells[i, j].Value2);
            }
            return string.Empty;
        }

        public void Dispose()
        {
            excel.Workbooks.Close();
        }
    }
}