Införande av repository method

Accounting.BLR/Excellent.cs

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+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();
+        }
+    }
+}