Initila commit

Business/ExcelReader.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+using Excel = Microsoft.Office.Interop.Excel;
+
+namespace MergeCMInpro.Business
+{
+    internal class ExcelReader
+    {
+        public static string ReadExcel(string filename, string vorgangId)
+        {
+            Excel.Application excel = null;
+            excel = new Excel.Application();
+            excel.Visible = true;
+            Excel.Workbook wkb = null;
+
+            wkb = Open(excel, filename);
+            Excel.Range searchedRange = excel.get_Range("A1", "XFD1048576");
+            Excel.Range currentFind = searchedRange.Find(vorgangId);
+            Excel.Sheets excelSheets = wkb.Worksheets;
+            Excel.Worksheet excelWorksheet = (Excel.Worksheet)excelSheets.get_Item(1);
+            string res = string.Empty;
+
+            if (currentFind != null)
+            {             
+                var cellValue = Convert.ToString((excelWorksheet.Cells[currentFind.Row, currentFind.Column+10] as Excel.Range).Value);
+                DateTime dt = DateTime.Parse(cellValue);
+                res = dt.ToShortDateString();               
+            }
+            else
+            {
+                res = "01.01.1900";
+                //TODO: Logger, falls nicht gefunden. Und sonst wird 01.01.1900 als default gesetzt
+            }
+           
+            wkb.Close(true);
+            excel.Quit();
+            return res;
+        }
+
+        public static Excel.Workbook Open(Excel.Application excelInstance,
+                       string fileName, bool readOnly = false, bool editable = true,
+                       bool updateLinks = true)
+        {
+            Excel.Workbook book = excelInstance.Workbooks.Open(
+                fileName, updateLinks, readOnly,
+                Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
+                Type.Missing, editable, Type.Missing, Type.Missing, Type.Missing,
+                Type.Missing, Type.Missing);
+            return book;
+        }
+
+        public static void ReleaseComObjects(ref List<object> comObjects)
+        {
+            for (int i = 0; i < comObjects.Count; i++)
+            {
+                object obj = comObjects[i];
+                if (Marshal.IsComObject(obj))
+                {
+                    while (obj != null && Marshal.ReleaseComObject(obj) != 0) ;
+                    while (obj != null && Marshal.FinalReleaseComObject(obj) != 0) ;
+                }
+                obj = null;
+            }
+
+            GC.Collect();
+            GC.WaitForPendingFinalizers();
+        }
+       
+        public static int GetColumnNumber(string column)//A --> 1 B --> 2 CI --> 87
+        {
+            int col = 0;
+            char[] temp = column.ToUpper().ToCharArray();
+            for (int i = temp.Length - 1; i >= 0; i--)
+            {
+                int num = Convert.ToInt32(temp[i]) - 64;
+                col += num * Convert.ToInt32(Math.Pow(26, temp.Length - 1 - i));
+            }
+            return col;
+        }
+    }
+
+}
+