uupdate 20240829

DOCGEN/Klassen/SyndFExcel.cs

@@ -1,12 +1,43 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Syncfusion.XlsIO;
 
 namespace DOCGEN.Klassen
 {
-    internal class SyndFExcel
+    public class SynFExcel
     {
+        public bool create_nativ_excel(string property, string value, string base64, string originalfile, string destfile)
+        {
+            FileStream ms = new FileStream(originalfile, FileMode.Open, FileAccess.Read);
+            FileStream os = new FileStream(destfile, FileMode.Create);
+            ExcelEngine ex = new ExcelEngine();
+            IApplication application = ex.Excel;
+            IWorkbook workbook = application.Workbooks.Open(ms);
+
+            try
+            {
+                workbook.CustomDocumentProperties[property].Text = value;
+            }
+            catch
+            {
+                workbook.CustomDocumentProperties.Remove(property);
+                workbook.CustomDocumentProperties[property].Text = value;
+
+            }
+            workbook.SaveAs(os);
+            workbook.Close();
+            workbook = null;
+            application = null;
+            ms.Close();
+            ms.Dispose();
+            os.Close();
+            os.Dispose();
+            return true;
+
+        }
     }
 }