Zurnal/UI/conver.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using OfficeOpenXml;
+
+class Conver
+{
+    static void Main()
+    {
+        var attendanceData = new Dictionary<string, Dictionary<DateTime, bool>>
+        {
+            { "Группа 1", new Dictionary<DateTime, bool> { { new DateTime(2023, 10, 1), true }, { new DateTime(2023, 10, 2), false } } },
+            { "Группа 2", new Dictionary<DateTime, bool> { { new DateTime(2023, 10, 1), true }, { new DateTime(2023, 10, 2), true } } }
+        };
+
+        using (ExcelPackage excel = new ExcelPackage())
+        {
+            foreach (var group in attendanceData)
+            {
+                var worksheet = excel.Workbook.Worksheets.Add(group.Key);
+                worksheet.Cells[1, 1].Value = "ФИО";
+                int column = 2;
+
+                foreach (var date in group.Value.Keys)
+                {
+                    worksheet.Cells[1, column].Value = date.ToShortDateString();
+                    column++;
+                }
+
+                int row = 2;
+                foreach (var student in group.Value)
+                {
+                    worksheet.Cells[row, 1].Value = student.Key;
+                    column = 2;
+
+                    foreach (var date in group.Value.Keys)
+                    {
+                        worksheet.Cells[row, column].Value = group.Value[date] ? "Присутствует" : "Отсутствует";
+                        column++;
+                    }
+                    row++;
+                }
+            }
+
+            FileInfo excelFile = new FileInfo(@"C:\Users\profi\source\Musor\Xcel");
+            excel.SaveAs(excelFile);
+        }
+    }
+}