Update Program.cs sample code to use the Using block for IDisposable objects.

samples/spreadsheet/working_with_sheets/cs/Program.cs

@@ -6,53 +6,53 @@
 
 static void CreateSpreadsheetWorkbook(string filepath)
 {
-    // Create a spreadsheet document by supplying the filepath.
-    // By default, AutoSave = true, Editable = true, and Type = xlsx.
-    SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Create(filepath, SpreadsheetDocumentType.Workbook);
-
-    // Add a WorkbookPart to the document.
-    WorkbookPart workbookPart = spreadsheetDocument.AddWorkbookPart();
-    workbookPart.Workbook = new Workbook();
+    // Use 'using' block to ensure proper disposal of the document
+    using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Create(filepath, SpreadsheetDocumentType.Workbook))
+    {
+        // Add a WorkbookPart to the document.
+        WorkbookPart workbookPart = spreadsheetDocument.AddWorkbookPart();
+        workbookPart.Workbook = new Workbook();
 
-    // Add a WorksheetPart to the WorkbookPart.
-    WorksheetPart worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
-    worksheetPart.Worksheet = new Worksheet(new SheetData());
+        // Add a WorksheetPart to the WorkbookPart.
+        WorksheetPart worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
+        worksheetPart.Worksheet = new Worksheet(new SheetData());
 
-    // Add Sheets to the Workbook.
-    Sheets sheets = workbookPart.Workbook.AppendChild<Sheets>(new Sheets());
+        // Add Sheets to the Workbook.
+        Sheets sheets = workbookPart.Workbook.AppendChild(new Sheets());
 
-    // Append a new worksheet and associate it with the workbook.
-    Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "mySheet" };
-    sheets.Append(sheet);
+        // Append a new worksheet and associate it with the workbook.
+        Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "mySheet" };
+        sheets.Append(sheet);
 
-    // Get the sheetData cell table.
-    SheetData sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>() ?? worksheetPart.Worksheet.AppendChild(new SheetData());
+        // Get the sheetData cell table.
+        SheetData sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>() ?? worksheetPart.Worksheet.AppendChild(new SheetData());
 
-    // Add a row to the cell table.
-    Row row;
-    row = new Row() { RowIndex = 1 };
-    sheetData.Append(row);
+        // Add a row to the cell table.
+        Row row = new Row() { RowIndex = 1 };
+        sheetData.Append(row);
 
-    // In the new row, find the column location to insert a cell in A1.  
-    Cell? refCell = null;
+        // In the new row, find the column location to insert a cell in A1.  
+        Cell? refCell = null;
 
-    foreach (Cell cell in row.Elements<Cell>())
-    {
-        if (string.Compare(cell.CellReference?.Value, "A1", true) > 0)
+        foreach (Cell cell in row.Elements<Cell>())
         {
-            refCell = cell;
-            break;
+            if (string.Compare(cell.CellReference?.Value, "A1", true) > 0)
+            {
+                refCell = cell;
+                break;
+            }
         }
-    }
 
-    // Add the cell to the cell table at A1.
-    Cell newCell = new Cell() { CellReference = "A1" };
-    row.InsertBefore(newCell, refCell);
+        // Add the cell to the cell table at A1.
+        Cell newCell = new Cell() { CellReference = "A1" };
+        row.InsertBefore(newCell, refCell);
 
-    // Set the cell value to be a numeric value of 100.
-    newCell.CellValue = new CellValue("100");
-    newCell.DataType = new EnumValue<CellValues>(CellValues.Number);
+        // Set the cell value to be a numeric value of 100.
+        newCell.CellValue = new CellValue("100");
+        newCell.DataType = new EnumValue<CellValues>(CellValues.Number);
 
-    // Dispose the document.
-    spreadsheetDocument.Dispose();
+        // Explicitly save the worksheet part and workbook part
+        worksheetPart.Worksheet.Save();
+        workbookPart.Workbook.Save();
+    }
 }