עבודה עם Spreadsheet Management

using Aspose.Cells_FOSS;

var options = new LoadOptions
{
    TryRepairPackage = true,
    TryRepairXml = true,
};

try
{
    var wb = new Workbook("data.xlsx", options);
    Console.WriteLine("Sheets: " + wb.Worksheets.Count);
    Console.WriteLine("Cell A1: " + wb.Worksheets[0].Cells["A1"].StringValue);
}
catch (WorkbookLoadException ex)
{
    Console.WriteLine("Unrecoverable: " + ex.Message);
}

using Aspose.Cells_FOSS;

var wb = new Workbook();

// Rename the default sheet
wb.Worksheets[0].Name = "Summary";

// Add sheets
var dataIdx = wb.Worksheets.Add("Data");
var archiveIdx = wb.Worksheets.Add("Archive");

// Set active sheet
wb.Worksheets.ActiveSheetName = "Data";

// Write to sheets by name
wb.Worksheets["Summary"].Cells["A1"].PutValue("Overview total");
wb.Worksheets["Data"].Cells["A1"].PutValue("Raw rows start here");

wb.Save("organised.xlsx");

// Verify
var loaded = new Workbook("organised.xlsx");
Console.WriteLine("Active: " + loaded.Worksheets.ActiveSheetName);
Console.WriteLine("Sheet count: " + loaded.Worksheets.Count);

using Aspose.Cells_FOSS;

var wb = new Workbook();
wb.Worksheets[0].Name = "Visible";
var hiddenIdx = wb.Worksheets.Add("Internal");
var hiddenSheet = wb.Worksheets[hiddenIdx];

hiddenSheet.VisibilityType = VisibilityType.Hidden;
hiddenSheet.Cells["A1"].PutValue("Internal data");

wb.Worksheets["Visible"].TabColor = Color.FromArgb(255, 70, 130, 180);

wb.Save("hidden.xlsx");

using Aspose.Cells_FOSS;

var wb = new Workbook();
var ws = wb.Worksheets[0];

// Sample data
for (var r = 0; r < 60; r++)
    ws.Cells[r, 0].PutValue("Row " + (r + 1));

var ps = ws.PageSetup;
ps.Orientation = PageOrientationType.Landscape;
ps.PaperSize = PaperSizeType.PaperA4;
ps.LeftMarginInch = 0.5d;
ps.RightMarginInch = 0.5d;
ps.TopMarginInch = 0.75d;
ps.BottomMarginInch = 0.75d;
ps.PrintArea = "$A$1:$H$60";
ps.PrintTitleRows = "$1:$1";
ps.CenterHeader = "Sales Report";
ps.LeftFooter = "Confidential";
ps.RightFooter = "Page &P of &N";
ps.PrintGridlines = true;
ps.CenterHorizontally = true;
ps.AddHorizontalPageBreak(30);

wb.Save("paged.xlsx");

var loaded = new Workbook("paged.xlsx");
Console.WriteLine("Orientation: " + loaded.Worksheets[0].PageSetup.Orientation);
Console.WriteLine("Print area: " + loaded.Worksheets[0].PageSetup.PrintArea);

using Aspose.Cells_FOSS;

var wb = new Workbook();
var ws = wb.Worksheets[0];

// Populate data
for (var r = 0; r < 5; r++)
    for (var c = 0; c < 4; c++)
        ws.Cells[r, c].PutValue($"R{r + 1}C{c + 1}");

// Row height and visibility
ws.Cells.Rows[0].Height = 28d;   // Header taller
ws.Cells.Rows[3].IsHidden = true; // Hide row 4

// Column width and visibility
ws.Cells.Columns[0].Width = 22d;
ws.Cells.Columns[3].IsHidden = true;

wb.Save("layout.xlsx");

var loaded = new Workbook("layout.xlsx");
Console.WriteLine("Row 0 height: " + loaded.Worksheets[0].Cells.Rows[0].Height);
Console.WriteLine("Col 0 width: " + loaded.Worksheets[0].Cells.Columns[0].Width);

using Aspose.Cells_FOSS;

var wb = new Workbook();
var ws = wb.Worksheets[0];

// Title spanning A1:D1
ws.Cells["A1"].PutValue("Quarterly Sales Report");
ws.Cells.Merge(0, 0, 1, 4);

// Section header spanning A3:D3
ws.Cells["A3"].PutValue("Region: North");
ws.Cells.Merge(2, 0, 1, 4);

// Column headers
ws.Cells["A4"].PutValue("Product"); ws.Cells["B4"].PutValue("Q1");
ws.Cells["C4"].PutValue("Q2");      ws.Cells["D4"].PutValue("Q3");

wb.Save("report.xlsx");

var loaded = new Workbook("report.xlsx");
Console.WriteLine("Merged regions: " + loaded.Worksheets[0].Cells.MergedCells.Count);