為方便使用者快速掌握和了解Spire.XLS，本文列舉了Excel處理控件Spire.XLS常見問題及解答歡迎下載最新版體驗！

Spire.XLS for Java 最新下載

如何將圖像添加到 Excel 中？

A : 請調用 Add 方法將圖像添加到 Excel 文件的工作表中。完整代碼：

Workbook workbook = new Workbook();
Worksheet sheet = workbook.Worksheets[0];

//insert the picture day.jpg into the sheet and place it in the cell "B3"
sheet.Pictures.Add(3, 2, "day.jpg");
workbook.SaveToFile("result.xlsx");

如何在 Excel 文件的工作表中插入新行？

A : 請調用方法 InsertRow 將新行添加到 Excel 文件的工作表中。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[0];

//add a new row in the third row
sheet.InsertRow(3);
workbook.SaveToFile("result.xlsx");

如何在 XLS 中設置打印區域？

A：您可以設置工作表的 PrintArea 屬性來執行此操作。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[0];

//set print area from cell "B2" to cell "F8"
sheet.PageSetup.PrintArea = "B2:F8";
workbook.SaveToFile("result.xlsx");

如何復制帶格式的單元格？

A：Spire.XLS 為您提供了一種名為 Copy 的方法來復制帶有格式的單元格。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet1 = workbook.Worksheets[0];
Worksheet sheet3 = workbook.Worksheets[2];

//copy cell "B2" in sheet1 to cell "C6" in sheet3
sheet1.Range[3, 2].Copy(sheet3.Range[6,3]);
workbook.SaveToFile("result.xlsx");

如何將 XLS 轉換為 PDF？

A : 首先，您需要將參考 Spire.Pdf 和 Spire.Common 添加到您的項目中。然后創建一個 PdfDocument 實例和一個 PDF 轉換器對象。最后，調用 Convert 方法將 XLS 轉換為 PDF。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
PdfConverter pdfConverter = new PdfConverter(workbook);
PdfDocument pdfDocument = new PdfDocument();

//settings of result PDF docement
pdfDocument.PageSettings.Orientation = PdfPageOrientation.Landscape;
pdfDocument.PageSettings.Width = 970;
pdfDocument.PageSettings.Height = 850;
PdfConverterSettings settings = new PdfConverterSettings();
settings.TemplateDocument = pdfDocument;

//convert XLS to PDF using PdfConverter
pdfDocument = pdfConverter.Convert(settings);
pdfDocument.SaveToFile("result.pdf");

如何在 XLS 中合并單元格？

A：Spire.XLS 為您提供了一種稱為 Merge 的方法來合并 XLS 中的單元格。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[0];

//merges cells "B3" "B4"
sheet.Range["B3:B4"].Merge();
workbook.SaveToFile("result.xlsx");

如何重新排列 XLS 文件中的工作表？

A : Spire.XLS 為您提供了一個名為 MoveWorksheet 的方法來重新排列 XLS 文件中的工作表？完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[3];

//move the fourth worksheet sheet to the first position of the worksheets
sheet.MoveWorksheet(0);
workbook.SaveToFile("result.xlsx");

如何刪除excel工作表中的列？

A：Spire.XLS 為您提供了一個名為 DeleteColumn 的方法來刪除列。此方法立即影響工作表集合的順序。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[1];
//delete the second column
sheet.DeleteColumn(2);

//delete the fourth column
sheet.DeleteColumn(3);
workbook.SaveToFile("result.xlsx");

如何在 XLS 中設置指定范圍內的數字格式？

A : 您可以使用目標單元格的屬性 NumberFormat 來格式化 cellrange 的 NumberValue。完整代碼：

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample.xlsx");
Worksheet sheet = workbook.Worksheets[0];

//set number format in specified range
sheet.Range[2, 2, 6, 6].NumberFormat = "$#,##0.00";
sheet.Range["C3"].NumberValue = 3240.689;
sheet.Range["D4"].NumberValue = 5230.123;
workbook.SaveToFile("result.xlsx");

如何在單元格中添加公式？

A : 只需設置單元格的公式屬性即可添加公式。完整代碼：

Workbook workbook = new Workbook();
Worksheet worksheet = workbook.Worksheets[0];

//add formula =IF(H7>0,(IF(F7 > 0,(H7-F7)/F7,"""")),"""") to cell "J7"
string formula = @"=IF(H7>0,(IF(F7 > 0,(H7-F7)/F7,"""")),"""")";
worksheet.Range["J7"].Formula = formula;
worksheet.Range["F7"].NumberValue = 5;
worksheet.Range["H7"].NumberValue = 4;
workbook.SaveToFile("result.xlsx", ExcelVersion.Version2007);

如何合并多個工作簿？

A：Spire.XLS 為您提供了一種名為 AddCopy 的方法來合并 Excel 文件。完整代碼： 

Workbook workbook = new Workbook();
workbook.LoadFromFile("sample1.xlsx");
Workbook workbookDest = new Workbook();
workbookDest.LoadFromFile("sample2.xlsx");

//merge workbook with workbookDest
workbookDest.Worksheets.AddCopy(workbook.Worksheets);
workbookDest.SaveToFile("result.xlsx");

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