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为方便使用者快速掌握和了解Spire.XLS，本文列举了Excel处理控件Spire.XLS常见问题及解答欢迎下载最新版体验！

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如何将图像添加到 Excel 中？

A : 请调用 Add 方法将图像添加到 Excel 文件的工作表中。完整代码：

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 : 请调用方法 InsertRow 将新行添加到 Excel 文件的工作表中。完整代码：

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 中设置打印区域？

A：您可以设置工作表的 PrintArea 属性来执行此操作。完整代码：

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");

如何复制带格式的单元格？

A：Spire.XLS 为您提供了一种名为 Copy 的方法来复制带有格式的单元格。完整代码：

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");

如何将 XLS 转换为 PDF？

A : 首先，您需要将参考 Spire.Pdf 和 Spire.Common 添加到您的项目中。然后创建一个 PdfDocument 实例和一个 PDF 转换器对象。最后，调用 Convert 方法将 XLS 转换为 PDF。完整代码：

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 中合并单元格？

A：Spire.XLS 为您提供了一种称为 Merge 的方法来合并 XLS 中的单元格。完整代码：

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 为您提供了一个名为 MoveWorksheet 的方法来重新排列 XLS 文件中的工作表？完整代码：

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");

如何删除excel工作表中的列？

A：Spire.XLS 为您提供了一个名为 DeleteColumn 的方法来删除列。此方法立即影响工作表集合的顺序。完整代码：

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 中设置指定范围内的数字格式？

A : 您可以使用目标单元格的属性 NumberFormat 来格式化 cellrange 的 NumberValue。完整代码：

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");

如何在单元格中添加公式？

A : 只需设置单元格的公式属性即可添加公式。完整代码：

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);

如何合并多个工作簿？

A：Spire.XLS 为您提供了一种名为 AddCopy 的方法来合并 Excel 文件。完整代码： 

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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