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Q.如何将图像添加到Excel？

A:请调用方法添加将图像添加到Excel文件的工作表中。 全部代码：

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");

Q.如何将新行插入Excel文件的工作表？

A:请调用InsertRow方法将新行添加到Excel文件的工作表中。 全部代码：

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");

Q.如何在XLS中设置打印区域？

A:可以设置工作表的PrintArea属性。 全部代码：

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");

Q.如何复制单元格格式？

A:Spire.XLS为您提供了一种称为“复制”的格式来复制单元格的方法。 全部代码：

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");

Q.如何将XLS转换为PDF？

 A:首先，您需要将Spire.Pdf和Spire.Common的参考添加到您的项目中。 然后创建一个PdfDocument和一个PDF转换器对象的实例。 最后，调用转换方法转换XLS到PDF。 全部代码：

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");

Q.如何在XLS中合并单元格？

A:Spire.XLS为您提供了一种称为合并的方法来合并XLS中的单元格。 全部代码：

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");

Q.如何重新排列XLS文件中的工作表？

A:Spire.XLS为您提供了一个称为MoveWorksheet的方法来重新排列XLS文件中的工作表？ 全部代码：

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");

Q.如何删除excel工作表中的列？

 A:Spire.XLS为您提供一个名为DeleteColumn的方法来删除列。 此方法立即影响工作表收集的顺序。 全部代码：

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");

Q.如何在XLS中指定范围内设置数字格式？

 A:您可以使用目标单元格的NumberFormat格式来设置cellrange的NumberValue。 全部代码：

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");

Q.如何向单元格添加公式？

A:只需设置单元格的公式属性即可添加公式。 全部代码：

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);

Q.如何合并多个工作簿？

A:Spire.XLS为您提供了一个名为AddCopy的方法来合并Excel文件。 全部代码：

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");