轻松学会spire.xls的常规操作
No.1 如何将图像添加到Excel中？
答：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");No.2 如何将新行插入Excel文件的工作表中？
答：请调用InsertRow方法将新行添加到Excel fils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");No.3 如何在XLS中设置打印区域？
答：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");No.4 如何使用格式复制单元格？
答：Spire.XLS为您提供了一种称为“复制”的方法，用于格式化复制单元格。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");No.5 如何将XLS转换为PDF？
答：首先，您需要将Spire.Pdf和Spire.Common引用添加到您的项目中。然后创建一个PdfDocument和一个PDF转换器对象的实例。最后，调用方法Convert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");No.6 如何合并XLS中的单元格？
答：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。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");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");答 ：Spire.XLS为您提供了一种名为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");答：您可以使用目标单元格的属性NumberFormat来格式化单元格的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");No.10 如何将公式添加到单元格？
答：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);No.11 如何合并多个工作簿？
答：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");