如何使用OpenXml生成.xlsx文件时设置要包装的文本单元格的格式？这是我目前的代码：
public void Excel()
{
var viewModel = new RequirementIndexData();
viewModel.Requirements = db.Requirement;
MemoryStream ms = new MemoryStream();
SpreadsheetDocument dc = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook);
WorkbookPart mdp = dc.AddWorkbookPart();
WorksheetPart wsp = mdp.AddNewPart<WorksheetPart>();
Workbook wb = new Workbook();
FileVersion fv = new FileVersion();
fv.ApplicationName = "Microsoft Office Excel";
Worksheet ws = new Worksheet();
SheetData sd = new SheetData();
Columns columns = new Columns();
columns.Append(CreateColumnData(1, 1, 95));
ws.Append(columns);
Row r1 = new Row() { RowIndex = (UInt32Value)1u };
Cell c1 = new Cell();
c1.DataType = CellValues.SharedString;
c1.CellValue = new CellValue(OpenSoft.AgileAnalytics.EF.App_LocalResources.GlobalRes.VersionNumber + " " + viewModel.Requirements.OrderBy(r => r.CreatedOn).Select(r => r.CurentVersion).First().ToString());
r1.Append(c1);
sd.Append(r1);
for (int i = 2; i < viewModel.Requirements.Count() + 2; i++)
{
Row row2;
row2 = new Row()
{
RowIndex = (UInt32)i,
Height = 25,
DyDescent = 1.50D,
Hidden = false,
Collapsed = false
};
Cell cell2 = new Cell() { StyleIndex = Convert.ToUInt32(1) };
cell2.DataType = CellValues.SharedString;
cell2.CellValue = new CellValue((i - 1).ToString() + ". " + viewModel.Requirements.OrderBy(r => r.CreatedOn).Select(r => r.Definition).ElementAt(i - 2).ToString());
row2.Append(cell2);
sd.Append(row2);
}
ws.Append(sd);
wsp.Worksheet = ws;
wsp.Worksheet.Save();
Sheets sheets = new Sheets();
Sheet sheet = new Sheet();
sheet.Name = "specification1";
sheet.SheetId = 1;
sheet.Id = mdp.GetIdOfPart(wsp);
sheets.Append(sheet);
wb.Append(fv);
wb.Append(sheets);
dc.WorkbookPart.Workbook = wb;
dc.WorkbookPart.Workbook.Save();
dc.Close();
string filename = "specification1.xlsx";
Response.Clear();
byte[] dt = ms.ToArray();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", filename));
Response.BinaryWrite(dt);
Response.End();
}
private WorkbookStylesPart AddStyleSheet(SpreadsheetDocument spreadsheet)
{
WorkbookStylesPart stylesheet = spreadsheet.WorkbookPart.AddNewPart<WorkbookStylesPart>();
Stylesheet workbookstylesheet = new Stylesheet();
// <Fonts>
Font font0 = new Font(); // Default font
Fonts fonts = new Fonts(); // <APENDING Fonts>
fonts.Append(font0);
// <Fills>
Fill fill0 = new Fill(); // Default fill
Fills fills = new Fills(); // <APENDING Fills>
fills.Append(fill0);
// <Borders>
Border border0 = new Border(); // Defualt border
Borders borders = new Borders(); // <APENDING Borders>
borders.Append(border0);
// <CellFormats>
CellFormat cellformat0 = new CellFormat() { FontId = 0, FillId = 0, BorderId = 0 }; // Default style : Mandatory
CellFormat cellformat1 = new CellFormat(new Alignment() { WrapText = true }); // Style with textwrap set
// <APENDING CellFormats>
CellFormats cellformats = new CellFormats();
cellformats.Append(cellformat0);
cellformats.Append(cellformat1);
// Append FONTS, FILLS , BORDERS & CellFormats to stylesheet <Preserve the ORDER>
workbookstylesheet.Append(fonts);
workbookstylesheet.Append(fills);
workbookstylesheet.Append(borders);
workbookstylesheet.Append(cellformats);
// Finalize
stylesheet.Stylesheet = workbookstylesheet;
stylesheet.Stylesheet.Save();
return stylesheet;
}
答案 0 :(得分：13)
您需要为此定义样式。样式在样式表中定义。每种样式都有一个ID，当您创建单元格时，您可以引用已定义的样式ID。
将样式表定义为电子表格：
private WorkbookStylesPart AddStyleSheet(SpreadsheetDocument spreadsheet)
{
WorkbookStylesPart stylesheet = spreadsheet.WorkbookPart.AddNewPart<WorkbookStylesPart>();
Stylesheet workbookstylesheet = new Stylesheet();
// <Fonts>
Font font0 = new Font(); // Default font
Fonts fonts = new Fonts(); // <APENDING Fonts>
fonts.Append(font0);
// <Fills>
Fill fill0 = new Fill(); // Default fill
Fills fills = new Fills(); // <APENDING Fills>
fills.Append(fill0);
// <Borders>
Border border0 = new Border(); // Defualt border
Borders borders = new Borders(); // <APENDING Borders>
borders.Append(border0);
// <CellFormats>
CellFormat cellformat0 = new CellFormat() { FontId = 0, FillId = 0, BorderId = 0 }; // Default style : Mandatory
CellFormat cellformat1 = new CellFormat(new Alignment() { WrapText=true}); // Style with textwrap set
// <APENDING CellFormats>
CellFormats cellformats = new CellFormats();
cellformats.Append(cellformat0);
cellformats.Append(cellformat1);
// Append FONTS, FILLS , BORDERS & CellFormats to stylesheet <Preserve the ORDER>
workbookstylesheet.Append(fonts);
workbookstylesheet.Append(fills);
workbookstylesheet.Append(borders);
workbookstylesheet.Append(cellformats);
// Finalize
stylesheet.Stylesheet = workbookstylesheet;
stylesheet.Stylesheet.Save();
return stylesheet;
}
现在，当您添加单元格时，请使用define样式ID，如下所示：
Cell c1 = new Cell(){StyleIndex = Convert.ToUInt32(1)}; // Assign our defined style with text wrap.
编辑：您需要在添加workbookpart后添加样式表..
答案 1 :(得分：0)
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
//pathToExcel is filename of the existing file
using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Open(pathToExcel, true))
{
//Get workbookpart
WorkbookPart workbookPart = spreadsheetDocument.WorkbookPart;
WorkbookStylesPart wbsp = CreateStylesheet(workbookPart.WorkbookStylesPart);
//then access to the worksheet part
List<WorksheetPart> worksheetPart = workbookPart.WorksheetParts.ToList();
foreach (WorksheetPart WSP in worksheetPart)
{
//find sheet data
IEnumerable<SheetData> sheetData = WSP.Worksheet.Elements<SheetData>();
//Iterate through every sheet inside Excel sheet
foreach (SheetData SD in sheetData)
{
IEnumerable<Row> row = SD.Elements<Row>(); // Get the row
int rowindex = 1;
foreach (Row currentrow in row)
{
foreach (Cell cell in currentrow.Descendants<Cell>())
{
//Doing Wordwrap in the cell using openxml - in open xml we need to do cell level word wrap
cell.StyleIndex = Convert.ToUInt32(1);
}
//Here Row AutoFit property is not available, setting the row height manually and skipping 1st two rows
if (rowindex > 2)
{
currentrow.Height = currentrow.Height + 5;
currentrow.CustomHeight = true;
}
rowindex++;
}
}
WSP.Worksheet.Save();
}
//workbookPart.Workbook.Save();
spreadsheetDocument.Close();
}
private static WorkbookStylesPart CreateStylesheet(WorkbookStylesPart spreadsheet)
{
WorkbookStylesPart stylesheet = spreadsheet;
Stylesheet workbookstylesheet = new Stylesheet();
// <CellFormats>
CellFormat cellformat0 = new CellFormat() { FontId = 0, FillId = 0, BorderId = 0 }; // Default style : Mandatory
CellFormat cellformat1 = new CellFormat(new Alignment() { WrapText = true });
//Style with textwrap set
Fills fills = new Fills();
Fill fill;
PatternFill patternFill;
fill = new Fill();
patternFill = new PatternFill();
patternFill.PatternType = PatternValues.None;
fill.PatternFill = patternFill;
fills.Append(fill);
//<APENDING CellFormats>
CellFormats cellformats = new CellFormats();
cellformats.Append(cellformat0);
cellformats.Append(cellformat1);
// Append FONTS, FILLS , BORDERS & CellFormats to stylesheet <Preserve the ORDER>
workbookstylesheet.Append(fills);
workbookstylesheet.Append(cellformats);
// Finalize
stylesheet.Stylesheet = workbookstylesheet;
stylesheet.Stylesheet.Save();
return stylesheet;
}