Вам нужно создать часть стиля и ссылаться на нее по Cell c1 = new Cell() { StyleIndex = (UInt32Value)1U };.
Чек
public ActionResult CreateExcel()
{
MemoryStream ms = new MemoryStream();
SpreadsheetDocument xl = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook);
WorkbookPart wbp = xl.AddWorkbookPart();
WorkbookStylesPart workbookStylesPart1 = wbp.AddNewPart<WorkbookStylesPart>("rId3");
GenerateWorkbookStylesPart1Content(workbookStylesPart1);
WorksheetPart wsp = wbp.AddNewPart<WorksheetPart>();
Workbook wb = new Workbook();
FileVersion fv = new FileVersion();
fv.ApplicationName = "Microsoft Office Excel";
Worksheet ws = new Worksheet();
//First cell
SheetData sd = new SheetData();
Row r1 = new Row() { RowIndex = (UInt32Value)1u };
Cell c1 = new Cell() { StyleIndex = (UInt32Value)1U };
c1.DataType = CellValues.String;
c1.CellValue = new CellValue("some value");
r1.Append(c1);
// Second cell
Cell c2 = new Cell() { StyleIndex = (UInt32Value)1U };
c2.CellReference = "C1";
c2.DataType = CellValues.String;
c2.CellValue = new CellValue("other value");
r1.Append(c2);
sd.Append(r1);
//third cell
Row r2 = new Row() { RowIndex = (UInt32Value)2u };
Cell c3 = new Cell();
c3.DataType = CellValues.String;
c3.CellValue = new CellValue("some string");
Cell c4 = new Cell();
c4.DataType = CellValues.String;
c4.CellValue = new CellValue("some car");
r2.Append(c3);
r2.Append(c4);
sd.Append(r2);
ws.Append(sd);
wsp.Worksheet = ws;
wsp.Worksheet.Save();
Sheets sheets = new Sheets();
Sheet sheet = new Sheet();
sheet.Name = "first sheet";
sheet.SheetId = 1;
sheet.Id = wbp.GetIdOfPart(wsp);
sheets.Append(sheet);
wb.Append(fv);
wb.Append(sheets);
xl.WorkbookPart.Workbook = wb;
xl.WorkbookPart.Workbook.Save();
xl.Close();
string fileName = "getdata.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();
return File(dt, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "getdata.xlsx");
}
private void GenerateWorkbookStylesPart1Content(WorkbookStylesPart workbookStylesPart1)
{
Stylesheet stylesheet1 = new Stylesheet() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "x14ac x16r2" } };
stylesheet1.AddNamespaceDeclaration("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006");
stylesheet1.AddNamespaceDeclaration("x14ac", "http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac");
stylesheet1.AddNamespaceDeclaration("x16r2", "http://schemas.microsoft.com/office/spreadsheetml/2015/02/main");
Fonts fonts1 = new Fonts() { Count = (UInt32Value)2U, KnownFonts = true };
Font font1 = new Font();
FontSize fontSize1 = new FontSize() { Val = 11D };
Color color1 = new Color() { Theme = (UInt32Value)1U };
FontName fontName1 = new FontName() { Val = "Calibri" };
FontFamilyNumbering fontFamilyNumbering1 = new FontFamilyNumbering() { Val = 2 };
FontScheme fontScheme1 = new FontScheme() { Val = FontSchemeValues.Minor };
font1.Append(fontSize1);
font1.Append(color1);
font1.Append(fontName1);
font1.Append(fontFamilyNumbering1);
font1.Append(fontScheme1);
Font font2 = new Font();
FontSize fontSize2 = new FontSize() { Val = 11D };
Color color2 = new Color() { Theme = (UInt32Value)0U };
FontName fontName2 = new FontName() { Val = "Calibri" };
FontFamilyNumbering fontFamilyNumbering2 = new FontFamilyNumbering() { Val = 2 };
FontScheme fontScheme2 = new FontScheme() { Val = FontSchemeValues.Minor };
font2.Append(fontSize2);
font2.Append(color2);
font2.Append(fontName2);
font2.Append(fontFamilyNumbering2);
font2.Append(fontScheme2);
fonts1.Append(font1);
fonts1.Append(font2);
Fills fills1 = new Fills() { Count = (UInt32Value)3U };
Fill fill1 = new Fill();
PatternFill patternFill1 = new PatternFill() { PatternType = PatternValues.None };
fill1.Append(patternFill1);
Fill fill2 = new Fill();
PatternFill patternFill2 = new PatternFill() { PatternType = PatternValues.Gray125 };
fill2.Append(patternFill2);
Fill fill3 = new Fill();
PatternFill patternFill3 = new PatternFill() { PatternType = PatternValues.Solid };
ForegroundColor foregroundColor1 = new ForegroundColor() { Rgb = "FF0070C0" };
BackgroundColor backgroundColor1 = new BackgroundColor() { Indexed = (UInt32Value)64U };
patternFill3.Append(foregroundColor1);
patternFill3.Append(backgroundColor1);
fill3.Append(patternFill3);
fills1.Append(fill1);
fills1.Append(fill2);
fills1.Append(fill3);
Borders borders1 = new Borders() { Count = (UInt32Value)2U };
Border border1 = new Border();
LeftBorder leftBorder1 = new LeftBorder();
RightBorder rightBorder1 = new RightBorder();
TopBorder topBorder1 = new TopBorder();
BottomBorder bottomBorder1 = new BottomBorder();
DiagonalBorder diagonalBorder1 = new DiagonalBorder();
border1.Append(leftBorder1);
border1.Append(rightBorder1);
border1.Append(topBorder1);
border1.Append(bottomBorder1);
border1.Append(diagonalBorder1);
Border border2 = new Border();
LeftBorder leftBorder2 = new LeftBorder() { Style = BorderStyleValues.Double };
Color color3 = new Color() { Auto = true };
leftBorder2.Append(color3);
RightBorder rightBorder2 = new RightBorder() { Style = BorderStyleValues.Double };
Color color4 = new Color() { Auto = true };
rightBorder2.Append(color4);
TopBorder topBorder2 = new TopBorder() { Style = BorderStyleValues.Double };
Color color5 = new Color() { Auto = true };
topBorder2.Append(color5);
BottomBorder bottomBorder2 = new BottomBorder() { Style = BorderStyleValues.Double };
Color color6 = new Color() { Auto = true };
bottomBorder2.Append(color6);
DiagonalBorder diagonalBorder2 = new DiagonalBorder();
border2.Append(leftBorder2);
border2.Append(rightBorder2);
border2.Append(topBorder2);
border2.Append(bottomBorder2);
border2.Append(diagonalBorder2);
borders1.Append(border1);
borders1.Append(border2);
CellStyleFormats cellStyleFormats1 = new CellStyleFormats() { Count = (UInt32Value)1U };
CellFormat cellFormat1 = new CellFormat() { NumberFormatId = (UInt32Value)0U, FontId = (UInt32Value)0U, FillId = (UInt32Value)0U, BorderId = (UInt32Value)0U };
cellStyleFormats1.Append(cellFormat1);
CellFormats cellFormats1 = new CellFormats() { Count = (UInt32Value)2U };
CellFormat cellFormat2 = new CellFormat() { NumberFormatId = (UInt32Value)0U, FontId = (UInt32Value)0U, FillId = (UInt32Value)0U, BorderId = (UInt32Value)0U, FormatId = (UInt32Value)0U };
CellFormat cellFormat3 = new CellFormat() { NumberFormatId = (UInt32Value)0U, FontId = (UInt32Value)1U, FillId = (UInt32Value)2U, BorderId = (UInt32Value)1U, FormatId = (UInt32Value)0U, ApplyFont = true, ApplyFill = true, ApplyBorder = true };
cellFormats1.Append(cellFormat2);
cellFormats1.Append(cellFormat3);
CellStyles cellStyles1 = new CellStyles() { Count = (UInt32Value)1U };
CellStyle cellStyle1 = new CellStyle() { Name = "Normal", FormatId = (UInt32Value)0U, BuiltinId = (UInt32Value)0U };
cellStyles1.Append(cellStyle1);
DifferentialFormats differentialFormats1 = new DifferentialFormats() { Count = (UInt32Value)0U };
TableStyles tableStyles1 = new TableStyles() { Count = (UInt32Value)0U, DefaultTableStyle = "TableStyleMedium2", DefaultPivotStyle = "PivotStyleLight16" };
StylesheetExtensionList stylesheetExtensionList1 = new StylesheetExtensionList();
StylesheetExtension stylesheetExtension1 = new StylesheetExtension() { Uri = "{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" };
stylesheetExtension1.AddNamespaceDeclaration("x14", "http://schemas.microsoft.com/office/spreadsheetml/2009/9/main");
X14.SlicerStyles slicerStyles1 = new X14.SlicerStyles() { DefaultSlicerStyle = "SlicerStyleLight1" };
stylesheetExtension1.Append(slicerStyles1);
StylesheetExtension stylesheetExtension2 = new StylesheetExtension() { Uri = "{9260A510-F301-46a8-8635-F512D64BE5F5}" };
stylesheetExtension2.AddNamespaceDeclaration("x15", "http://schemas.microsoft.com/office/spreadsheetml/2010/11/main");
X15.TimelineStyles timelineStyles1 = new X15.TimelineStyles() { DefaultTimelineStyle = "TimeSlicerStyleLight1" };
stylesheetExtension2.Append(timelineStyles1);
stylesheetExtensionList1.Append(stylesheetExtension1);
stylesheetExtensionList1.Append(stylesheetExtension2);
stylesheet1.Append(fonts1);
stylesheet1.Append(fills1);
stylesheet1.Append(borders1);
stylesheet1.Append(cellStyleFormats1);
stylesheet1.Append(cellFormats1);
stylesheet1.Append(cellStyles1);
stylesheet1.Append(differentialFormats1);
stylesheet1.Append(tableStyles1);
stylesheet1.Append(stylesheetExtensionList1);
workbookStylesPart1.Stylesheet = stylesheet1;
}