我需要将数据表导出到excel文件。我使用DocumentFormat.OpenXml完成了它。但是我可以在导出的excel中获取日期（年 - 月 - 日）过滤器，因为我的单元格被视为字符串，而不是excel日期单元格。我用interop.dll得到它。但这很费时间。我有超过30000条记录。任何帮助表示赞赏。我的代码如下： -
protected void Page_Load(object sender, EventArgs e)
{
DataSet ds=new DataSet();
ds.Tables.Add(GetData());
GenerateExcel(ds);
}
public void GenerateExcel(DataSet data)
{
var Memstream = new MemoryStream();
using (var workbook = SpreadsheetDocument.Create(Memstream, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
{
var workbookPart = workbook.AddWorkbookPart();
workbook.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook();
workbook.WorkbookPart.Workbook.Sheets = new DocumentFormat.OpenXml.Spreadsheet.Sheets();
WorkbookStylesPart wbsp = workbookPart.AddNewPart<WorkbookStylesPart>();
wbsp.Stylesheet = CreateStylesheet1();
wbsp.Stylesheet.Save();
uint sheetId = 0;
foreach (System.Data.DataTable table in data.Tables)
{
var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>();
var sheetData = new DocumentFormat.OpenXml.Spreadsheet.SheetData();
sheetPart.Worksheet = new DocumentFormat.OpenXml.Spreadsheet.Worksheet(sheetData);
DocumentFormat.OpenXml.Spreadsheet.Sheets sheets = workbook.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>();
string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart);
int k = sheets.ChildElements.Count;
string bsd = sheets.InnerText;
string jknkj = sheets.InnerXml;
sheetId = sheetId++;
DocumentFormat.OpenXml.Spreadsheet.Sheet sheet = new DocumentFormat.OpenXml.Spreadsheet.Sheet() { Id = relationshipId, SheetId = sheetId, Name = table.TableName };
sheets.Append(sheet);
DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
List<String> columns = new List<string>();
foreach (DataColumn column in table.Columns)
{
columns.Add(column.ColumnName);
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName);
headerRow.AppendChild(cell);
}
sheetData.AppendChild(headerRow);
foreach (DataRow dsrow in table.Rows)
{
DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
foreach (String col in columns)
{
DateTime dDate;
if (DateTime.TryParse(dsrow[col].ToString(), out dDate))
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.Number;
cell.StyleIndex = 164;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dDate.ToOADate().ToString());
newRow.AppendChild(cell);
}
else
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString());
newRow.AppendChild(cell);
}
}
sheetData.AppendChild(newRow);
}
}
workbookPart.Workbook.Save();
workbook.Close();
}
string filename=@"D:\\Excel Samples\file_" + DateTime.Now.ToString("MM-dd-yyyyHH-mm-ss") + ".xlsx";
FileStream file = new FileStream(filename, FileMode.Create, FileAccess.Write);
Memstream.WriteTo(file);
file.Close();
Memstream.Close();
}
private Stylesheet CreateStylesheet1()
{
Stylesheet ss = new Stylesheet();
Fonts fts = new Fonts();
DocumentFormat.OpenXml.Spreadsheet.Font ft = new DocumentFormat.OpenXml.Spreadsheet.Font();
FontName ftn = new FontName();
ftn.Val = "Calibri";
DocumentFormat.OpenXml.Spreadsheet.FontSize ftsz = new DocumentFormat.OpenXml.Spreadsheet.FontSize();
ftsz.Val = 11;
ft.FontName = ftn;
ft.FontSize = ftsz;
fts.Append(ft);
fts.Count = (uint)fts.ChildElements.Count;
Fills fills = new Fills();
Fill fill;
PatternFill patternFill;
fill = new Fill();
patternFill = new PatternFill();
patternFill.PatternType = PatternValues.None;
fill.PatternFill = patternFill;
fills.Append(fill);
fill = new Fill();
patternFill = new PatternFill();
patternFill.PatternType = PatternValues.Gray125;
fill.PatternFill = patternFill;
fills.Append(fill);
fills.Count = (uint)fills.ChildElements.Count;
Borders borders = new Borders();
Border border = new Border();
border.LeftBorder = new LeftBorder();
border.RightBorder = new RightBorder();
border.TopBorder = new TopBorder();
border.BottomBorder = new BottomBorder();
border.DiagonalBorder = new DiagonalBorder();
borders.Append(border);
borders.Count = (uint)borders.ChildElements.Count;
CellStyleFormats csfs = new CellStyleFormats();
CellFormat cf = new CellFormat();
cf.NumberFormatId = 0;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
csfs.Append(cf);
csfs.Count = (uint)csfs.ChildElements.Count;
uint iExcelIndex = 164;
NumberingFormats nfs = new NumberingFormats();
CellFormats cfs = new CellFormats();
cf = new CellFormat();
cf.NumberFormatId = 0;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cfs.Append(cf);
NumberingFormat nf;
nf = new NumberingFormat();
nf.NumberFormatId = iExcelIndex++;
nf.FormatCode = StringValue.FromString("mm/dd/yyyy hh:mm:ss");
//nf.FormatCode = StringValue.FromString("mm-d-yy h:mm:ss AM/PM");
nfs.Append(nf);
cf = new CellFormat();
cf.ApplyNumberFormat = true;
cf.NumberFormatId = nf.NumberFormatId;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cfs.Append(cf);
nf = new NumberingFormat();
nf.NumberFormatId = iExcelIndex++;
nf.FormatCode = "#,##0.0000";
nfs.Append(nf);
cf = new CellFormat();
cf.NumberFormatId = nf.NumberFormatId;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cf.ApplyNumberFormat = true;
cfs.Append(cf);
// #,##0.00 is also Excel style index 4
nf = new NumberingFormat();
nf.NumberFormatId = iExcelIndex++;
nf.FormatCode = "#,##0.00";
nfs.Append(nf);
cf = new CellFormat();
cf.NumberFormatId = nf.NumberFormatId;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cf.ApplyNumberFormat = true;
cfs.Append(cf);
// @ is also Excel style index 49
nf = new NumberingFormat();
nf.NumberFormatId = iExcelIndex++;
nf.FormatCode = "@";
nfs.Append(nf);
cf = new CellFormat();
cf.NumberFormatId = nf.NumberFormatId;
cf.FontId = 0;
cf.FillId = 0;
cf.BorderId = 0;
cf.FormatId = 0;
cf.ApplyNumberFormat = true;
cfs.Append(cf);
nfs.Count = (uint)nfs.ChildElements.Count;
cfs.Count = (uint)cfs.ChildElements.Count;
ss.Append(nfs);
ss.Append(fts);
ss.Append(fills);
ss.Append(borders);
ss.Append(csfs);
ss.Append(cfs);
CellStyles css = new CellStyles();
CellStyle cs = new CellStyle();
cs.Name = "Normal";
cs.FormatId = 0;
cs.BuiltinId = 0;
css.Append(cs);
css.Count = (uint)css.ChildElements.Count;
ss.Append(css);
DifferentialFormats dfs = new DifferentialFormats();
dfs.Count = 0;
ss.Append(dfs);
TableStyles tss = new TableStyles();
tss.Count = 0;
tss.DefaultTableStyle = "TableStyleMedium9";
tss.DefaultPivotStyle = "PivotStyleLight16";
ss.Append(tss);
return ss;
}
答案 0 :(得分：1)
感谢您的回复。我得到了答案。通过设置StyleIndex = 1而不是164，我得到了解决方案。希望这有助于任何人..