使用C＃中的Open Xml SDK将DataTable导出到Excel

Z时代
2024-01-10
分类：问答

对不起，我的英语。我是开放xml

SDK中的新手。我的程序能够将一些数据和DataTable导出到Excel文件（模板），在模板中，我将数据插入到一些占位符。它的工作原理非常好，但是我也需要插入一个数据表…我的示例代码：

using (Stream OutStream = new MemoryStream())
{
    // read teamplate
    using (var fileStream = File.OpenRead(templatePath))
        fileStream.CopyTo(OutStream);
    // exporting
    Exporting(OutStream);
    // to start
    OutStream.Seek(0L, SeekOrigin.Begin);
    // out
    using (var resultFile = File.Create(resultPath))
        OutStream.CopyTo(resultFile);

导出的下一种方法

private void Exporting(Stream template)
{
    using (var workbook = SpreadsheetDocument.Open(template, true, new OpenSettings                          { AutoSave = true }))
    {
        // Replace shared strings
        SharedStringTablePart sharedStringsPart = workbook.WorkbookPart.SharedStringTablePart;
        IEnumerable<Text> sharedStringTextElements = sharedStringsPart.SharedStringTable.Descendants<Text>();
        DoReplace(sharedStringTextElements);
        // Replace inline strings
        IEnumerable<WorksheetPart> worksheetParts = workbook.GetPartsOfType<WorksheetPart>();
        foreach (var worksheet in worksheetParts)
        {
            DoReplace(worksheet.Worksheet.Descendants<Text>());
        }
        int z = 40;
        foreach (System.Data.DataRow row in ExcelWorkXLSX.ToOut.Rows)
        {
            for (int i = 0; i < row.ItemArray.Count(); i++)
            { 
                ExcelWorkXLSX.InsertText(workbook, row.ItemArray.ElementAt(i).ToString(), getColumnName(i), Convert.ToUInt32(z)); }
                z++;
            }
        }
    }
}

但是这个片段要输出DataTable slooooooooooooooooooooooooowwwwwww …

如何快速，真实地将DataTable导出到Excel？

回答：

我写了这个简单的例子。这个对我有用。我只用一个数据集和一个表进行了测试，但是我想这对您来说足够了。

考虑到我将所有单元格都视为String（甚至不是SharedStrings）。如果要使用SharedStrings，则可能需要稍微调整一下示例。

编辑：若要进行此工作，必须将WindowsBase和DocumentFormat.OpenXml引用添加到项目。

请享用，

private void ExportDataSet(DataSet ds, string destination)
        {
            using (var workbook = SpreadsheetDocument.Create(destination, 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();
                foreach (System.Data.DataTable table in ds.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);
                    uint sheetId = 1;
                    if (sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Count() > 0)
                    {
                        sheetId =
                            sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Select(s => s.SheetId.Value).Max() + 1;
                    }
                    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 (System.Data.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 (System.Data.DataRow dsrow in table.Rows)
                    {
                        DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
                        foreach (String col in columns)
                        {
                            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);
                    }
                }
            }
        }