如何使用C#创建Excel电子表格而不需要在运行代码的计算机上安装Excel?


当前回答

使用Open XML SDK 2.0 for Microsoft Office怎么样?

一些好处:

不需要安装Office由Microsoft制作=像样的MSDN文档只有一个.Net dll可用于项目SDK附带了许多工具,如diff、验证器等

链接:

githubMSDN主登录“How Do I…”起始页blogsMSDN brian_jones发布SDKblogs.MSDN brian_jones描述SDK处理大型文件而不崩溃(与DOM方法不同)

其他回答

我重新编码了代码,现在可以创建.xls文件,稍后可以转换为Excel 2003 Open XML格式。

private static void exportToExcel(DataSet source, string fileName)
    {
        // Documentacion en:
        // https://en.wikipedia.org/wiki/Microsoft_Office_XML_formats
        // https://answers.microsoft.com/en-us/msoffice/forum/all/how-to-save-office-ms-xml-as-xlsx-file/4a77dae5-6855-457d-8359-e7b537beb1db
        // https://riptutorial.com/es/openxml

        const string startExcelXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n"+
                 "<?mso-application progid=\"Excel.Sheet\"?>\r\n" +
                 "<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"\r\n" +
                 "xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\n " +
                 "xmlns:x=\"urn:schemas-microsoft-com:office:excel\"\r\n " +
                 "xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"\r\n " +
                 "xmlns:html=\"http://www.w3.org/TR/REC-html40\">\r\n " +
                 "xmlns:html=\"https://www.w3.org/TR/html401/\">\r\n " +

                 "<DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">\r\n " +
                 "  <Version>16.00</Version>\r\n " +
                 "</DocumentProperties>\r\n " +
                 " <OfficeDocumentSettings xmlns=\"urn:schemas-microsoft-com:office:office\">\r\n " +
                 "  <AllowPNG/>\r\n " +
                 " </OfficeDocumentSettings>\r\n " +

                 " <ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">\r\n " +
                 "  <WindowHeight>9750</WindowHeight>\r\n " +
                 "  <WindowWidth>24000</WindowWidth>\r\n " +
                 "  <WindowTopX>0</WindowTopX>\r\n " +
                 "  <WindowTopY>0</WindowTopY>\r\n " +
                 "  <RefModeR1C1/>\r\n " +
                 "  <ProtectStructure>False</ProtectStructure>\r\n " +
                 "  <ProtectWindows>False</ProtectWindows>\r\n " +
                 " </ExcelWorkbook>\r\n " +

                 "<Styles>\r\n " +
                 "<Style ss:ID=\"Default\" ss:Name=\"Normal\">\r\n " +
                 "<Alignment ss:Vertical=\"Bottom\"/>\r\n <Borders/>" +
                 "\r\n <Font/>\r\n <Interior/>\r\n <NumberFormat/>" +
                 "\r\n <Protection/>\r\n </Style>\r\n " +
                 "<Style ss:ID=\"BoldColumn\">\r\n <Font " +
                 "x:Family=\"Swiss\" ss:Bold=\"1\"/>\r\n </Style>\r\n " +
                 "<Style ss:ID=\"StringLiteral\">\r\n <NumberFormat" +
                 " ss:Format=\"@\"/>\r\n </Style>\r\n <Style " +
                 "ss:ID=\"Decimal\">\r\n <NumberFormat " +
                 "ss:Format=\"0.0000\"/>\r\n </Style>\r\n " +
                 "<Style ss:ID=\"Integer\">\r\n <NumberFormat/>" +
                 "ss:Format=\"0\"/>\r\n </Style>\r\n <Style " +
                 "ss:ID=\"DateLiteral\">\r\n <NumberFormat " +
                 "ss:Format=\"dd/mm/yyyy;@\"/>\r\n </Style>\r\n " +
                 "</Styles>\r\n ";
        System.IO.StreamWriter excelDoc = null;
        excelDoc = new System.IO.StreamWriter(fileName,false);

        int sheetCount = 1;
        excelDoc.Write(startExcelXML);
        foreach (DataTable table in source.Tables)
        {
            int rowCount = 0;
            excelDoc.Write("<Worksheet ss:Name=\"" + table.TableName + "\">");
            excelDoc.Write("<Table>");
            excelDoc.Write("<Row>");
            for (int x = 0; x < table.Columns.Count; x++)
            {
                excelDoc.Write("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");
                excelDoc.Write(table.Columns[x].ColumnName);
                excelDoc.Write("</Data></Cell>");
            }
            excelDoc.Write("</Row>");
            foreach (DataRow x in table.Rows)
            {
                rowCount++;
                //if the number of rows is > 64000 create a new page to continue output
                if (rowCount == 1048576)
                {
                    rowCount = 0;
                    sheetCount++;
                    excelDoc.Write("</Table>");
                    excelDoc.Write(" </Worksheet>");
                    excelDoc.Write("<Worksheet ss:Name=\"" + table.TableName + "\">");
                    excelDoc.Write("<Table>");
                }
                excelDoc.Write("<Row>"); //ID=" + rowCount + "
                for (int y = 0; y < table.Columns.Count; y++)
                {
                    System.Type rowType;
                    rowType = x[y].GetType();
                    switch (rowType.ToString())
                    {
                        case "System.String":
                            string XMLstring = x[y].ToString();
                            XMLstring = XMLstring.Trim();
                            XMLstring = XMLstring.Replace("&", "&");
                            XMLstring = XMLstring.Replace(">", ">");
                            XMLstring = XMLstring.Replace("<", "<");
                            excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
                                           "<Data ss:Type=\"String\">");
                            excelDoc.Write(XMLstring);
                            excelDoc.Write("</Data></Cell>");
                            break;
                        case "System.DateTime":
                            //Excel has a specific Date Format of YYYY-MM-DD followed by  
                            //the letter 'T' then hh:mm:sss.lll Example 2005-01-31T24:01:21.000
                            //The Following Code puts the date stored in XMLDate 
                            //to the format above
                            DateTime XMLDate = (DateTime)x[y];
                            string XMLDatetoString = ""; //Excel Converted Date
                            XMLDatetoString = XMLDate.Year.ToString() +
                                 "-" +
                                 (XMLDate.Month < 10 ? "0" +
                                 XMLDate.Month.ToString() : XMLDate.Month.ToString()) +
                                 "-" +
                                 (XMLDate.Day < 10 ? "0" +
                                 XMLDate.Day.ToString() : XMLDate.Day.ToString()) +
                                 "T" +
                                 (XMLDate.Hour < 10 ? "0" +
                                 XMLDate.Hour.ToString() : XMLDate.Hour.ToString()) +
                                 ":" +
                                 (XMLDate.Minute < 10 ? "0" +
                                 XMLDate.Minute.ToString() : XMLDate.Minute.ToString()) +
                                 ":" +
                                 (XMLDate.Second < 10 ? "0" +
                                 XMLDate.Second.ToString() : XMLDate.Second.ToString()) +
                                 ".000";
                            excelDoc.Write("<Cell ss:StyleID=\"DateLiteral\">" +
                                         "<Data ss:Type=\"DateTime\">");
                            excelDoc.Write(XMLDatetoString);
                            excelDoc.Write("</Data></Cell>");
                            break;
                        case "System.Boolean":
                            excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
                                        "<Data ss:Type=\"String\">");
                            excelDoc.Write(x[y].ToString());
                            excelDoc.Write("</Data></Cell>");
                            break;
                        case "System.Int16":
                        case "System.Int32":
                        case "System.Int64":
                        case "System.Byte":
                            excelDoc.Write("<Cell ss:StyleID=\"Integer\">" +
                                    "<Data ss:Type=\"Number\">");
                            excelDoc.Write(x[y].ToString());
                            excelDoc.Write("</Data></Cell>");
                            break;
                        case "System.Decimal":
                        case "System.Double":
                            excelDoc.Write("<Cell ss:StyleID=\"Decimal\">" +
                                  "<Data ss:Type=\"Number\">");
                            excelDoc.Write(x[y].ToString());
                            excelDoc.Write("</Data></Cell>");
                            break;
                        case "System.DBNull":
                            excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
                                  "<Data ss:Type=\"String\">");
                            excelDoc.Write("");
                            excelDoc.Write("</Data></Cell>");
                            break;
                        default:
                            throw (new Exception(rowType.ToString() + " not handled."));
                    }
                }
                excelDoc.Write("</Row>");
            }
            excelDoc.Write("</Table>");
            excelDoc.Write("</Worksheet>");               
            sheetCount++;
        }

        const string endExcelOptions1 = "\r\n<WorksheetOptions xmlns=\"urn:schemas-microsoft-com:office:excel\">\r\n" +
            "<Selected/>\r\n" +
            "<ProtectObjects>False</ProtectObjects>\r\n" +
            "<ProtectScenarios>False</ProtectScenarios>\r\n" +
            "</WorksheetOptions>\r\n";

        excelDoc.Write(endExcelOptions1);
        excelDoc.Write("</Workbook>");
        excelDoc.Close();
    }

我最近刚刚使用了FlexCel.NET,发现它是一个优秀的库!我对太多的软件产品不这么说。在这里进行整个销售宣传没有意义,你可以阅读他们网站上的所有功能。

这是一个商业产品,但如果你购买它,你会得到完整的源代码。所以我想,如果你真的想,你可以将它编译成你的程序集。否则,它只是一个额外的程序集来xcopy-没有配置或安装或类似的东西。

我认为,如果没有第三方库,您将找不到任何方法来做到这一点,因为.NET框架显然没有内置的支持,OLE自动化只是一个痛苦的世界。

各种Office 2003 XML库适用于较小的excel文件。然而,我发现以XML格式保存的大型工作簿的大小是一个问题。例如,我使用的新XLSX格式的工作簿将是40MB(当然也更紧凑),它将变成360MB的XML文件。

就我的研究而言,有两个商业软件包允许输出到较旧的二进制文件格式。他们是:

宝石盒ComponentOne Excel

两者都不便宜(我认为分别为500美元和800美元)。但两者都独立于Excel本身。

我会好奇的是OpenOffice.org之类的Excel输出模块。我想知道它们是否可以从Java移植到.Net。

您可以使用OLEDB创建和操作Excel文件。选中此项:使用OLEDB读写Excel。

典型示例:

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp\\test.xls;Extended Properties='Excel 8.0;HDR=Yes'"))
{
  conn.Open();
  OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([Column1] string, [Column2] string)", conn);
  cmd.ExecuteNonQuery();
}

编辑-更多链接:

嘿,脚本人!如何在不使用Excel的情况下从Excel读取?如何使用ADO.NET在Visual Basic.NET中检索和修改Excel工作簿中的记录使用ADO.NET C#DbProviderFactory读写Excel电子表格

也可以使用Aspose这样的第三方库。

此库的优点是它不需要在您的计算机上安装Excel,这在您的情况下是理想的。