代码积累：导出数据为XML格式

 

private void exportToExcelReportFile(DataTable ds, string fileName, string rptName)  
    {  
        string filesPath = "";  
        System.IO.StreamWriter excelDoc;  
        excelDoc = new System.IO.StreamWriter(fileName);  
        const string startExcelXML = "<xml version>\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 <Styles>\r\n " +  
              "<Style ss:ID=\"Default\" ss:Name=\"Normal\">\r\n " +  
              "<Alignment ss:Vertical=\"Center\"/>\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=\"0.00\"/>\r\n </Style>\r\n " +  
              "<Style ss:ID=\"Integer\">\r\n <NumberFormat " +  
              "ss:Format=\"0\"/>\r\n </Style>\r\n <Style " +  
              "ss:ID=\"DateTimeLiteral\">\r\n <NumberFormat " +  
              "ss:Format=\"mm/dd/yyyy hh:mm AM/PM\"/>\r\n </Style>\r\n " +  
              "<Style ss:ID=\"DateLiteral\">\r\n <NumberFormat " +  
              "ss:Format=\"mm/dd/yyyy;@\"/>\r\n </Style>\r\n " +  
              "</Styles>\r\n ";  
        const string endExcelXML = "</Workbook>";  
        string rptNames = "";  
        int rowCount = 0;  
        int sheetCount = 1;  
        excelDoc.Write(startExcelXML);  
        excelDoc.Write("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");  
        excelDoc.Write("<Table>");  
 
        //Add Sql Where Infomation  
        excelDoc.Write("<Row>");  
        excelDoc.Write("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");  
        excelDoc.Write(oneAndEightTitleInfo);  
        excelDoc.Write("</Data></Cell>");  
        excelDoc.Write("</Row>");  
 
        excelDoc.Write("<Row>");  
        for (int x = 0; x < ds.Columns.Count; x++)  
        {  
            excelDoc.Write("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");  
            excelDoc.Write(ds.Columns[x].ColumnName);  
            excelDoc.Write("</Data></Cell>");  
        }  
        excelDoc.Write("</Row>");  
        rptNames = rptNames + ".xml";  
        filesPath = Request.PhysicalApplicationPath + directoryPath + rptName;  
        foreach (DataRow x in ds.Rows)  
        {  
            rowCount++;  
            //if the number of rows is > 64000 create a new page to continue output  
            if (rowCount == 64000)  
            {  
                rowCount = 0;  
                sheetCount++;  
                excelDoc.Write("</Table>");  
                excelDoc.Write(" </Worksheet>");  
                excelDoc.Write("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");  
                excelDoc.Write("<Table>");  
            }  
            excelDoc.Write("<Row>"); //ID=" + rowCount + "  
            for (int y = 0; y < ds.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":  
                        DateTime XMLDate = (DateTime)x[y];  
                        string XMLDatetoString = "";  
                        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());  
                        if (XMLDate.Hour > 0 | XMLDate.Minute > 0)  
                        {  
                            excelDoc.Write("<Cell ss:StyleID=\"DateTimeLiteral\">" +  
                                         "<Data ss:Type=\"DateTime\">");  
                        }  
                        else 
                        {  
                            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>");  
        excelDoc.Write(endExcelXML);  
        excelDoc.Close();  
    }