CODEWITHSUNDEEP
c#xmlxlsx
Fridolin
Fridolin

Reputation: 85

C# .xml to .xlsx how?

I want to convert a complete XML file to XLSX but I'm not sure how I can do it. I searched at Google for a Solutions but the most time I only find the way into the other direction for example XLSX to XML. On the Microsoft Page I found a xmlconvertclass, but I'm not sure how I can work with the class.

Did someone do something like this in the past and can help me?

Upvotes: 8

Views: 18820

Answers (5)

Cylian
Cylian

Reputation: 11182

In case someone needed to convert an XML (tabular data) file to XLSX without Microsoft Excel. Here below an NPOI + C# solution....

Sample XML (tabular data):

<rows>
    <row>
        <col_1>a</col_1>
        <col_2>b</col_2>
        <col_3>c</col_3>
        <col_4>d</col_4>
        <col_5>e</col_5>
    </row>
    <row>
        <col_1>f</col_1>
        <col_2>h</col_2>
        <col_3>h</col_3>
        <col_4>i</col_4>
        <col_5>j</col_5>
    </row>
    <row>
        <col_1>k</col_1>
        <col_2>l</col_2>
        <col_3>m</col_3>
        <col_4>n</col_4>
        <col_5>o</col_5>
    </row>
</rows>

C# code:

class clsNpoi
{
    public static bool convert_xml_to_xlsx(string xml_path, string row_element_name)
    {
        try
        {
            //load xml
            XElement elem = XElement.Load(xml_path);
            if (elem.XPathSelectElements(row_element_name).Count() == 0)
            {
                return false; // exit if no row elements are found
            }
            else
            {
                //process;
                string xpath_text = "//" + row_element_name;
                XSSFWorkbook wb = new XSSFWorkbook();
                XSSFSheet sh = (XSSFSheet)wb.CreateSheet(Path.GetFileNameWithoutExtension(xml_path));
                //get column heads;
                var heading_items = elem.XPathSelectElements(xpath_text).First().Elements().Select(e => e.Name.LocalName).Distinct().ToArray();
                //get row items;
                var row_elems = elem.XPathSelectElements("//" + row_element_name).ToArray();
                int row_index = 0, col_index = 0;
                foreach (XElement row_elem in row_elems)
                {
                    sh.CreateRow(row_index);
                    if (row_index == 0)
                    {
                        foreach (string heading_item in heading_items)
                        {
                            sh.GetRow(row_index).CreateCell(col_index);
                            sh.GetRow(row_index).GetCell(col_index).SetCellValue(heading_item);
                            sh.AutoSizeColumn(col_index);
                            col_index++;
                        }
                        row_index++; col_index = 0;
                        sh.CreateRow(row_index);
                    }
                    for (col_index = 0; col_index < heading_items.Count(); col_index++)
                    {
                        sh.GetRow(row_index).CreateCell(col_index);
                        //discard blank / null values -- set "-" as default !important step
                        var content_value = (string.IsNullOrEmpty(row_elem.Element(heading_items[col_index]).Value) || string.IsNullOrWhiteSpace(row_elem.Element(heading_items[col_index]).Value)) ? "-" : row_elem.Element(heading_items[col_index]).Value;
                        sh.GetRow(row_index).GetCell(col_index).SetCellValue(content_value);
                    }
                    row_index++; col_index = 0;
                }
                FileStream fs = new FileStream(Path.ChangeExtension(xml_path, ".xlsx"), FileMode.Create, FileAccess.Write);
                wb.Write(fs);
                fs.Close();
                wb.Clear();
                return true;
            }
            
        }
        catch (Exception ex)
        {
            Debug.Print(ex.ToString());
            return false;
        }
    }

Call as clsNpoi.convert_xml_to_xlsx(<xml_path>, "row"); and the result...

enter image description here

For java usage visit Busy Developers' Guide to HSSF and XSSF Features

For c# usage visit nissl-lab / npoi

Hope this helps someone :)

Upvotes: 0

Gun
Gun

Reputation: 1411

Please Use the below code if you are getting multiple tables from dataset and you should take care of the logic of inserting data tables into excel.

    static void Main(string[] args)
    {
        DataSet ds = new DataSet();

        //Convert the XML into Dataset
        ds.ReadXml(@"E:\movies.xml");

        //Retrieve the table fron Dataset
        //DataTable dt = ds.Tables[0];

        // Create an Excel object
        Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

        //Create workbook object
        string str = @"E:\test.xlsx";
        Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Open(Filename: str);

        foreach (DataTable tab in ds.Tables)
        {
            FromDataTableToExcel(tab,excel,workbook);
        }

        //Save the workbook
        workbook.Save();

        //Close the Workbook
        workbook.Close();

        // Finally Quit the Application
        ((Microsoft.Office.Interop.Excel._Application)excel).Quit();

    }

    static void FromDataTableToExcel(DataTable dt, Microsoft.Office.Interop.Excel.Application excel, Microsoft.Office.Interop.Excel.Workbook workbook)
    { 
        //Create worksheet object
        Microsoft.Office.Interop.Excel.Worksheet worksheet = workbook.ActiveSheet;

        // Column Headings
        int iColumn = worksheet.UsedRange.Columns.Count-1;
        int iColumn1 = iColumn;
        int iColumn2 = iColumn;

        foreach (DataColumn c in dt.Columns)
        {
            iColumn++;
            excel.Cells[1, iColumn] = c.ColumnName;
        }

        // Row Data
        int iRow = 0;

        foreach (DataRow dr in dt.Rows)
        {
            iRow++;

            // Row's Cell Data                
            foreach (DataColumn c in dt.Columns)
            {
                iColumn1++;
                excel.Cells[iRow + 1, iColumn1] = dr[c.ColumnName];
            }

            iColumn1 = iColumn2;
        }

        ((Microsoft.Office.Interop.Excel._Worksheet)worksheet).Activate();

    }

Upvotes: 0

Gun
Gun

Reputation: 1411

Try the Below code in which i converted XML into DataSet and later exported DataSet into Excel

        DataSet ds = new DataSet();

        //Convert the XML into Dataset
        ds.ReadXml(@"E:\movie.xml");

        //Retrieve the table fron Dataset
        DataTable dt = ds.Tables[0];

        // Create an Excel object
        Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();

        //Create workbook object
        string str = @"E:\test.xlsx";
        Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Open(Filename: str);

        //Create worksheet object
        Microsoft.Office.Interop.Excel.Worksheet worksheet = workbook.ActiveSheet;

        // Column Headings
        int iColumn = 0;

        foreach (DataColumn c in dt.Columns)
        {
            iColumn++;
            excel.Cells[1, iColumn] = c.ColumnName;
        }

        // Row Data
        int iRow = worksheet.UsedRange.Rows.Count - 1;

        foreach (DataRow dr in dt.Rows)
        {
            iRow++;

            // Row's Cell Data
            iColumn = 0;
            foreach (DataColumn c in dt.Columns)
            {
                iColumn++;
                excel.Cells[iRow + 1, iColumn] = dr[c.ColumnName];
            }
        }

        ((Microsoft.Office.Interop.Excel._Worksheet)worksheet).Activate();

        //Save the workbook
        workbook.Save();

        //Close the Workbook
        workbook.Close();

        // Finally Quit the Application
        ((Microsoft.Office.Interop.Excel._Application)excel).Quit();

Upvotes: 5

Steve B
Steve B

Reputation: 37660

A far more simpler solution: use data sources in Excel.

  1. Create a "template" Xslx that matches your need.
  2. For each xml data files, add a data connection to the xml file.
  3. Set up, if you want, the data connection to refresh each time the file is opened.

This works out-of-the box, with no code at all (excluding of course the xml generation).

Optionally, you may publish your Xml through an ASP.Net application (dynamically or not), and set up the data connection to gather the data from this asp.net app.

Upvotes: 2

James
James

Reputation: 82096

You will need to read the schema for the XLSX file format and write an XSLT file to transform your custom XML file.

.NET has very good XML support so something like this should be fairly trivial, it will be actual mapping from your XML format to XSLT where the real effort is needed.

Upvotes: 1

Related Questions