Silverlight DataGrid: Export to excel or csv

Question

Is there a way I can export my Silverlight DataGrid data to excel or csv?

I searched the web but can\'t find any examples!

Thanks a lot

Answer 1

I know this is an old post but it did help me. I have done some edits to make it work with silverlight 4, converts and excel. I wanted the fast export so I first use CSV then open it with excel. This code works silverlight web and oob elevated trust. In Web will not open in excel.

     private static void OpenExcelFile(string Path)
    {
        dynamic excelApp;
        excelApp = AutomationFactory.CreateObject("Excel.Application");
        dynamic workbook = excelApp.workbooks;
        object oMissing = Missing.Value;

        workbook = excelApp.Workbooks.Open(Path,

           oMissing, oMissing, oMissing, oMissing, oMissing,

           oMissing, oMissing, oMissing, oMissing, oMissing,

           oMissing, oMissing, oMissing, oMissing);



        dynamic sheet = excelApp.ActiveSheet;


        // open the existing sheet


        sheet.Cells.EntireColumn.AutoFit();
        excelApp.Visible = true;
    }
    private static string FormatCSVField(string data)
    {
        return String.Format("\"{0}\"",
            data.Replace("\"", "\"\"\"")
            .Replace("\n", "")
            .Replace("\r", "")
            );
    }
   public  static string ExportDataGrid(DataGrid grid,string SaveFileName,bool AutoOpen)
    {
        string colPath;
        System.Reflection.PropertyInfo propInfo;
        System.Windows.Data.Binding binding;
        System.Text.StringBuilder strBuilder = new System.Text.StringBuilder();
       var source = grid.ItemsSource;

        if (source == null)
            return "";

        List headers = new List();
        grid.Columns.ToList().ForEach(col =>
        {
            if (col is DataGridBoundColumn)
            {
                headers.Add(FormatCSVField(col.Header.ToString()));
            }
        });
        strBuilder
        .Append(String.Join(",", headers.ToArray()))
        .Append("\r\n");

        foreach (var data in source)
        {
                List csvRow = new List();
                foreach (DataGridColumn col in grid.Columns)
                {
                    if (col is DataGridBoundColumn)
                    {
                        binding = (col as DataGridBoundColumn).Binding;
                        colPath = binding.Path.Path;

                        propInfo = data.GetType().GetProperty(colPath);
                        if (propInfo != null)
                        {
                            string valueConverted = "";
                            if (binding.Converter.GetType().ToString() != "System.Windows.Controls.DataGridValueConverter")
                                valueConverted = binding.Converter.Convert(propInfo.GetValue(data, null), typeof(System.String), binding.ConverterParameter, System.Globalization.CultureInfo.CurrentCulture).ToString();
                            else
                                valueConverted = FormatCSVField(propInfo.GetValue(data, null) == null ? "" : propInfo.GetValue(data, null).ToString());

                            csvRow.Add(valueConverted.ToString());
                        }
                    }
                }
                strBuilder
                    .Append(String.Join(",", csvRow.ToArray()))
                    .Append("\r\n");
            }

        if (AutomationFactory.IsAvailable)
        {
            var sampleFile = "\\" + SaveFileName;
            var path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
            path += "\\Pement";


            if (!System.IO.Directory.Exists(path))
            {
                System.IO.Directory.CreateDirectory(path);
            }
            else
            {
                var files = System.IO.Directory.EnumerateFiles(path);
                foreach (var item in files)
                {
                    try
                    {
                        System.IO.File.Delete(item);
                    }
                    catch { }
                }
            }

            StreamWriter sw = File.CreateText(path + sampleFile);
            sw.WriteLine(strBuilder.ToString());
            sw.Close();

            if (AutoOpen)
                OpenExcelFile(path + sampleFile, true, true);
        }
        else
        {
            SaveFileDialog sfd = new SaveFileDialog()
            {
                DefaultExt = "csv",
                Filter = "CSV Files (*.csv)|*.csv|All files (*.*)|*.*",
                FilterIndex = 1
            };
            if (sfd.ShowDialog() == true)
            {
                using (Stream stream = sfd.OpenFile())
                {
                    using (StreamWriter writer = new StreamWriter(stream))
                    {
                        writer.Write(strBuilder.ToString());
                        writer.Close();
                    }
                    stream.Close();
                }
            } 
        }
        return strBuilder.ToString();
    }