private void btnExport_Click(object sender, RoutedEventArgs e)
        {
            string         extension = "xls";
            SaveFileDialog dialog    = new SaveFileDialog()
            {
                DefaultExt  = extension,
                Filter      = String.Format("{1} files (.{0})|.{0}|All files (.)|.", extension, "Excel"),
                FilterIndex = 1
            };

            if (dialog.ShowDialog() == true)
            {
                var col0Visibility = radGridView.Columns[0].IsVisible;
                radGridView.Columns[0].IsVisible = false;//ستون هایی که نمی خواهیم در اکسل دیده شوند
                var opt = new GridViewExportOptions()
                {
                    Format            = ExportFormat.Html,
                    ShowColumnHeaders = true,
                    ShowColumnFooters = true,
                    ShowGroupFooters  = false,
                };
                using (Stream stream = dialog.OpenFile())
                {
                    radGridView.Export(stream,
                                       opt);
                }
                radGridView.Columns[0].IsVisible = col0Visibility;//این ستون در بالا مخفی شده بود، حالا به حالت اول باز گردانده می شود
            }
        }
        public void Export(object parameter)
        {
            var grid = parameter as RadGridView;

            if (grid != null)
            {
                grid.InitializingExcelMLStyles -= InitializingExcelMLStyles;
                grid.InitializingExcelMLStyles += InitializingExcelMLStyles;
                grid.ElementExporting          -= this.ElementExporting;
                grid.ElementExporting          += this.ElementExporting;

                string extension = "xls";
                var    format    = ExportFormat.ExcelML;

                var dialog = new SaveFileDialog();
                dialog.DefaultExt  = extension;
                dialog.Filter      = String.Format("Excel files (*.{0})|*.{0}|All files (*.*)|*.*", extension);
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (var stream = dialog.OpenFile())
                    {
                        var exportOptions = new GridViewExportOptions();
                        exportOptions.Format            = format;
                        exportOptions.ShowColumnFooters = true;
                        exportOptions.ShowColumnHeaders = true;
                        exportOptions.ShowGroupFooters  = true;

                        grid.Export(stream, exportOptions);
                    }
                }
            }
        }
Пример #3
0
        public static void ExcelExport(RadGridView gv)
        {
            if (gv.HasItems)
            {
                SaveFileDialog dialog = new SaveFileDialog();
                dialog.DefaultExt  = "xls";
                dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", "xls", "Excel");
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (Stream stream = dialog.OpenFile())
                    {
                        GridViewExportOptions exportOptions = new GridViewExportOptions();
                        exportOptions.Format            = ExportFormat.Html;
                        exportOptions.Encoding          = Encoding.BigEndianUnicode;
                        exportOptions.ShowColumnFooters = true;
                        exportOptions.ShowColumnHeaders = true;
                        //exportOptions.ShowGroupFooters = true;
                        gv.Export(stream, exportOptions);
                    }
                    MessageBox.Show("导出完毕");
                }
            }
            else
            {
                MessageBox.Show("没有可导出的数据");
            }
        }
        public void Export(object parameter)
        {
            RadGridView grid = parameter as RadGridView;

            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                grid.ElementExported -= this.ElementExported;
                grid.ElementExported += this.ElementExported;

                string       extension = "xls";
                ExportFormat format    = ExportFormat.Html;

                SaveFileDialog dialog = new SaveFileDialog();
                dialog.DefaultExt  = extension;
                dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, "Excel");
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (Stream stream = dialog.OpenFile())
                    {
                        GridViewExportOptions options = new GridViewExportOptions();
                        options.Format            = format;
                        options.ShowColumnHeaders = true;
                        options.Encoding          = System.Text.Encoding.UTF8;
                        grid.Export(stream, options);
                    }
                }
            }
        }
Пример #5
0
        //Crystal View DataSourch
        public DataTable CristalReportDataSourch(Telerik.Windows.Controls.RadGridView radgridview, DataTable tempDataTable, Variables.OperationTrypes oprationType)
        {
            string                txtline          = string.Empty;
            NecessaryFunction     necessaryElement = new NecessaryFunction();
            GridViewExportOptions exportOption     = new GridViewExportOptions();

            exportOption.Format = ExportFormat.Text;
            string fileNameWithPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DATA_EXPORT.txt");

            necessaryElement.CreateTextFile(fileNameWithPath);
            FileStream fileStream = new FileStream(fileNameWithPath, FileMode.OpenOrCreate, FileAccess.Write);

            radgridview.Export((Stream)fileStream, exportOption);
            fileStream.Close();
            fileStream.Dispose();
            StreamReader txtReader = new StreamReader(fileNameWithPath);

            while ((txtline = txtReader.ReadLine()) != null)
            {
                char[]   delimiterChars = { ' ', '"', '\t' };
                String[] columnData     = txtline.Split(delimiterChars, StringSplitOptions.RemoveEmptyEntries);
                if (oprationType.Equals(Variables.OperationTrypes.Sales))
                {
                    tempDataTable.Rows.Add(columnData[0].Trim(), columnData[1].Trim(), columnData[2].Trim(), columnData[3].Trim());
                }
                else if (oprationType.Equals(Variables.OperationTrypes.InvPurDebCre))
                {
                    tempDataTable.Rows.Add(columnData[0].Trim(), columnData[3].Trim(), columnData[4].Trim(), columnData[5].Trim(), columnData[6].Trim(), columnData[7].Trim(), columnData[8].Trim(), columnData[9].Trim(), columnData[11].Trim(), columnData[10].Trim());
                }
            }
            txtReader.Close();
            txtReader.Dispose();
            necessaryElement.DeleteFile(fileNameWithPath);
            return(tempDataTable);
        }
Пример #6
0
 //Crystal View DataSourch
 public DataTable CristalReportDataSourch(Telerik.Windows.Controls.RadGridView radgridview, DataTable tempDataTable, Variables.OperationTrypes oprationType)
 {
     string txtline = string.Empty;
     NecessaryFunction necessaryElement = new NecessaryFunction();
     GridViewExportOptions exportOption = new GridViewExportOptions();
     exportOption.Format = ExportFormat.Text;
     string fileNameWithPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DATA_EXPORT.txt");
     necessaryElement.CreateTextFile(fileNameWithPath);
     FileStream fileStream = new FileStream(fileNameWithPath, FileMode.OpenOrCreate, FileAccess.Write);
     radgridview.Export((Stream)fileStream, exportOption);
     fileStream.Close();
     fileStream.Dispose();
     StreamReader txtReader = new StreamReader(fileNameWithPath);
     while ((txtline=txtReader.ReadLine())!=null)
     {
         char[] delimiterChars = { ' ', '"', '\t' };
         String[] columnData = txtline.Split(delimiterChars,StringSplitOptions.RemoveEmptyEntries);
         if (oprationType.Equals(Variables.OperationTrypes.Sales))
         {
           tempDataTable.Rows.Add(columnData[0].Trim(), columnData[1].Trim(), columnData[2].Trim(), columnData[3].Trim());
         }
         else if (oprationType.Equals(Variables.OperationTrypes.InvPurDebCre))
         {
             tempDataTable.Rows.Add(columnData[0].Trim(), columnData[3].Trim(), columnData[4].Trim(), columnData[5].Trim(), columnData[6].Trim(), columnData[7].Trim(), columnData[8].Trim(), columnData[9].Trim(), columnData[11].Trim(), columnData[10].Trim());
         }
     }
     txtReader.Close();
     txtReader.Dispose();
     necessaryElement.DeleteFile(fileNameWithPath);
     return tempDataTable;
 }
Пример #7
0
        public void Export(object parameter)
        {
            var grid = parameter as RadGridView;

            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                string extension = "";
                var    format    = ExportFormat.Html;

                switch (SelectedExportFormat)
                {
                case "Excel":
                    extension = "xls";
                    format    = ExportFormat.Html;
                    break;

                case "ExcelML":
                    extension = "xml";
                    format    = ExportFormat.ExcelML;
                    break;

                case "Word":
                    extension = "doc";
                    format    = ExportFormat.Html;
                    break;

                case "Csv":
                    extension = "csv";
                    format    = ExportFormat.Csv;
                    break;
                }

                var dialog = new SaveFileDialog();
                dialog.DefaultExt  = extension;
                dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, SelectedExportFormat);
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (var stream = dialog.OpenFile())
                    {
                        var exportOptions = new GridViewExportOptions();
                        exportOptions.Format            = format;
                        exportOptions.ShowColumnFooters = true;
                        exportOptions.ShowColumnHeaders = true;
                        exportOptions.ShowGroupFooters  = true;
                        exportOptions.Encoding          = Encoding.Unicode;

                        grid.Export(stream, exportOptions);
                    }
                }
            }
        }
Пример #8
0
 /// <summary>
 /// 设置导出样式
 /// </summary>
 /// <returns></returns>
 public static GridViewExportOptions SetGridViewExportOptions()
 {
     GridViewExportOptions exportOptions = new GridViewExportOptions();
     exportOptions.Format = ExportFormat.Html;
     exportOptions.Encoding = System.Text.Encoding.UTF8;
     exportOptions.ShowColumnFooters = false;
     exportOptions.ShowColumnHeaders = true;
     exportOptions.ShowGroupFooters = false;
     return exportOptions;
 }
Пример #9
0
        public static void BillExportExcel(string title, RadGridView gv, object item)
        {
            var row = (GridViewRow)gv.ItemContainerGenerator.ContainerFromItem(item);//View.Extension.UIHelper.GetAncestor<GridViewRow>(sender as RadButton);

            row.DetailsVisibility = Visibility.Visible;
            var detailsPresenter = row.ChildrenOfType <DetailsPresenter>().FirstOrDefault();
            // same as e.DetailsElement from gridView_RowDetailsVisibilityChanged
            var gvDetails = (RadGridView)detailsPresenter.Content;

            Microsoft.Win32.SaveFileDialog dialog = new Microsoft.Win32.SaveFileDialog();
            dialog.DefaultExt  = "xls";
            dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", "xls", "Excel");
            dialog.FilterIndex = 1;

            if (dialog.ShowDialog() == true)
            {
                try
                {
                    using (System.IO.Stream stream = dialog.OpenFile())
                    {
                        System.IO.StreamWriter writer = new System.IO.StreamWriter(stream);
                        writer.WriteLine(@"<table border=""1"">");
                        writer.WriteLine(@"<tr><td style=""background-color:#CCC;text-align:center;""><b>");
                        writer.WriteLine(title);
                        writer.WriteLine("</b></td></tr><tr><td>");

                        foreach (var col in gv.Columns)
                        {
                            if (col.Header != null)//过滤没有列头(如标识列)的列
                            {
                                var colname = col.Header.ToString();
                                if (colname != "操作" && col is IExportableColumn && col.IsVisible)
                                {
                                    writer.Write(@"<b>{0}:</b> {1} <br />", colname, ((IExportableColumn)col).GetCellContent(item));
                                }
                            }
                        }
                        writer.WriteLine("</td></tr><tr><td>");
                        writer.Flush();
                        GridViewExportOptions exportOptions = new GridViewExportOptions();
                        exportOptions.Format            = ExportFormat.Html;
                        exportOptions.ShowColumnHeaders = true;
                        gvDetails.Export(stream, exportOptions);
                        writer.WriteLine("</td></tr></table>");
                        writer.Flush();
                    }
                    MessageBox.Show("导出完毕");
                }
                catch (Exception e)
                {
                    MessageBox.Show("导出失败,失败原因:\n" + e.Message);
                }
            }
        }
Пример #10
0
 /// <summary>
 /// 设置导出样式
 /// </summary>
 /// <returns></returns>
 public static GridViewExportOptions SetGridViewExportOptions()
 {
     var exportOptions = new GridViewExportOptions
         {
             Format = ExportFormat.Html,
             Encoding = System.Text.Encoding.UTF8,
             ShowColumnFooters = false,
             ShowColumnHeaders = true,
             ShowGroupFooters = false
         };
     return exportOptions;
 }
Пример #11
0
        private void gvExport_DataLoaded(object sender, EventArgs e)
        {
            if (gvExport.Items.Count > 1)
            {
                string extension = "xls";
                Microsoft.Win32.SaveFileDialog dialog = new Microsoft.Win32.SaveFileDialog()
                {
                    DefaultExt  = extension,
                    Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, "Excel"),
                    FilterIndex = 1
                };
                if (dialog.ShowDialog() == true)
                {
                    using (System.IO.Stream stream = dialog.OpenFile())
                    {
                        firstRow  = null;
                        firstCell = true;

                        gvExport.Visibility = System.Windows.Visibility.Visible;

                        gvExport.InitializingExcelMLStyles -= InitializingExcelMLStyles;
                        gvExport.InitializingExcelMLStyles += InitializingExcelMLStyles;
                        gvExport.ElementExporting          -= ElementExporting;
                        gvExport.ElementExporting          += ElementExporting;

                        GridViewExportOptions options = new GridViewExportOptions()
                        {
                            Format            = Telerik.Windows.Controls.ExportFormat.ExcelML,
                            Encoding          = Encoding.UTF8,
                            ShowColumnHeaders = false,
                            ShowColumnFooters = true,
                            ShowGroupFooters  = false
                        };
                        gvExport.Export(stream, options);

                        gvExport.Visibility = System.Windows.Visibility.Hidden;
                    }
                }
            }
            else
            {
                MessageBox.Show("No se encontraron pacientes para exportar con incidencias en los módulos seleccionados entre las fechas ingresadas para las áreas y usuarios seleccionados para exportar",
                                "Información", MessageBoxButton.OK, MessageBoxImage.Information);
            }
        }
Пример #12
0
        public void ExportWithOptions(object parameter, GridViewExportOptions exportOptions)
        {
            RadGridView grid = parameter as RadGridView;

            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                string extension = "";

                switch (SelectedExportFormat)
                {
                case "Excel": extension = "xls";
                    break;

                case "ExcelML": extension = "xml";
                    break;

                case "Word": extension = "doc";
                    break;

                case "Csv": extension = "csv";
                    break;
                }

                SaveFileDialog dialog = new SaveFileDialog();
                dialog.DefaultExt  = extension;
                dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, SelectedExportFormat);
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (Stream stream = dialog.OpenFile())
                    {
                        grid.Export(stream, exportOptions);
                    }
                }
            }
        }
		public void Export(object parameter)
		{
			var grid = parameter as RadGridView;
			if (grid != null)
			{
				grid.InitializingExcelMLStyles -= InitializingExcelMLStyles;
				grid.InitializingExcelMLStyles += InitializingExcelMLStyles;
				grid.ElementExporting -= this.ElementExporting;
				grid.ElementExporting += this.ElementExporting;

				string extension = "xls";
				var format = ExportFormat.ExcelML;

				var dialog = new SaveFileDialog();
				dialog.DefaultExt = extension;
				dialog.Filter = String.Format("Excel files (*.{0})|*.{0}|All files (*.*)|*.*", extension);
				dialog.FilterIndex = 1;

				if (dialog.ShowDialog() == true)
				{
					using (var stream = dialog.OpenFile())
					{
						var exportOptions = new GridViewExportOptions();
						exportOptions.Format = format;
						exportOptions.ShowColumnFooters = true;
						exportOptions.ShowColumnHeaders = true;
						exportOptions.ShowGroupFooters = true;

						grid.Export(stream, exportOptions);
					}
				}
			}
		}
Пример #14
0
        public void ExportWithHeader(List <object> parameter, List <Header> headers, List <bool> showFooter)
        {
            string       extension = "";
            ExportFormat format    = ExportFormat.Html;

            switch (SelectedExportFormat)
            {
            case "Excel": extension = "xls";
                format = ExportFormat.Html;
                break;

            case "ExcelML": extension = "xml";
                format = ExportFormat.ExcelML;
                break;

            case "Word": extension = "doc";
                format             = ExportFormat.Html;
                break;

            case "Csv": extension = "csv";
                format            = ExportFormat.Csv;
                break;
            }

            SaveFileDialog dialog = new SaveFileDialog();

            dialog.DefaultExt  = extension;
            dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, SelectedExportFormat);
            dialog.FilterIndex = 1;

            if (dialog.ShowDialog() == true)
            {
                using (Stream stream = dialog.OpenFile())
                {
                    StringBuilder sb = new StringBuilder();
                    for (int i = 0; i < parameter.Count; i++)
                    {
                        string      header = createHeaderStr(headers[i]);
                        RadGridView grid   = parameter[i] as RadGridView;
                        if (grid != null)
                        {
                            grid.ElementExporting -= this.ElementExporting;
                            grid.ElementExporting += this.ElementExporting;



                            GridViewExportOptions exportOptions = new GridViewExportOptions();
                            exportOptions.Format            = format;
                            exportOptions.ShowColumnFooters = showFooter[i];
                            exportOptions.ShowColumnHeaders = true;
                            exportOptions.ShowGroupFooters  = true;
                            exportOptions.Encoding          = Encoding.UTF8;

                            using (MemoryStream ms = new MemoryStream())
                            {
                                grid.Export(ms, exportOptions);

                                byte[] bs = new byte[ms.Length];
                                ms.Seek(0, SeekOrigin.Begin);
                                ms.Read(bs, 0, bs.Length);
                                string str  = Encoding.UTF8.GetString(bs, 0, bs.Length);
                                string str1 = str.Insert(str.IndexOf('>', 0) + 1, header);

                                sb.Append(str1);
                            }
                        }
                    }
                    byte[] bysall = Encoding.UTF8.GetBytes(sb.ToString());
                    stream.Seek(0, SeekOrigin.Begin);
                    stream.Write(bysall, 0, bysall.Length);
                    stream.Flush();
                }
            }
        }
Пример #15
0
        public void ExportWithHeader(object parameter, Header header)
        {
            RadGridView grid = parameter as RadGridView;

            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                string       extension = "";
                ExportFormat format    = ExportFormat.Html;

                switch (SelectedExportFormat)
                {
                case "Excel": extension = "xls";
                    format = ExportFormat.Html;
                    break;

                case "ExcelML": extension = "xml";
                    format = ExportFormat.ExcelML;
                    break;

                case "Word": extension = "doc";
                    format             = ExportFormat.Html;
                    break;

                case "Csv": extension = "csv";
                    format            = ExportFormat.Csv;
                    break;
                }

                SaveFileDialog dialog = new SaveFileDialog();
                dialog.DefaultExt  = extension;
                dialog.Filter      = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, SelectedExportFormat);
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (Stream stream = dialog.OpenFile())
                    {
                        GridViewExportOptions exportOptions = new GridViewExportOptions();
                        exportOptions.Format            = format;
                        exportOptions.ShowColumnFooters = false;
                        exportOptions.ShowColumnHeaders = true;
                        exportOptions.ShowGroupFooters  = true;
                        exportOptions.Encoding          = Encoding.UTF8;

                        grid.Export(stream, exportOptions);

                        byte[] bs = new byte[stream.Length];
                        stream.Seek(0, SeekOrigin.Begin);
                        stream.Read(bs, 0, bs.Length);
                        string str  = Encoding.UTF8.GetString(bs, 0, bs.Length);
                        string str1 = str.Insert(str.IndexOf('>', 0) + 1, createHeaderStr(header));
                        byte[] bys  = Encoding.UTF8.GetBytes(str1);
                        stream.Seek(0, SeekOrigin.Begin);
                        stream.Write(bys, 0, bys.Length);
                        stream.Flush();
                    }
                }
            }
        }
        public void Export(object parameter)
        {
            RadGridView grid = parameter as RadGridView;
            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                grid.ElementExported -= this.ElementExported;
                grid.ElementExported += this.ElementExported;

                string extension = "xls";
                ExportFormat format = ExportFormat.Html;

                SaveFileDialog dialog = new SaveFileDialog();
                dialog.DefaultExt = extension;
                dialog.Filter = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, "Excel");
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (Stream stream = dialog.OpenFile())
                    {
                        GridViewExportOptions options = new GridViewExportOptions();
                        options.Format = format;
                        options.ShowColumnHeaders = true;
                        options.Encoding = System.Text.Encoding.UTF8;
                        grid.Export(stream, options);
                    }
                }
            }
        }
        public void Export(object parameter)
        {
            var grid = parameter as RadGridView;
            if (grid != null)
            {
                grid.ElementExporting -= this.ElementExporting;
                grid.ElementExporting += this.ElementExporting;

                string extension = "";
                var format = ExportFormat.Html;

                switch (SelectedExportFormat)
                {
                    case "Excel": extension = "xls";
                        format = ExportFormat.Html;
                        break;
                    case "ExcelML": extension = "xml";
                        format = ExportFormat.ExcelML;
                        break;
                    case "Word": extension = "doc";
                        format = ExportFormat.Html;
                        break;
                    case "Csv": extension = "csv";
                        format = ExportFormat.Csv;
                        break;
                }

                var dialog = new SaveFileDialog();
                dialog.DefaultExt = extension;
                dialog.Filter = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, SelectedExportFormat);
                dialog.FilterIndex = 1;

                if (dialog.ShowDialog() == true)
                {
                    using (var stream = dialog.OpenFile())
                    {
                        var exportOptions = new GridViewExportOptions();
                        exportOptions.Format = format;
                        exportOptions.ShowColumnFooters = true;
                        exportOptions.ShowColumnHeaders = true;
                        exportOptions.ShowGroupFooters = true;
                        exportOptions.Encoding = Encoding.Unicode;

                        grid.Export(stream, exportOptions);
                    }
                }
            }
        }
Пример #18
0
        public static Workbook CreateWorkBook(RadGridView grid)
        {
            Workbook book = null;

            using (var stream = new MemoryStream())
            {
                int index = 0;
                foreach (GroupDescriptor group in grid.GroupDescriptors)
                {
                    grid.Columns.Insert(index++, new GridViewDataColumn() { DataMemberBinding = new System.Windows.Data.Binding(group.Member) });
                }

                grid.ElementExporting += elementExporting;

                var exportOptions = new GridViewExportOptions()
                {
                    Format = ExportFormat.Csv,
                    ShowColumnFooters = grid.ShowColumnFooters,
                    ShowColumnHeaders = grid.ShowColumnHeaders,
                    ShowGroupFooters = grid.ShowGroupFooters,
                    Culture = new CultureInfo("fr-FR"),
                    Items = grid.Items
                };
                grid.Export(stream, exportOptions);

                grid.ElementExporting -= elementExporting;

                stream.Position = 0;

                var csvProvider = new CsvFormatProvider();
                book = csvProvider.Import(stream);

                // /!\ telerik date format workaround
                var pattern = System.Threading.Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern;
                var dateCellFormat = new CellValueFormat(pattern);

                var dateColsIdx = grid.Columns.Cast<GridViewColumn>().OfType<GridViewDataColumn>().Where(col => col.DataType == typeof(DateTime)).Select(col => col.DisplayIndex).ToList();

                if (dateColsIdx.Any())
                {
                    var skipFirstRow = true;
                    var rowCount = grid.Items.Count;
                    for (int i = skipFirstRow ? 1 : 0; i < rowCount; i++)
                    {
                        foreach (var colIdx in dateColsIdx)
                        {
                            book.Worksheets[0].Cells[i, colIdx].SetFormat(dateCellFormat);
                        }
                    }
                }

                foreach (GroupDescriptor group in grid.GroupDescriptors)
                {
                    grid.Columns.RemoveAt(0);
                }
            }

            return book;
        }