1. C# / Говнокод #2803

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    using System;
using System.Data;
using System.Configuration;
using System.IO;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.POIFS.FileSystem;

public class GridViewExportUtil
{
    static HSSFWorkbook hssfworkbook;

    static MemoryStream WriteToStream()
    {
        //Write the stream data of workbook to the root directory
        MemoryStream file = new MemoryStream();
        hssfworkbook.Write(file);
        return file;
    }

    static void InitializeWorkbook()
    {
        hssfworkbook = new HSSFWorkbook();

        ////create a entry of DocumentSummaryInformation
        DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
        dsi.Company = "";
        hssfworkbook.DocumentSummaryInformation = dsi;

        ////create a entry of SummaryInformation
        SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
        si.Subject = "";
        hssfworkbook.SummaryInformation = si;
    }
    /// <param name="fileName"></param>
    /// <param name="gv"></param>
    public static void Export(string fileName, GridView gv)
    {
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        HttpContext.Current.Response.Charset = System.Text.Encoding.Unicode.EncodingName;
        HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode;
        HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
        HttpContext.Current.Response.ContentType = "application/vnd.ms-excel"; // NPOI
        HttpContext.Current.Response.AddHeader(
             "content-disposition", string.Format(
                "attachment; filename=Report.xls"));//, fileName)); // Need .XLS file
        HttpContext.Current.Response.Clear();

        InitializeWorkbook();

        HSSFSheet sheet1 = hssfworkbook.CreateSheet("Таблица");
        //sheet1.CreateRow(0).CreateCell(0).SetCellValue("Таблица");

        using (StringWriter sw = new StringWriter())
        {
                //  Create a form to contain the grid
                Table table = new Table();
                //  add the header row to the table
                if (gv.HeaderRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
                    table.Rows.Add(gv.HeaderRow);
                }
                //  add each of the data rows to the table
                foreach (GridViewRow row in gv.Rows)
                {
                    GridViewExportUtil.PrepareControlForExport(row);
                    table.Rows.Add(row);
                }
                //  add the footer row to the table
                if (gv.FooterRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.FooterRow);
                    table.Rows.Add(gv.FooterRow);
                }

                sheet1.DisplayGridlines = true;

                HSSFCellStyle style1 = hssfworkbook.CreateCellStyle();
                style1.Alignment = HSSFCellStyle.ALIGN_CENTER;

                sheet1.SetColumnWidth(0, 10000);
                sheet1.SetColumnWidth(1, 5000);
                sheet1.VerticallyCenter = true;

                for (int j = 2; j < table.Rows[0].Cells.Count; j++)
                {
                    sheet1.SetColumnWidth(j, 4000);
                    sheet1.SetDefaultColumnStyle(short.Parse(j.ToString()), style1);
                }

                double Temp=0;

    Запостил: Nemerle, 16 Марта 2010

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