导出数据表与超过二十万行excel

本文关键字:十万 excel 数据表 | 更新日期: 2023-09-27 18:04:43

我试图导出一个数据表在我的应用程序excel。但是我的数据表包含了超过220万条记录,而我只能在excel中写入65536条记录。

在google上搜索了很多之后,才知道在2007年以前的版本中,只有65536条记录可以写入excel。

如果我们可以在excel中写入超过65536条记录,请告诉我

我没有在我的应用程序中使用microsoft office lib我正在使用一个类我自己写一个表excel

这是我的excel类

公共类ExcelWrite{private Stream流;private BinaryWriter;

    private ushort[] clBegin = { 0x0809, 8, 0, 0x10, 0, 0 };
    private ushort[] clEnd = { 0x0A, 00 };

    private void WriteUshortArray(ushort[] value)
    {
        for (int i = 0; i < value.Length; i++)
            writer.Write(value[i]);
    }
    /// <summary>
    /// Initializes a new instance of the <see cref="ExcelWriter"/> class.
    /// </summary>
    /// <param name="stream">The stream.</param>
    public ExcelWrite(Stream stream)
    {
        this.stream = stream;
        writer = new BinaryWriter(stream);
    }
    public ExcelWrite()
    {
    }
    /// <summary>
    /// Writes the text cell value.
    /// </summary>
    /// <param name="row">The row.</param>
    /// <param name="col">The col.</param>
    /// <param name="value">The string value.</param>
    public void WriteCell(int row, int col, string value)
    {
        ushort[] clData = { 0x0204, 0, 0, 0, 0, 0 };
        int iLen = value.Length;
        byte[] plainText = Encoding.ASCII.GetBytes(value);
        clData[1] = (ushort)(8 + iLen);
        clData[2] = (ushort)row;
        clData[3] = (ushort)col;
        clData[5] = (ushort)iLen;
        WriteUshortArray(clData);
        writer.Write(plainText);
    }
    /// <summary>
    /// Writes the integer cell value.
    /// </summary>
    /// <param name="row">The row number.</param>
    /// <param name="col">The column number.</param>
    /// <param name="value">The value.</param>
    public void WriteCell(int row, int col, int value)
    {
        ushort[] clData = { 0x027E, 10, 0, 0, 0 };
        clData[2] = (ushort)row;
        clData[3] = (ushort)col;
        WriteUshortArray(clData);
        int iValue = (value << 2) | 2;
        writer.Write(iValue);
    }
    /// <summary>
    /// Writes the double cell value.
    /// </summary>
    /// <param name="row">The row number.</param>
    /// <param name="col">The column number.</param>
    /// <param name="value">The value.</param>
    public void WriteCell(int row, int col, double value)
    {
        ushort[] clData = { 0x0203, 14, 0, 0, 0 };
        clData[2] = (ushort)row;
        clData[3] = (ushort)col;
        WriteUshortArray(clData);
        writer.Write(value);
    }
    /// <summary>
    /// Writes the empty cell.
    /// </summary>
    /// <param name="row">The row number.</param>
    /// <param name="col">The column number.</param>
    public void WriteCell(int row, int col)
    {
        ushort[] clData = { 0x0201, 6, 0, 0, 0x17 };
        clData[2] = (ushort)row;
        clData[3] = (ushort)col;
        WriteUshortArray(clData);
    }
    /// <summary>
    /// Must be called once for creating XLS file header
    /// </summary>
    public void BeginWrite()
    {
        WriteUshortArray(clBegin);
    }
    /// <summary>
    /// Ends the writing operation, but do not close the stream
    /// </summary>
    public void EndWrite()
    {
        WriteUshortArray(clEnd);
        writer.Flush();
    }
    public void exporttoExcel(DataTable table,string filename)
    {
        DataTable dt = new DataTable();
        try
        {
            StringBuilder SB = new StringBuilder();
            dt = table;
            if (dt.Rows.Count > 0)
            {
                FileStream stream = File.Open("C:/Application/" + filename + ".xls", FileMode.Create);
                ExcelWrite excelWriter = new ExcelWrite(stream);
                //AB_MISreports.Util.ExcelWrite excelWriter = new AB_MISreports.Util.ExcelWrite(stream);
                excelWriter.BeginWrite();
                for (int i = 0; i < dt.Columns.Count; i++)
                {
                    excelWriter.WriteCell(0, i, dt.Columns[i].ColumnName.ToString());
                    for (int j = 0; j < dt.Rows.Count; j++)
                    {
                        excelWriter.WriteCell(j + 1, i, dt.Rows[j][i].ToString());
                    }
                }
                excelWriter.EndWrite();
                stream.Close();
                HttpContext.Current.Response.ContentType = "application/vnd.xls";
                HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=" + filename + ".xls");
                HttpContext.Current.Response.TransmitFile("C:/Application/" + filename + ".xls");
                HttpContext.Current.Response.End();
                HttpContext.Current.Response.Flush();
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            dt.Dispose();
        }
    }
}

导出数据表与超过二十万行excel

这些是官方限制。Excel 2007支持。xls和。xlsx格式文件,您确定正在编写较新的文件格式类型吗?这对你来说可能不是一个可行的选择,但我们使用Aspose。处理电子表格创建的单元格。

Excel 2003 .xls - 65,536行
(http://office.microsoft.com/en-gb/excel-help/excel-specifications-and-limits-HP005199291.aspx)

Excel 2007 .xlsx - 1,048,576行
(http://office.microsoft.com/en-gb/excel-help/excel-specifications-and-limits-HP010073849.aspx)

Excel 2010 .xlsx - 1,058,576行
(http://office.microsoft.com/en-gb/excel-help/excel-specifications-and-limits-HP010342495.aspx)

请尝试将格式从"。xls"更改为"。xlsx"FileStream流=文件。Open("C:/Application/" + filename + ".xlsx", FileMode.Create);