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  • 导出压缩

    public void Daochu()
    {
    DataTable table = bll.GetToILLModelList();
    //创建一个工作蒲
    HSSFWorkbook work = new HSSFWorkbook();
    //创建一个Sheet
    HSSFSheet sheet = work.CreateSheet();
    //添加第一行数据
    HSSFRow row = sheet.CreateRow(0);
    //去循环添加第一行的列属性
    for (int i = 0; i < table.Columns.Count; i++)
    {
    //设置列的标题
    HSSFCell cell = row.CreateCell(table.Columns[i].Ordinal);
    cell.SetCellValue(table.Columns[i].ColumnName);
    }
    //循环遍历去添加行数据
    for (int i = 0; i < table.Rows.Count; i++)
    {
    //实例化一行
    HSSFRow rows = sheet.CreateRow(i + 1);
    for (int j = 0; j < table.Columns.Count; j++)
    {
    //实例化一列
    HSSFCell cell = rows.CreateCell(table.Columns[j].Ordinal);
    //指定第几行第几列去添加数据
    cell.SetCellValue(table.Rows[i][table.Columns[j].Ordinal].ToString());
    }
    }
    this.saveFileDialog1.Filter = "全部格式|*.xls";
    DialogResult result = this.saveFileDialog1.ShowDialog();
    if (result == DialogResult.OK)
    {
    using (FileStream fs = new FileStream(this.saveFileDialog1.FileName, FileMode.Create, FileAccess.ReadWrite))
    {
    //先去写文件
    work.Write(fs);
    //设置一个字节大小为4096
    int size = 4096;
    byte[] data = new byte[4 * 1024];
    while (true)
    {
    if (size > 0)
    {
    size = fs.Read(data, 0, data.Length);
    fs.Write(data, 0, size);
    }
    else
    {
    break;
    }
    }
    }
    }
    //压缩文件
    using (ZipFile zip = ZipFile.Create(this.saveFileDialog1.FileName.Split('.')[0].ToString() + ".rar"))
    {
    zip.BeginUpdate();
    zip.Add(this.saveFileDialog1.FileName, new FileInfo(this.saveFileDialog1.FileName).Name);
    zip.CommitUpdate();
    };
    }

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  • 原文地址:https://www.cnblogs.com/GaoHao518/p/13065206.html
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