PDF 下载:

视图：

//制造数据
<table class="table table-bordered">
    <tr>
        <th>PDF导出 @Html.ActionLink("导出", "PDFPost", new { to = "pdf" })</th>
    </tr>
    @using System.Data
    @{
        var data = new DataTable();
        data.Columns.Add("Id", typeof(int));
        data.Columns.Add("Name", typeof(string));
        data.Columns.Add("Age", typeof(int));
        DataRow dr;
        for (int i = 0; i < 20; i++)
        {
            dr = data.NewRow();
            dr[0] = i;
            dr[1] = Guid.NewGuid().ToString().Substring(0, 6);
            dr[2] = i.ToString().Substring(0, 1) + i.ToString().Substring(0, 1);
            data.Rows.Add(dr);
        }
    }
    <tr>
        <td>@data.Columns[0]</td>
        <td>@data.Columns[1]</td>
        <td>@data.Columns[2]</td>
    </tr>
    @for (int i = 0; i < data.Rows.Count; i++)
    {
        <tr>
            <td>@data.Rows[i][0].ToString()</td>
            <td>@data.Rows[i][1].ToString()</td>
            <td>@data.Rows[i][2].ToString()</td>
        </tr>
    }
</table>




//控制器   需要下载包源 iTextSharp

public FileResult PDFPost()
        {
            //准备PDF
            var pdfDoc = new Document(PageSize.LETTER, 40f, 40f, 60f, 60f);
            var path = Server.MapPath("~/App_Data/PDF/New.pdf");
            PdfWriter.GetInstance(pdfDoc, new FileStream(path, FileMode.OpenOrCreate));
            pdfDoc.Open();

            //添加Logo
            var logoPath = Server.MapPath("~/App_Data/File/38.jpg");
            using (FileStream fs = new FileStream(logoPath, FileMode.Open))
            {
                var png = iTextSharp.text.Image.GetInstance(System.Drawing.Image.FromStream(fs), ImageFormat.Png);
                png.ScalePercent(5.0f);
                png.SetAbsolutePosition(pdfDoc.Left, pdfDoc.Top);
                pdfDoc.Add(png);
            }
            //添加一个空行
            var spacer = new Paragraph("");
            spacer.SpacingBefore = 10f;
            spacer.SpacingAfter = 10f;
            pdfDoc.Add(spacer);

            //设置显示内容Table
            var table = new PdfPTable(new[] { 0.75f, 1f, 1.5f })
            {
                //设置表格显示样式
                HorizontalAlignment = 0,
                WidthPercentage = 100,
                DefaultCell = { MinimumHeight = 20 }
            };
            //添加合并表头
            string ARIALUNI_TFF = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "simhei.ttf");
            BaseFont df = BaseFont.CreateFont(ARIALUNI_TFF, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            Font f = new Font(df, 12, Font.NORMAL);

            var mergeHeader = new PdfPCell(new Phrase("PDF文档格式标题", f))
            {
                Colspan = 3,
                HorizontalAlignment = 1,
                MinimumHeight = 30f
            };
            table.AddCell(mergeHeader);

            //模拟数据
            var data = new DataTable();
            data.Columns.Add("Id", typeof(int));
            data.Columns.Add("Name", typeof(string));
            data.Columns.Add("Age", typeof(int));
            DataRow dr;
            for (int i = 0; i < 20; i++)
            {
                dr = data.NewRow();
                dr[0] = i;
                dr[1] = Guid.NewGuid().ToString().Substring(0, 6);
                dr[2] = i.ToString().Substring(0, 1) + i.ToString().Substring(0, 1);
                data.Rows.Add(dr);
            }
            //数据源内容添加到PDF表格中
            data.Columns.OfType<DataColumn>().ToList().ForEach(a => table.AddCell(a.ColumnName));
            data.Rows.OfType<DataRow>().ToList().ForEach(r =>
            {
                r.ItemArray.ToList().ForEach(item => table.AddCell(item.ToString()));
            });

            //显示内容的表格添加
            pdfDoc.Add(table);

            //关闭
            pdfDoc.Close();

            //下载
            return File(path, "application/force-download", Path.GetFileName(path));
        }