Winform利用分页控件实现导出PDF文档功能

private void btnExportPdf_Click(object sender, EventArgs e)
        {
            //带参数处理
            bool isLandscape = true;//是否为横向打印，默认为true
            bool includeHeader = true;//是否每页包含表头信息
            int headerAlignment = Element.ALIGN_CENTER;//头部的对其方式，默认为居中对齐
            float headerFontSize = 9f;//头部字体大小
            float rowFontSize = 9f;//行记录字体大小
            float? headerFixHeight = null;//头部的固定高度，否则为自适应
            <strong>TextSharpHelper</strong><strong>.ExportPdf</strong>(isLandscape, includeHeader, headerAlignment, headerFontSize, rowFontSize, headerFixHeight);
        }

/// <summary>
    /// 基于iTextSharp.text.pdf对PDF的导出处理
    /// </summary>
    public static class TextSharpHelper
    {
        /// <summary>
        /// datatable转PDF方法
        /// </summary>
        /// <param name="data">dataTable数据</param>
        /// <param name="pdfFile">PDF文件保存的路径</param>
        /// <param name="isLandscape">是否为横向打印，默认为true</param>
        /// <param name="includeHeader">是否每页包含表头信息</param>
        /// <param name="headerAlignment">头部的对其方式，默认为居中对齐</param>
        /// <param name="headerFontSize">头部字体大小</param>
        /// <param name="rowFontSize">行记录字体大小</param>
        /// <param name="headerFixHeight">头部的固定高度，否则为自适应</param>
        /// <returns></returns>
        public static bool ExportTableToPdf(DataTable data, string pdfFile, bool isLandscape = true, bool includeHeader = true, int headerAlignment = Element.ALIGN_CENTER, float headerFontSize = 9f, float rowFontSize = 9f, float? headerFixHeight = null)
        {
            //默认页面大小
            var document = new Document();
            var retangle = new iTextSharp.text.Rectangle(0, 0, isLandscape ? PageSize.A4.Height : PageSize.A4.Width, isLandscape ? PageSize.A4.Width : PageSize.A4.Height);
            document.SetPageSize(retangle);
            var writer = PdfWriter.GetInstance(document, new FileStream(pdfFile, FileMode.Create));
            document.Open();

            //设置字体
            var bfChinese = BaseFont.CreateFont("C:\\windows\\Fonts\\simsun.ttc,1", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            var fontHeader = new iTextSharp.text.Font(bfChinese, headerFontSize, iTextSharp.text.Font.BOLD, new BaseColor(0, 0, 0));
            var fontRow = new iTextSharp.text.Font(bfChinese, rowFontSize, iTextSharp.text.Font.NORMAL, new BaseColor(0, 0, 0));

            var table = new PdfPTable(data.Columns.Count);
            table.WidthPercentage = 100f; // percentage
            table.DefaultCell.Padding = 1;
            table.DefaultCell.BorderWidth = 1;
            table.DefaultCell.BorderWidth = 0.1f;
            table.DefaultCell.HorizontalAlignment = Element.ALIGN_LEFT;
            table.HeaderRows = includeHeader ? 1 : 0;

            //将datatable表头转换成PDFTable的表头
            var EventRowBackColor = Color.LightCyan;
            foreach (DataColumn dc in data.Columns)
            {
                var caption = !string.IsNullOrEmpty(dc.Caption) ? dc.Caption : dc.ColumnName;

                var cell = new PdfPCell();
                if (headerFixHeight.HasValue)
                {
                    cell.FixedHeight = headerFixHeight.Value;
                }
                cell.HorizontalAlignment = headerAlignment;
                cell.VerticalAlignment = Element.ALIGN_MIDDLE;
                cell.Phrase = new Phrase(caption, fontHeader);
                table.AddCell(cell);
            }

            //插入数据
            for (int i = 0; i < data.Rows.Count; i++)
            {
                var backgroudColor = new BaseColor((i % 2 == 0) ? Color.White : EventRowBackColor);
                for (int j = 0; j < data.Columns.Count; j++)
                {
                    var cell = new PdfPCell();
                    var text = data.Rows[i][j].ToString();
                    cell.BackgroundColor = backgroudColor;
                    cell.Phrase = new Phrase(text, fontRow);
                    table.AddCell(cell);
                }
            }
            document.Add(table);
            document.Close();
            writer.Close();
            return true;
        }
    }

public delegate void <strong>ExportPdfEventHandler</strong>(object sender, EventArgs e);
    /// <summary>
    /// 分页工具条用户控件，仅提供分页信息显示及改变页码操作
    /// </summary>
    public class Pager : DevExpress.XtraEditors.XtraUserControl
    {
        /// <summary>
        /// 导出PDF的事件
        /// </summary>
        public event <strong>ExportPdfEventHandler</strong> ExportPdf;

private void btnExportPdf_Click(object sender, EventArgs e)
        {
            if (ExportPdf != null)
            {
                ExportPdf(sender, e);
            }
        }

private void WinGridViewPager_Load(object sender, EventArgs e)
        {
            if (!this.DesignMode)
            {
                this.pager.PageChanged += new PageChangedEventHandler(pager_PageChanged);
                this.pager.ExportCurrent += new ExportCurrentEventHandler(pager_ExportCurrent);
                this.pager.ExportAll += new ExportAllEventHandler(pager_ExportAll);
                <strong>this.pager.ExportPdf += Pager_ExportPdf;</strong>

DataTable sourcetable = null;
            if (this.DataSource is DataView)
            {
                DataView dv = (DataView)AllToExport;//默认导出显示内容
                sourcetable = dv.ToTable();
            }
            else if (this.DataSource is DataTable)
            {
                sourcetable = this.DataSource as DataTable;
            }
            else
            {
                sourcetable = ReflectionUtil.CreateTable(this.DataSource);
            }

var table = new DataTable();
    for (int i = 0; i < this.gridView1.Columns.Count; i++)
    {
        if (this.gridView1.Columns[i].Visible)
        {
            var column = new DataColumn(this.gridView1.Columns[i].FieldName, typeof(string));
            column.Caption = this.gridView1.Columns[i].Caption;
            table.Columns.Add(column);
        }
    }

for (int i = 0; i < sourcetable.Rows.Count; i++)
    {
        var row = table.NewRow();
        for (int j = 0; j < table.Columns.Count; j++)
        {
            var columnName = table.Columns[j].ColumnName;
            var displayText = this.gridView1.GetRowCellDisplayText(i, columnName);
            row[columnName] = displayText ?? "";
        }
        table.Rows.Add(row);
    }

var success =<strong> TextSharpHelper.ExportTableToPdf</strong>(table, pdfFile, isLandscape, includeHeader, headerAlignment, headerFontSize, rowFontSize, headerFixHeight);
    if (success)
    {
        Process.Start(pdfFile);
    }