在创建表格时,如果表格内容出现跨页显示的时候,默认情况下该表格的表头不会在下一页显示,在阅读体验上不是很好。下面分享一个方法如何在表格跨页时显示表格的表头内容,在C#中只需要简单使用方法grid.RepeatHeader = true;即可。具体参考如下方法步骤。另附VB.NET代码,有需可供参考。
1.在VS程序中添加引用Spire.PDF.dll
方法1:通过Nuget搜索下载安装。
在“解决方案资源管理器”中,鼠标右键点击“添加引用”—“ 管理NuGet包”
完成安装。引用结果:
方法2:下载Free Spire.PDF for .NET包到本地。解压。在VS中的“解决方案资源管理器”中,鼠标右键点击“添加引用”-将解压包Bin文件夹下的dll添加引用至vs。
C#
using Spire.Pdf; using Spire.Pdf.Graphics; using Spire.Pdf.Grid; using System.Drawing; namespace RepeatTableHeaderRow { class Program { static void Main(string[] args) { //新建一个PDF文档 PdfDocument pdf = new PdfDocument(); //添加一页 PdfPageBase page = pdf.Pages.Add(); //创建PdfGrid类的对象 PdfGrid grid = new PdfGrid(); //设置单元格填充 grid.Style.CellPadding = new PdfPaddings(1, 1, 1, 1); //添加表格列数 grid.Columns.Add(3); //添加表头行及表格数据 PdfGridRow[] pdfGridRows = grid.Headers.Add(1); for (int i = 0; i < pdfGridRows.Length; i++) { pdfGridRows[i].Style.Font = new PdfTrueTypeFont(new Font("Arial", 11f, FontStyle.Regular), true);//指定字体 pdfGridRows[i].Cells[0].Value = "NAME"; pdfGridRows[i].Cells[1].Value = "SUBJECT"; pdfGridRows[i].Cells[2].Value = "SCORES"; pdfGridRows[i].Style.TextBrush = PdfBrushes.Red; /*pdfGridRows[i].Style.Font = new PdfCjkStandardFont(PdfCjkFontFamily.HanyangSystemsGothicMedium,12f,PdfFontStyle.Regular);//绘制中日韩字体的方法 pdfGridRows[i].Cells[0].Value = "? ?"; pdfGridRows[i].Cells[1].Value = "科 目"; pdfGridRows[i].Cells[2].Value = "ほしとり"; pdfGridRows[i].Style.TextBrush = PdfBrushes.Blue; */ } //设置重复表头(表格跨页时) grid.RepeatHeader = true; //添加数据到表格 for (int i = 0; i < 60; i++) { PdfGridRow row = grid.Rows.Add(); for (int j = 0; j < grid.Columns.Count; j++) { row.Cells[j].Value = "(Row " + i + ", column " + j + ")"; } } //在PDF页面绘制表格 grid.Draw(page, new PointF(0, 20)); //保存文档 pdf.SaveToFile("Result.pdf"); System.Diagnostics.Process.Start("Result.pdf"); } } }
执行程序后,在VS的程序项目文件夹下可查看生成的PDF文档,如
C:\Users\Administrator\Documents\Visual Studio 2017\Projects\DrawTable_PDF\RepeatTableHeaderRow\bin\Debug\Result.pdf
文件路径也可以定义为其他路径。
跨页表头效果:
VB.NET代码
Imports Spire.Pdf Imports Spire.Pdf.Graphics Imports Spire.Pdf.Grid Imports System.Drawing Namespace RepeatTableHeaderRow Class Program Private Shared Sub Main(args As String()) ‘新建一个PDF文档 Dim pdf As New PdfDocument() ‘添加一页 Dim page As PdfPageBase = pdf.Pages.Add() ‘创建PdfGrid类的对象 Dim grid As New PdfGrid() ‘设置单元格填充 grid.Style.CellPadding = New PdfPaddings(1, 1, 1, 1) ‘添加表格列数 grid.Columns.Add(3) ‘添加表头行及表格数据 Dim pdfGridRows As PdfGridRow() = grid.Headers.Add(1) For i As Integer = 0 To pdfGridRows.Length - 1 pdfGridRows(i).Style.Font = New PdfTrueTypeFont(New Font("Arial", 11F, FontStyle.Regular), True) ‘指定字体 pdfGridRows(i).Cells(0).Value = "NAME" pdfGridRows(i).Cells(1).Value = "SUBJECT" pdfGridRows(i).Cells(2).Value = "SCORES" ‘pdfGridRows[i].Style.Font = new PdfCjkStandardFont(PdfCjkFontFamily.HanyangSystemsGothicMedium,12f,PdfFontStyle.Regular);‘绘制中日韩字体的方法 ‘ pdfGridRows[i].Cells[0].Value = "? ?"; ‘ pdfGridRows[i].Cells[1].Value = "科 目"; ‘ pdfGridRows[i].Cells[2].Value = "ほしとり"; ‘ pdfGridRows[i].Style.TextBrush = PdfBrushes.Blue; pdfGridRows(i).Style.TextBrush = PdfBrushes.Red Next ‘设置重复表头(表格跨页时) grid.RepeatHeader = True ‘添加数据到表格 For i As Integer = 0 To 59 Dim row As PdfGridRow = grid.Rows.Add() For j As Integer = 0 To grid.Columns.Count - 1 row.Cells(j).Value = "(Row " + i + ", column " + j + ")" Next Next ‘在PDF页面绘制表格 grid.Draw(page, New PointF(0, 20)) ‘保存文档 pdf.SaveToFile("Result.pdf") System.Diagnostics.Process.Start("Result.pdf") End Sub End Class End Namespace
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