C#/VB.NET 創建PDF項目符號列表和多級編號列表

使用項目符號和編號，可以讓文檔的層次結構更清晰、更有條理，也更容易突出重點。在編輯文檔的過程中，我個人也比較偏愛項目標號來標註文章重點信息。在之前的文章中，介紹了如何在Word中來創建項目標號和編號列表，在本篇文章中，將介紹創建PDF項目符號列表和多級編號列表的方法。
藉助工具：Free Spire.PDF for .NET
PS：dll可以直接在安裝路徑下的Bin文件夾中獲取。

1.創建PDF符號列表

Csharp

using System;
using System.Drawing;
using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Lists;

namespace CreateList_PDF
{
    class Program
    {
        static void Main(string[] args)
        {
            //創建一個PDF文檔
            PdfDocument doc = new PdfDocument();
            //添加一頁A4大小的頁面
            PdfPageBase page = doc.Pages.Add(PdfPageSize.A4);
            float y = 10;

            //創建標題並設置格式，包括字體、字號、顏色
            PdfBrush brush1 = PdfBrushes.Black;
            PdfTrueTypeFont font1 = new PdfTrueTypeFont(new Font("楷體", 18f, FontStyle.Regular), true);
            PdfStringFormat format1 = new PdfStringFormat(PdfTextAlignment.Center);
            page.Canvas.DrawString("Categories List（項目列表）", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1);
            y = y + font1.MeasureString("Categories List（項目列表）", format1).Height;
            y = y + 5;

            //創建列表文字並設置格式
            RectangleF rctg = new RectangleF(new PointF(0, 0), page.Canvas.ClientSize);
            PdfLinearGradientBrush brush
                = new PdfLinearGradientBrush(rctg, Color.SteelBlue, Color.Blue, PdfLinearGradientMode.Vertical);
            PdfTrueTypeFont font2 = new PdfTrueTypeFont(new Font("宋體", 15f, FontStyle.Regular), true);
            String formatted
                = "Part 1 Listening（聽力部分） \n Part 2 Speaking（口語部分） \n Part 3 Reading（閱讀部分） \n Part 4 Writing（寫作部分）"
                + "\n Part 5 Test（測試） 1 \n Part 6 Test（測試） 2 \n Part 7 Test Answers（測試答案）";

            //創建PdfList 類對象，並設置列表及樣式
            PdfList list = new PdfList(formatted);
            list.Font = font2;
            list.Indent = 8;
            list.TextIndent = 5;
            list.Brush = brush;
            PdfLayoutResult result = list.Draw(page, 0, y);
            y = result.Bounds.Bottom;

            //保存並打開文檔
            doc.SaveToFile("List.pdf");
            System.Diagnostics.Process.Start("List.pdf");
        }
    }
}

測試結果：

VB.NET

Imports System
Imports System.Drawing
Imports Spire.Pdf
Imports Spire.Pdf.Graphics
Imports Spire.Pdf.Lists

Namespace CreateList_PDF

    Class Program

        Private Shared Sub Main(ByVal args As String())
            Dim doc As PdfDocument = New PdfDocument()
            Dim page As PdfPageBase = doc.Pages.Add(PdfPageSize.A4)
            Dim y As Single = 10
            Dim brush1 As PdfBrush = PdfBrushes.Black
            Dim font1 As PdfTrueTypeFont = New PdfTrueTypeFont(New Font("楷體", 18F, FontStyle.Regular), True)
            Dim format1 As PdfStringFormat = New PdfStringFormat(PdfTextAlignment.Center)
            page.Canvas.DrawString("Categories List（項目列表）", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1)
            y = y + font1.MeasureString("Categories List（項目列表）", format1).Height
            y = y + 5
            Dim rctg As RectangleF = New RectangleF(New PointF(0, 0), page.Canvas.ClientSize)
            Dim brush As PdfLinearGradientBrush = New PdfLinearGradientBrush(rctg, Color.SteelBlue, Color.Blue, PdfLinearGradientMode.Vertical)
            Dim font2 As PdfTrueTypeFont = New PdfTrueTypeFont(New Font("宋體", 15F, FontStyle.Regular), True)
            Dim formatted As String = "Part 1 Listening（聽力部分） " & vbLf & " Part 2 Speaking（口語部分） " & vbLf & " Part 3 Reading（閱讀部分） " & vbLf & " Part 4 Writing（寫作部分）" & vbLf & " Part 5 Test（測試） 1 " & vbLf & " Part 6 Test（測試） 2 " & vbLf & " Part 7 Test Answers（測試答案）"
            Dim list As PdfList = New PdfList(formatted)
            list.Font = font2
            list.Indent = 8
            list.TextIndent = 5
            list.Brush = brush
            Dim result As PdfLayoutResult = list.Draw(page, 0, y)
            y = result.Bounds.Bottom
            doc.SaveToFile("List.pdf")
            System.Diagnostics.Process.Start("List.pdf")
        End Sub
    End Class
End Namespace

2.創建PDF多級編號列表

Spire.Pdf.dll支持多種類型的編號類型

Csharp

using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Lists;
using System;
using System.Drawing;

namespace List2
{
    class Program
    {
        static void Main(string[] args)
        {
            //新建PDF文檔，並添加一頁A4大小的空白頁面
            PdfDocument doc = new PdfDocument();
            PdfPageBase page = doc.Pages.Add(PdfPageSize.A4);

            float y = 10;

            //添加標題並設置文本和格式
            PdfBrush brush1 = PdfBrushes.Black;
            PdfTrueTypeFont font1 = new PdfTrueTypeFont(new Font("宋體", 18f, FontStyle.Regular), true);
            PdfStringFormat format1 = new PdfStringFormat(PdfTextAlignment.Center);
            page.Canvas.DrawString("目錄一覽", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1);
            y = y + font1.MeasureString("目錄一覽", format1).Height;
            y = y + 5;

            //添加文本並設置字體
            RectangleF rctg = new RectangleF(new PointF(0, 0), page.Canvas.ClientSize);
            PdfLinearGradientBrush brush
            = new PdfLinearGradientBrush(rctg, Color.DarkBlue, Color.Brown, PdfLinearGradientMode.Vertical);
            PdfTrueTypeFont font2 = new PdfTrueTypeFont(new Font("宋體", 15f, FontStyle.Regular), true);
            String formatted1 = "第一章 總 論";
            String formatted2 = "第一節 經濟法概述 ";
            String formatted3 = "第二節 經濟法主體 ";
            String formatted4 = "第二章 公司法律制度";

            //設置編號列表樣式
            PdfOrderedMarker marker1 = new PdfOrderedMarker(PdfNumberStyle.Numeric, new PdfFont(PdfFontFamily.Helvetica, 15f));
            PdfOrderedMarker marker2 = new PdfOrderedMarker(PdfNumberStyle.LowerRoman, new PdfFont(PdfFontFamily.Helvetica, 12f));

            //爲第一級編號列表設置格式
            PdfSortedList list1 = new PdfSortedList(font2);
            list1.Indent = 0;
            list1.TextIndent = 5;
            list1.Brush = brush;
            list1.Marker = marker1;

            //爲第二級編號列表設置格式
            PdfSortedList list2 = new PdfSortedList(font2);
            list2.Marker = marker2;
            list2.Brush = brush;
            list2.TextIndent = 10;

            //應用編號列表格式到指定文本
            PdfListItem item = list1.Items.Add(formatted1);
            item.SubList = list2;
            list2.Items.Add(formatted2);
            list2.Items.Add(formatted3);
            list1.Items.Add(formatted4);            

            //設置PDF文檔佈局和位置
            PdfTextLayout textLayout = new PdfTextLayout();
            textLayout.Break = PdfLayoutBreakType.FitPage;
            textLayout.Layout = PdfLayoutType.Paginate;
            list1.Draw(page, new PointF(0, y), textLayout);

            //保存文件
            doc.SaveToFile("多級列表.pdf");
            System.Diagnostics.Process.Start("多級列表.pdf");
        }
    }
}

測試結果：

VB.NET

Imports Spire.Pdf
Imports Spire.Pdf.Graphics
Imports Spire.Pdf.Lists
Imports System
Imports System.Drawing

Namespace List2

    Class Program

        Private Shared Sub Main(ByVal args As String())
            Dim doc As PdfDocument = New PdfDocument()
            Dim page As PdfPageBase = doc.Pages.Add(PdfPageSize.A4)
            Dim y As Single = 10
            Dim brush1 As PdfBrush = PdfBrushes.Black
            Dim font1 As PdfTrueTypeFont = New PdfTrueTypeFont(New Font("宋體", 18F, FontStyle.Regular), True)
            Dim format1 As PdfStringFormat = New PdfStringFormat(PdfTextAlignment.Center)
            page.Canvas.DrawString("目錄一覽", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1)
            y = y + font1.MeasureString("目錄一覽", format1).Height
            y = y + 5
            Dim rctg As RectangleF = New RectangleF(New PointF(0, 0), page.Canvas.ClientSize)
            Dim brush As PdfLinearGradientBrush = New PdfLinearGradientBrush(rctg, Color.DarkBlue, Color.Brown, PdfLinearGradientMode.Vertical)
            Dim font2 As PdfTrueTypeFont = New PdfTrueTypeFont(New Font("宋體", 15F, FontStyle.Regular), True)
            Dim formatted1 As String = "第一章 總 論"
            Dim formatted2 As String = "第一節 經濟法概述 "
            Dim formatted3 As String = "第二節 經濟法主體 "
            Dim formatted4 As String = "第二章 公司法律制度"
            Dim marker1 As PdfOrderedMarker = New PdfOrderedMarker(PdfNumberStyle.Numeric, NewPdfFont(PdfFontFamily.Helvetica, 15F))
            Dim marker2 As PdfOrderedMarker = New PdfOrderedMarker(PdfNumberStyle.LowerRoman, NewPdfFont(PdfFontFamily.Helvetica, 12F))
            Dim list1 As PdfSortedList = New PdfSortedList(font2)
            list1.Indent = 0
            list1.TextIndent = 5
            list1.Brush = brush
            list1.Marker = marker1
            Dim list2 As PdfSortedList = New PdfSortedList(font2)
            list2.Marker = marker2
            list2.Brush = brush
            list2.TextIndent = 10
            Dim item As PdfListItem = list1.Items.Add(formatted1)
            item.SubList = list2
            list2.Items.Add(formatted2)
            list2.Items.Add(formatted3)
            list1.Items.Add(formatted4)
            Dim textLayout As PdfTextLayout = New PdfTextLayout()
            textLayout.Break = PdfLayoutBreakType.FitPage
            textLayout.Layout = PdfLayoutType.Paginate
            list1.Draw(page, New PointF(0, y), textLayout)
            doc.SaveToFile("多級列表.pdf")
            System.Diagnostics.Process.Start("多級列表.pdf")
        End Sub
    End Class
End Namespace

以上內容爲本次關於“創建PDF項目標號列表和多級編號列表”的全部內容。如需轉載，請註明出處。感謝閱讀！