WPF RichTextBox Flowdocment如何实现自动分页？(二)

使用OpenXML SDK实现按页读取内容：

以下内容采用WPF+RichTextBox+FlowDocment展示，测试文档共3页内容，图中展示的是获取第一页内容，效果图后附上代码；效果图如下：

 1 /// <summary>
 2         /// 按页加载Word
 3         /// </summary>
 4         /// <param name="flowDoc"></param>
 5         /// <param name="filename"></param>
 6         /// <param name="page"></param>
 7         public static void loadWordML(this FlowDocument flowDoc, string filename,int page)
 8         {
 9             XElement wordDoc = null;
10             try
11             {
12                 Package package = Package.Open(filename);
13                 Uri documentUri = new Uri("/word/document.xml", UriKind.Relative);
14                 PackagePart documentPart = package.GetPart(documentUri);
15                 wordDoc = XElement.Load(new StreamReader(documentPart.GetStream()));
16             }
17             catch (Exception)
18             {
19                 flowDoc.Blocks.Add(new System.Windows.Documents.Paragraph(new System.Windows.Documents.Run("File not found or not in correct format (Word 2007)")));
20                 return;
21             }
22 
23             XNamespace w = "http://schemas.openxmlformats.org/wordprocessingml/2006/main";
24 
25             var paragraphs = from p in wordDoc.Descendants(w + "p")
26                              select p;
27             int pagecount=0;
28             foreach (var p in paragraphs)
29             {
30                 var PageTag = from s in p.Descendants(w + "lastRenderedPageBreak") select s;
31                 if (PageTag.Count()>0)
32                 { 
33                     pagecount++;
34                     if (pagecount == page)
35                     {
36                         break;
37                     }
38                 }
39                 var style = from s in p.Descendants(w + "pPr")
40                             select s;
41 
42                 var font = (from f in style.Descendants(w + "rFonts")
43                             select f.FirstAttribute).FirstOrDefault();
44                 var size = (from s in style.Descendants(w + "sz")
45                             select s.FirstAttribute).FirstOrDefault();
46 
47                 System.Windows.Documents.Paragraph par = new System.Windows.Documents.Paragraph();
48                 System.Windows.Documents.Run r = new System.Windows.Documents.Run(p.Value);
49                 if (font != null)
50                 {
51                     FontFamilyConverter converter = new FontFamilyConverter();
52                     r.FontFamily = (System.Windows.Media.FontFamily)converter.ConvertFrom(font.Value);
53                 }
54                 if (size != null)
55                 {
56                     r.FontSize = double.Parse(size.Value);
57                 }
58                 par.Inlines.Add(r);
59 
60                 flowDoc.Blocks.Add(par);
61             }
62         }

 

/// <summary>
        /// 按页加载Word
        /// </summary>
        /// <param name="flowDoc"></param>
        /// <param name="filename">文件路径及名称</param>
        /// <param name="TopPage">单独获取第几页</param>
        public static void loadWordMLOnePage(this FlowDocument flowDoc, string filename, int Page)
        {
            XElement wordDoc = null;
            try
            {
                Package package = Package.Open(filename);
                Uri documentUri = new Uri("/word/document.xml", UriKind.Relative);
                PackagePart documentPart = package.GetPart(documentUri);
                wordDoc = XElement.Load(new StreamReader(documentPart.GetStream()));
            }
            catch (Exception)
            {
                flowDoc.Blocks.Add(new System.Windows.Documents.Paragraph(new System.Windows.Documents.Run("File not found or not in correct format (Word 2007)")));
                return;
            }

            
            XNamespace w = "http://schemas.openxmlformats.org/wordprocessingml/2006/main";

            var paragraphs = from p in wordDoc.Descendants(w + "p")
                             select p;
            int pagecount = 0;
            

            foreach (var p in paragraphs)
            {
                var PageTag = from s in p.Descendants(w + "lastRenderedPageBreak") select s;
                if (PageTag.Count() > 0)
                {
                    pagecount++;
                }

                var style = from s in p.Descendants(w + "pPr")
                            select s;

                var font = (from f in style.Descendants(w + "rFonts")
                            select f.FirstAttribute).FirstOrDefault();
                var size = (from s in style.Descendants(w + "sz")
                            select s.FirstAttribute).FirstOrDefault();

                System.Windows.Documents.Paragraph par = new System.Windows.Documents.Paragraph();
                System.Windows.Documents.Run r = new System.Windows.Documents.Run(p.Value);
                if (font != null)
                {
                    FontFamilyConverter converter = new FontFamilyConverter();
                    r.FontFamily = (System.Windows.Media.FontFamily)converter.ConvertFrom(font.Value);
                }
                if (size != null)
                {
                    r.FontSize = double.Parse(size.Value);
                }
                par.Inlines.Add(r);

                if (pagecount == Page-1)
                {
                    flowDoc.Blocks.Add(par);
                }
                
            }
        }
核心代码（获取第几页的数据）

第一个方法是用来获取N页之前的所有内容，第二个方法用来获取第N页的内容

posted @ 2015-11-24 12:28  A1A  阅读(850)  评论(4)  编辑  收藏  举报