在ItextSharp上处理书签和链接上的PDF文件操作

Question

与书签和链接相关的问题很少

BookMarks

1. 当我们得到书签时，是否有任何选项可以在页面内容中添加书签并修改书签文本并修改PDF文件中树形结构中的书签prsent。

2. 我们是否可以选择在页面内容中搜索书签。我考虑的是（空格，拼写等）

3. 选择编辑pdf页面内容中的书签和书签。

4. 是否有任何选项可以在页面内容中找到H1，H2

5. 是否有任何选项可以找到书签指向正确的页面。

链接

1. 是否有找到链接的选项。并检查链接是否指向正确的URL。

这是我的代码

public void ReadPdfFile(string fileName, string CompareText)
    {
        StringBuilder text = new StringBuilder();
        System.Data.DataTable dtResult = new System.Data.DataTable();
        string currentText = "";
        string title = "";
        string[] pages;
        if (ViewState["Append"] != null)
        {
            dtResult = ViewState["Append"] as System.Data.DataTable;
        }

        string SearchText = string.Empty;

        if (!dtResult.Columns.Contains("BookMarks"))
        {
            dtResult.Columns.Add(new DataColumn("BookMarks"));

        }
        if (!dtResult.Columns.Contains("Exists"))
        {
            dtResult.Columns.Add(new DataColumn("Exists"));

        }
        if (File.Exists(fileName))
        {
                 PdfReader pdfReader = new PdfReader(fileName);
                ITextExtractionStrategy strategy = new SimpleTextExtractionStrategy();
                //string currentText = PdfTextExtractor.GetTextFromPage(pdfReader, page, strategy);
                IList<Dictionary<string, object>> bookmarks = SimpleBookmark.GetBookmark(pdfReader);
                for (int i = 0; i < bookmarks.Count; i++)
                {
                    var values = bookmarks[i].Values.ToList();
                     title = values[0].ToString();
                     pages = values[1].ToString().Split(' ');
                    currentText = PdfTextExtractor.GetTextFromPage(pdfReader, Convert.ToInt32(pages[0].ToString()));
                    currentText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(currentText)));
                    if (currentText.Contains(title))
                    {
                        DataRow dr = dtResult.NewRow();
                        dr["BookMarks"] = title;
                        dr["Exists"] = "No";
                        dtResult.Rows.Add(dr);
                        dtResult.AcceptChanges();
                    }
                    currentText = "";
                    if (values.Count >= 4)
                    {
                        var ChildValues = (((System.Collections.Generic.List<System.Collections.Generic.Dictionary<string, object>>)(values[3])));
                        int haschild = 0;

                        int count = 0;
                        int n = 0;
                        int m = 0;
                           while (count < ChildValues.Count)
                           {
                                haschild = 1;
                                title = ChildValues[n]["Title"].ToString();

                                pages = ChildValues[n]["Page"].ToString().Split(' ');

                                currentText = PdfTextExtractor.GetTextFromPage(pdfReader, Convert.ToInt32(pages[0].ToString()));

                                currentText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(currentText)));

                               // currentText = currentText.Replace('\n', ' ');
                                if (currentText.Contains(title))
                                {
                                    DataRow dr = dtResult.NewRow();
                                    dr["BookMarks"] = title;
                                    dr["Exists"] = "No";
                                    dtResult.Rows.Add(dr);
                                    dtResult.AcceptChanges();
                                }
                                currentText = "";
                                if (ChildValues[n].Count >= 4)
                                {
                                    int mychildcount = 0;
                                    m = 0;
                                    var mychild = (((System.Collections.Generic.List<System.Collections.Generic.Dictionary<string, object>>)(ChildValues[n]["Kids"])));
                                    while (haschild == 1 || mychildcount < mychild.Count)
                                    {

                                        title = mychild[m]["Title"].ToString();

                                        pages = mychild[m]["Page"].ToString().Split(' ');

                                        currentText = PdfTextExtractor.GetTextFromPage(pdfReader, Convert.ToInt32(pages[0].ToString()));

                                        currentText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.Default, Encoding.UTF8, Encoding.Default.GetBytes(currentText)));

                                       // currentText = currentText.Replace('\n', ' ');
                                        if (currentText.Contains(title))
                                        {
                                            DataRow dr = dtResult.NewRow();
                                            dr["BookMarks"] = title;
                                            dr["Exists"] = "No";
                                            dtResult.Rows.Add(dr);
                                            dtResult.AcceptChanges();
                                        }
                                        currentText = "";
                                        if (mychild[m].Count >= 4)
                                        {

                                            haschild = 1;
                                            mychild = (((System.Collections.Generic.List<System.Collections.Generic.Dictionary<string, object>>)(mychild[m]["Kids"])));

                                        }
                                        else
                                        {

                                            m++;
                                            haschild = 0;
                                            mychildcount++;
                                        }

                                    }
                                    n++;
                                    count++;

                                }
                                else
                                {
                                    n++;
                                    count++;
                                }
                                }

                            }
                    }

                  pdfReader.Close();
        }


            ViewState["Append"] = dtResult;
          GVResult.DataSource = dtResult;
        GVResult.DataBind();

            }