如何使用iTextSharp进行文本格式化

Question

如何使用iTextSharp进行文本格式化我正在使用iTextSharp从PDF中读取文本内容。我也能读到这一点。但我正在丢失文字格式，如字体，颜色等。有没有办法获得格式。以下是我用于确切文本的代码段 -PdfReader reader = new PdfReader("F:\\EBooks\\AspectsOfAjax.pdf");textBox1.Text = ExtractTextFromPDFBytes(reader.GetPageContent(1));private string ExtractTextFromPDFBytes(byte[] input){     if (input == null || input.Length == 0) return "";     try     {         string resultString = "";         // Flag showing if we are we currently inside a text object         bool inTextObject = false;         // Flag showing if the next character is literal  e.g. '\\' to get a '\' character or '\(' to get '('         bool nextLiteral = false;         // () Bracket nesting level. Text appears inside ()         int bracketDepth = 0;         // Keep previous chars to get extract numbers etc.:         char[] previousCharacters = new char[_numberOfCharsToKeep];         for (int j = 0; j < _numberOfCharsToKeep; j++) previousCharacters[j] = ' ';         for (int i = 0; i < input.Length; i++)         {             char c = (char)input[i];             if (inTextObject)             {                 // Position the text                 if (bracketDepth == 0)                 {                     if (CheckToken(new string[] { "TD", "Td" }, previousCharacters))                     {                         resultString += "\n\r";                     }                     else                     {                         if (CheckToken(new string[] {"'", "T*", "\""}, previousCharacters))                         {                             resultString += "\n";                         }                         else                         {                             if (CheckToken(new string[] { "Tj" }, previousCharacters))                             {                                 resultString += " ";                             }                         }                     }                 }