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 += " ";
                            }
                        }
                    }
                }