/// <summary>

     ///

     /// </summary>

     public partial class Form2 : Form

     {

         private mshtml.IHTMLDocument2 hc;

         private mshtml.HTMLDocument hc1;

         //subdir in ApplicationData Folder, change whatever you think

         private const string M_WORKPATH = "someMCEenabledFolder";

         //easilly navigate into resources

         private const string M_RESOURCE = "WF_tinyMCE";

         /// <summary>

         ///

         /// </summary>

         public override string Text

         {

             get

             {

                 return m_text;

             }

             set

             {

                 m_text = value;

             }

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="source"></param>

         /// <param name="target"></param>

         public void CopyFile(Stream source, Stream target)

         {

             byte[] buffer = new byte[0x10000];

             int bytes;

             try

             {

                 while ((bytes = source.Read(buffer, , buffer.Length)) > )

                 {

                     target.Write(buffer, , bytes);

                 }

             }

             finally

             {

                 target.Close();

             }

         }

         /// <summary>

         /// Get the correct internal path where tinyMCE and work file will be stored

         /// </summary>

         /// <param name="subPath"></param>

         /// <returns></returns>

         private string getWorkPath(string subPath)

         {

             string AppFolder = System.Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);

             return System.IO.Path.Combine(AppFolder, M_WORKPATH + "\\" + subPath);

         }

         private string m_strMCEDir = "";

         private string m_strMCESettings = "";

         /// <summary>

         /// Prepare tinyMCE package

         /// </summary>

         public void PrepareTinyMCE()

         {

             string sCpy = getWorkPath("tinyMCE.zip");

             m_strMCEDir = getWorkPath("tinyMCE");

             m_strMCESettings = getWorkPath("tinyMCE.txt");

             if (!Directory.Exists(getWorkPath("")))

             {

                 Directory.CreateDirectory(getWorkPath(""));

             }

             string sMCE = "tinyMCE\\tinyMCE\\jscripts\\tiny_mce";

             if (!Directory.Exists(m_strMCEDir) || !File.Exists(getWorkPath(sMCE) + "\\tiny_mce.js"))

             {

                 string sMce = M_RESOURCE + ".resources.tinyMCE.zip";

                 Stream strFile = GetResourceFile(sMce);

                 FileStream fs = new FileStream(sCpy, FileMode.OpenOrCreate);

                 CopyFile(strFile, fs);

                 strFile.Close();

                 Directory.CreateDirectory(m_strMCEDir);

                 FastZip fz = new FastZip();

                 fz.ExtractZip(sCpy, m_strMCEDir, FastZip.Overwrite.Never, null, null, null);

                 File.Delete(sCpy);

             }

             //settings

             {

                 string sMce = M_RESOURCE + ".resources.tinyMCE.txt";

                 Stream strFile = GetResourceFile(sMce);

                 StreamReader sr = new StreamReader(strFile);

                 m_strMCESettings = sr.ReadToEnd();

                 sr.Close();

             }

             m_strMCEDir = sMCE;

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="File"></param>

         /// <returns></returns>

         public Stream GetResourceFile(string File)

         {

             if (File == null || File == "")

                 return null;

             try

             {

                 return this.GetType().Assembly.GetManifestResourceStream(File);

             }

             catch (Exception)

             {

                 return null;

             }

         }

         /// <summary>

         ///

         /// </summary>

         public void doInit()

         {

             object empty = System.Reflection.Missing.Value;

             //mshtml.IHTMLDocument doc2 =webBrowser1.Document;

             //IHTMLDocument2 doc = (mshtml.IHTMLDocument2)webBrowser1.Document;

             //webBrowser1.Document.Write("<html><body></body></html>");

             //webBrowser1.Document.Body.innerHTML = "";//

             //this.webBrowser1.Navigate("about:blank", ref empty, ref empty, ref empty, ref empty);

             this.webBrowser1.Navigate("about:blank");

             hc = (mshtml.IHTMLDocument2)webBrowser1.Document.DomDocument;//(mshtml.IHTMLDocument2)

         }

         private string m_text = "", m_type = "", m_css = "";

         /// <summary>

         ///

         /// </summary>

         /// <param name="Text"></param>

         public void ShowText(string Text)

         {

             m_text = Text;

             showText(false);

             this.Show();

             //this.Dispose();

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="Text"></param>

         /// <param name="Type"></param>

         /// <param name="CSSFile"></param>

         /// <returns></returns>

         public string EditText(string Text, string Type, string CSSFile)

         {

             m_text = Text;

             m_type = Type;

             m_css = CSSFile;

             PrepareTinyMCE();

             showText(true);

             this.ShowDialog();

             m_text = ((mshtml.IHTMLDocument3)webBrowser1.Document.DomDocument).getElementById("elm1").innerText;

             return m_text;

             //this.Dispose();

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="edit"></param>

         private void showText(bool edit)

         {

             StringBuilder sb = new StringBuilder();

             sb.AppendLine("<HTML><HEAD><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" content=\"no-cache\">");

             if (edit && !string.IsNullOrEmpty(m_strMCESettings))

             {

                 sb.Append("<script type=\"text/javascript\" src=\"");

                 sb.Append(this.m_strMCEDir.Replace('\\', '/')); //IE compatible

                 sb.AppendLine("/tiny_mce.js\">");

                 sb.AppendLine("</script>");

                 sb.AppendLine(this.m_strMCESettings);

                 sb.AppendLine("</HEAD><BODY><FONT FACE=\"Arial\" SIZE=\"-1\">");

                 sb.AppendLine("<form method=\"\" action=\"\" onsubmit=\"return false;\">");

                 sb.AppendLine("<textarea id=\"elm1\" name=\"elm1\" style=\"width: 100%;height:100%\">");

             }

             else

             {

                 sb.AppendLine("</HEAD><BODY><FONT FACE=\"Arial\" SIZE=\"-1\">");

             }

             sb.AppendLine(m_text);

             if (edit && !string.IsNullOrEmpty(m_strMCESettings))

             {

                 sb.AppendLine("</textarea>");

             }

             sb.AppendLine("</FONT></BODY></HTML>");

             //get CSS to local folder

             if (File.Exists(m_css))

             {

                 File.Copy(m_css, getWorkPath(m_type + ".css"), true);

                 m_css = m_type + ".css";

             }

             string t = sb.Replace("[CSS]", m_css).ToString();

             string sDoc = getWorkPath(m_type + ".html");

             StreamWriter sw = new StreamWriter(sDoc, false, System.Text.Encoding.GetEncoding());

             sw.Write(t);

             sw.Close();

             try

             {

                 this.webBrowser1.Navigate(sDoc);

             }

             catch (Exception e)

             {

                 string s = e.Message;

             }

         }

         /// <summary>

         ///

         /// </summary>

         public Form2()

         {

             InitializeComponent();

             doInit();

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="sender"></param>

         /// <param name="e"></param>

         private void Form2_Load(object sender, EventArgs e)

         {

             //EditText("tinyMCE涂聚文 intergrated into .NET."

             //+"A bit uncomfortable way through IE."

             //+"But if you manage it good, you can use it for free."

             //+"Don't forget to press save in MCE toolbar."

             //+ "", "tempfilename", "yourCSS.css");

         }

         /// <summary>

         ///

         /// </summary>

         /// <param name="sender"></param>

         /// <param name="e"></param>

         private void button1_Click(object sender, EventArgs e)

         {

            // MessageBox.Show(webBrowser1.Document.DomDocument.ToString());

             string s = this.webBrowser1.Document.Body.InnerHtml;

             string ss = this.webBrowser1.Document.Body.InnerText;

             System.Windows.Forms.HtmlDocument document = this.webBrowser1.Document;

             //if (document != null && document.All["elm1"] != null && String.IsNullOrEmpty(document.All["elm1"].GetAttribute("value")))

             //{

             System.Windows.Forms.MessageBox.Show(document.All["elm1"].TagName.ToString());

             System.Windows.Forms.MessageBox.Show(document.All["elm1"].OuterHtml);

             //System.Windows.Forms.MessageBox.Show(document.All["elm1"].DomElement.ToString());

             System.Windows.Forms.MessageBox.Show(document.All["elm1"].InnerText);

             System.Windows.Forms.MessageBox.Show(webBrowser1.Document.GetElementsByTagName("textarea")[].TagName);

            // System.Windows.Forms.MessageBox.Show(document.All["elm1"].GetAttribute("value"));

             //}

            //MessageBox.Show(webBrowser1.DocumentText);//

             HtmlElement textArea = webBrowser1.Document.All["elm1"];

             HtmlElementCollection elements = webBrowser1.Document.GetElementsByTagName("textarea");

             foreach (HtmlElement element in elements)

             {

                 if (element.InnerHtml.Contains("Rich text editor"))

                 {

                     // do something

                 }

             }

         }