test.cs

[HttpPost]
public HttpResponseMessage DoComplexFormatting(string ConnectionID)
{
    // connect the WebSocketHandler with the ConnectionID
    WebSocketHandler wsHandler = WebSocketHandler.GetInstance(ConnectionID);

    byte[] data;

    // save the current selection to a byte array
    wsHandler.Selection.Save(out data, BinaryStreamType.InternalUnicodeFormat);

    // load the byte array into a ServerTextControl
    using (TXTextControl.ServerTextControl tx = new TXTextControl.ServerTextControl())
    {
        tx.Create();
        tx.Load(data, TXTextControl.BinaryStreamType.InternalUnicodeFormat);

        // loop through all words and format the word "TextControl"
        for (int i = 0; i < tx.Text.Length; i++)
        {
            tx.Select(i, 1);
            tx.SelectWord();

            if (tx.Selection.Text == "TextControl")
            {
                tx.Selection.Bold = true;
                tx.Selection.Italic = true;
                tx.Selection.ForeColor = Color.Red;

                i += tx.Selection.Text.Length;
            }
        }

        // save the document to a byte array and load it into the WebSocketHandler
        tx.Save(out data, TXTextControl.BinaryStreamType.InternalUnicodeFormat);
        wsHandler.Selection.Load(data, BinaryStreamType.InternalUnicodeFormat);
    }

    return new HttpResponseMessage()
    {
        StatusCode = HttpStatusCode.OK
    };
}