Hi,
Here is a minimal sample that loads the strings to HTMLUI Control using the different thread . Please refer the attached sample and let me know if you are looking something different.
http://www.syncfusion.com/Support/user/uploads/MultiThread_d5aee2b7.zipIn this sample, two threads are called simultaneously, each time when the thread is called the number with thread name is loaded in the HtmlUI control.
Best regards,
Ramu.