In my application there is one custom control which opens the outlook send email window along with prepopulating few things in the email block.

Once I click on the custom control and come back to the main application, the autocomplete control present on that screen stops working properly. They will not set the property value properly.

I couldn't find the exact connection between the two controls.

For reference, I have attached the code of the custom control.

Any suggestion will be highly appreciated.