Textbox items auto dissappear after a few mints

[rbozkurt]

Hello,
The same problems exist. How can it be solved?

Data Disappearing from Screen After 30-40 Seconds

Hello, My application is working without any issues. However, there is a different situation. For example, I fill in the sections on the screen and perform calculations. But after about 30 to 40 seconds, all data on the screen is cleared. How can this be resolved? Thank you for your support. [1] [2]