I have an issue with ASP.NET web form page designed to work on tablets. This page contains a Telerik rad Grid, and this grid contains (Rating column, dropdown column, text box column and file upload column).
This grid is designed to insert vehicle inspection data on it and once the user finish, it will save every row in Data base.(Rows count is 127). (I added a picture for the Grid).
When the user work on it via tablets, the process will take a while to make sure all data is correct and cover all the inspection points and sometimes the tablet screen will turn off during the process.
The problem is when the tablet screen turned off and open it again, we tried to save our data, but it seems something happened and it's not saving the data. It's just loading then nothing happens.
After we clicked a button and the page do a postback we were able to save data but we lose the files on file upload control.
I don't have any explanation how this problem happens, could you please help me to solve this or if you have any explanation for it.