Question related to DBNull

Help
1

I have data table and if one of data is absent the robot should show an error to user
but if I use DBNull then it just regards there is no problem with the flow.
If i want to deal with this situation what is good method??

anyone can show example robots??

2

Try IsNothing keyword to check whether the data is NULL or not.

3

You can refer this for better understanding on this