Hi, I am trying to build a list according to the range of values selected by the user. These values are taken from 4 text boxes. If the user does not enter values, the program assigns maximum and minimum values by default. I did all the possible combinations and only in the case of not receiving values in the TB_Excitacion2 the program gives me an error. I can't figure out what the reason is. Can someone lend me a hand?
Thank you Abraham for your suggestion. You were wright in everything. All the 4 textboxes have NumbersOnly option selected in the designer. Nevertheless, although the numeric pad appears, points and dashes can be added and the app crushes. I did not tested that before but now I will. As for the database, a number was missing in the excitation column. Now it works as I wanted. Thanks again