Question

if a textbox has 1 digit or a number that’s larger than 31, the program will crash. how should I stop that?

so far, i have this code:

if (dd.Text.Length <= 1 || dd.Text > 31)
    return; 

obviously, that’s wrong… 🙁

Answer 1

dd.Text > 31

The above code is comparing a string to an int. You should try:

int val = 0;
if (Int32.TryParse(dd.Text, out val))
{
   if (val > 31) return;
}