Hello there! I am fairly new to C# and I'm having a problem coding a specific assignment. I was wondering if anyone could provide a few tips on what I'm doing wrong. I'm trying to have it catch 3 different things. That there is a decimal value, that there actually is something inserted, and that the number is within range of 0 and 1000. All of these need to display a different message box also. Down below is so far what I've done. I'm able to do the valid range but it's still calculating the numbers when I click calculate. Aslo when there is no value entered it brings up the "Please enter a valid subtotal" message box instead of the "Requires Subtotal" box. Thanks!
Let's think about the logic of your program, in comments:
//convert the value the user typed into a decimal
decimal subtotal = Decimal.Parse(txtSubtotal.Text);
//check it's within range
if (subtotal < 0 || subtotal > 1000)
MessageBox.Show("Please enter a valid range");
//check if the user typed anything or not
if (txtSubtotal.Text == "")
decimal discountPercent = .25m;
Can you see a problem?
Here's a clue, I've stripped the code, leaving just 2 relevant comments:
//first, take the value the user typed, and convert it to a decimal
//then, check if the user typed something
What strikes you about this logic?
When you start off in programing, write the commentfirst in plain english and embody the logic, then turn the comments into code. You end up with a program that works because you first wrote it in the language that you think in, and you have a beautifully commented code at the end