I need some help in Visual Basic (Try/Catch Blocks)?

Question

I am making a project where the user puts their name and sales amount in two different text boxes, and it gives the amount of other things such as commission, deductions, net pay, etc.

If the user does not put a name into either of the first two text boxes, an error message must come up.  

I got the sales textbox error message to work:
Catch ex As Exception
            MessageBox.Show("Sales amount must be numeric", "Invalid Input", MessageBoxButtons.OK)

But when I try the same thing for the name textbox, it does not work.  I am not sure what to put in the Try area of the code.

For instance:

     Try
          nameTextBox.Text = ""
       Catch ex As Exception
            MessageBox.Show("Enter a name", "Invalid Input", MessageBoxButtons.OK)


I probably am not making myself clear enough to answer this, but I just don't understand what to put under the "Try" area of my script in order for it to catch the error.

Any help is appreciated

vérité · Accepted Answer

I wouldn't use Try...Catch in that instance... is there an "OK" button, or some button that processes this stuff after the user enters the data?

In that button's code, just have a couple IF statements, one for each check that you do. The statement itself will have the check, if it fails, go into the IF statement ~ call up a msgbox telling the user how they screwed up, and then do a 'return' to exit the button's processing.

After the checks at the beginning of the button's code, then you do your processing of the data.

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I need some help in Visual Basic (Try/Catch Blocks)?

1 Answer