substring and the indexOf method

Question

My assignment in Visual Basic 2010 is to build a order form that has two text boxes, one for the name and the other for the address.

And we\'re suppose to use the <

Answer 1

Since this is a homework question, I will answer with a question or several:

• How would you normally enter a full address into a text box?
• How would each part of the address be distinguishable from another?
• Once you figure out how this can be done, think about IndexOf again.

Answer 2

You'd typically use IndexOf to -

See if a string contained something

If someString.IndexOf("Avenue") > - 1 Then
   'do something
End If

Get the start position of a value in a string , this could then be used to extract part of the string. e.g. someString.Substring(someString.IndexOf("@"),10) would get then next ten characters starting from where the "@" character was found in your string.

Bear in mind you'll always need to handle scenarios where IndexOf will return -1 if it does not find the string your searching for, so your code will have to handle that eventuality.