Since time
ago I wanted to Post this entry because sometimes we want to read substrings in
a main string. Of course obviously such tool doesn’t exist therefore we must
create it.
Microsoft
provides one tool and it is the following:
Dim text As String = "I have been playing tennis since I was a child"
Dim character As String = "I was a child"Dim number As Integer
number = InStr(1,text, character, CompareMethod.Binary)
In this
case when we want to know which is the position than one substring these code
back to us the position where these. This code is amazing because you can
search a string and not character, in this case when I want to search “I was a
child” into “I have been playing tennis since I was a child”, this back to us
the position where begin “I was a child” than is 34.
I want to
show one example:
We suppose
that I want to modify “I was a child” and then put “I was 19” in the main
string, like this:
“I have
been playing since I was 19”
Well it’s
easy to resolve because we know the method and this is the following:
Dim text As String = "I have been playing tennis since I was a child"
Dim character As String = "I was a child"Dim number As Integer
number = InStr(1,text, character, CompareMethod.Binary)
text = text.remove(number-1,13)'Add -1 because visual basic remove the text one position before the text which we want to remove.
replace(text, " ", "")'remove all spaces
text = text & "I was 19"
'We will see: “I have been playing since I was 19"
