VB6 VS VB.Net 2005 Syntax
- Thread starter tracky
- Start date
Tq
TQ boss
let's say i want to capture the last 2 text from right?
e.g.
TESTING
so i wanted to capture the "NG"
in VB6 i will code like
Right("TESTING",2)
but it is NOT working in VB.NET
Please help
TQ Very Much!!
TQ boss
let's say i want to capture the last 2 text from right?
e.g.
TESTING
so i wanted to capture the "NG"
in VB6 i will code like
Right("TESTING",2)
but it is NOT working in VB.NET
Please help
TQ Very Much!!
DiskJunky
Well-known member
er... actually there's a much easier way. At the top of the code window, type "Import Microsoft.VisualBasic.Strings". Or, in your code you can reference the namespace directly with;
Same "Strings." prefix for Left(), Right(), Reverse() etc...
VB.NET:
Dim subText As String = Strings.Mid("this is another piece of text", 5, 6)DiskJunky
Well-known member
true but for some of the functions, the .net implementation (if any) doesn't quite have the same level of functionality. Even after using .net (and c# so I'm familiar with the .net way) for a few years, using the vb functions is easier. Besides, they wrote it into the language namespace for a reason too - and extended it. It wasn't entirely for legacy purposes I think. Still, it's just my opinion, don't take this too seriously 
chris van duin
Member
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If you are serious about moving from vb6 to .Net I would suggest you stay away from the legacy stuff as there is no garentee it will still be supported in future versions.
Once you use it often enough, the .substring method becomes more intuitive to use. Also, it is simpler to migrate your code over to C# if you ever need to as the .substring method is pure .Net where as using Left, Right, & Mid is VB6.
It comes down to personal choice in the end but I recommend you stick with .substring
Once you use it often enough, the .substring method becomes more intuitive to use. Also, it is simpler to migrate your code over to C# if you ever need to as the .substring method is pure .Net where as using Left, Right, & Mid is VB6.
It comes down to personal choice in the end but I recommend you stick with .substring
chris van duin
Member
- Joined
- Jan 17, 2008
- Messages
- 8
- Programming Experience
- 10+
One other nasty surprise with .Net for VB6 programmers is that arrays in .NET are 0-based whereas, VB6 functions such as Left, Mid & Right are 1-based. That is, Mid(myString,1,1) starts from the first character in myString. myString.substring(1,1) actually returns the second character, as the first character is position 0 in the string array.
Also, myString.Length returns the number of characters in your string. If you want the last character is your string you need to subtract one from length.
For example:
dim myString as string = "hello"
' Character positions
' 0 1 2 3 4
' h e l l o
console.writeline(myString.length()) ' = 5 -- equivelent to Lent(myString)
console.writeline(myString.substring(0,2) ' = he -- equivelent to left(myString, 2)
console.writeline(myString.substring(1,1) ' = e -- equivelent to mid(mystring, 2,1)
console.writeline(myString.substring(myString.Length -1 - 2) ' lo -- equivelent to right(myString, 2)
Also, myString.Length returns the number of characters in your string. If you want the last character is your string you need to subtract one from length.
For example:
dim myString as string = "hello"
' Character positions
' 0 1 2 3 4
' h e l l o
console.writeline(myString.length()) ' = 5 -- equivelent to Lent(myString)
console.writeline(myString.substring(0,2) ' = he -- equivelent to left(myString, 2)
console.writeline(myString.substring(1,1) ' = e -- equivelent to mid(mystring, 2,1)
console.writeline(myString.substring(myString.Length -1 - 2) ' lo -- equivelent to right(myString, 2)
