Performance in VB Application

Question

In my VB application,I am copying huge amount of data using VB string? This results in performance issue. What shoul I use in place of VB string to improve performance?

Answer 1

One way to solve this is to pre-allocate a byte/char array that is big enough to hold all your concatenated strings.

If you are using VB.NET, then there is the StringBuilder class.

Answer 2

With VB 6 maybe this can help you out.

Answer 3

Try to make sure you are always passing ByRef wherever possible (in VB6). In VB.Net this is not an issue. Also, maybe preallocate your strings. Analysis and a better description of your programming task can help provide a better answer.

Answer 4

This two part article is good source of information for VB6. Some tips mentioned there are:

• Use $ version of string functions (i.e. Replace$ instead of Replace).
• Use LenB() to check if string is empty (or not).
• Use vbNullString constant instead of "".

Answer 5

Did you try using a StringBuilder from .NET? It is marked as "COM Visible", which means you should be able to use it from VB 6.