Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

excel vba max chars in string

Posted on 2010-09-23
7
1,028 Views
Last Modified: 2012-06-27
I have composes an excel function called StaticMap which appends text to it and it should return more than 255 chars, but when I run it it always stop at around 252.

The call is wrapped around inside a hyperlink function like this:
=HYPERLINK(StaticMap(a1:g1 | "link")

Public Function StaticMap(data as String) As String
...some parsing...
StaticMap = "http://maps.google.com/maps/api/staticmap?size=512x512&maptype=roadmap"
StaticMap = StaticMap & "&markers=color:blue|label:A|" & a
StaticMap = StaticMap & "&markers=color:green|label:B|" & b
StaticMap = StaticMap & "&markers=color:red|label:C|" & c
StaticMap = StaticMap & "&sensor=false"

End Function

While tracing the StaticMap variable it stops at 252 chars.
Is this a limitation of VBA or Excel?
How to allocate more memory to a string object?
0
Comment
Question by:OTNAdmin
7 Comments
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33745719
A String variable can hold a huge number of characters.  Perhaps it would be helpful if you posted all of your code.
0
 
LVL 18

Expert Comment

by:Cluskitt
ID: 33745813
A String var, in theory, can hold up something between 2^16 and 2^32 as its maximum. You really should post the code, cause your problem has another cause.
0
 
LVL 3

Expert Comment

by:madhubabus
ID: 33745867
Please check this link for more details
http://www.vbforums.com/showthread.php?t=395267
0
Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 81

Expert Comment

by:byundt
ID: 33746554
The problem is with the HYPERLINK function not your user-defined function. HYPERLINK (in my test with Excel 2003) cannot receive a 320 character test string, but does work with a 70 character one.

To prove this, put the following formula in a worksheet cell:
=LEN(StaticMap("link"))                 You should be able to return well over 255 characters to the LEN function
0
 
LVL 81

Expert Comment

by:byundt
ID: 33746706
Even Excel 2010 doesn't allow HYPERLINK function to accept more than 255 characters.
0
 

Author Comment

by:OTNAdmin
ID: 33747697
I think you are right =HYPERLINK function in excel has a huge limitation.
I am trying to generate a large URL >260 chars, but its always cut off.

Here is another forum discussing this issue:
http://www.mrexcel.com/forum/showthread.php?t=47346

I am using Excel 2010. I can't believe that has been an outstanding issue since 1997.
0
 
LVL 33

Accepted Solution

by:
Norie earned 500 total points
ID: 33758055
Is it only the URL you want to generate?
How about actually doing that using the Hyperlinks collection?
What you have now is a UDF to create the actual URL and a worksheet function, HYPERLINK , to actually create the link.
You can add a hyperlink to a worksheet with something like this.

Option Explicit

Sub test()
Dim rng As Range

    Set rng = Worksheets(1).Range("A1")

    rng.Hyperlinks.Add rng, StaticMap(rng), , , "Static Map"

End Sub

Public Function StaticMap(data As Range) As String

    StaticMap = "http://maps.google.com/maps/api/staticmap?size=512x512&maptype=roadmap"
    StaticMap = StaticMap & "&markers=color:blue|label:A|"
    StaticMap = StaticMap & "&markers=color:green|label:B|"
    StaticMap = StaticMap & "&markers=color:red|label:C|"
    StaticMap = StaticMap & "&sensor=false"


End Function

Open in new window

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tutorial explains how to create a series of drop-down lists that are dependent upon prior selections to guide (“force”) the user to make the correct selection and reduce data errors within Microsoft Excel. Excel 2010 was used for this tutorial;…
Freeze panes is an option within all variants of Excel to enable parts of a sheet to remain stationary when the cursor is in another part of the sheet. This is a very useful feature which is overlooked or under used.
This Micro Tutorial demonstrates how to create Excel charts: column, area, line, bar, and scatter charts. Formatting tips are provided as well.
This Micro Tutorial demonstrates in Microsoft Excel how to consolidate your marketing data by creating an interactive charts using form controls. This creates cool drop-downs for viewers of your chart to choose from.

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question