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how to parse unknown data into array

Posted on 2006-04-17
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Last Modified: 2010-05-01
I need to allow a user to execute a sql statement such as

"SELECT FirstName, LastName, Company from ContactTable"

The SQL Statement is passed to a 3rd Party application via an API call.  I do not have direct acess to the data (can't use ADO or ODBC, etc.).

The data is then returned to me in a buffer as a string with fields delimited by "|" and records deliimited by CRLF

I can use Split to parse the buffer and put the data into a user-defined type.

The challenge is, the user can "SELECT" from many different fields.  I will not know which fields they are going to be picking.  So I am trying to figure out how to dynamically store the data in such a way that it could be displayed in a grid control.

Keep in mind, non of this can happen with data-bound controls.  It all has to happen in memory with arrays and UDT's.

Also,  it does not have to happen in VB.  If C++ or a .NET language would be more appropriate, then I could do that also.

thanks,  Kevin.
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Question by:kevinvw1
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4 Comments
 

Author Comment

by:kevinvw1
ID: 16470581
Also,  I do not know how many fields will be returned by the SELECT statement...
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Accepted Solution

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Mark_FreeSoftware earned 2000 total points
ID: 16473313

you can use strings, and convert numbers to strings with CString(number here)

and use an array of undeclared size like this:

dim tmp2() as string
example:


Dim str As String
Dim str2() As String
Dim n As Long
str = "This is an array test"
str2 = Split(str, " ")
For n = LBound(str2) To UBound(str2)
   MsgBox str2(n)
Next


this will give you 5 messagebox with the different words
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Author Comment

by:kevinvw1
ID: 16473841
Thanks, I figured it out.  I was overthinking this.

All I needed to do was define a multi-dimensional array b(c,d).  Here is my code.

dim b() as string

' assume that a variable teststring holds records delimited by carriage-return line-feed
    z = Split(teststring, vbCrLf)
    recordcount = UBound(z)
'assume that each record has fields delimited by "|"
    y = Split(z(0), "|")
    fieldcount = UBound(y)
   
    ReDim b(recordcount, fieldcount)
       
    For c = 0 To recordcount
      rec = Split(z(c), "|")
      For d = 0 To fieldcount
        b(c, d) = rec(d)
      Next d
    Next c


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LVL 13

Expert Comment

by:Mark_FreeSoftware
ID: 16548015
tthanx for the points, and happy coding!
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