[RESOLVED] Mid Help

Hello,

I am trying to make a program where the users of my site can buy shares of different companies through VB6.

I wrote a program in PHP that will be viewed through the Web Browser in VB 6 (the web browser that comes in the wizard).

Here's my problem:
The stock url is:
http://api.cgeagles.com/cgsx/stock.php?symbol=<stock symbol here>

I need to open a new window with this url in it:
http://api.cgeagles.com/cgsx/buy.php?symbol=<stock symbol here>

The code to open a new browser window is:

VB Code:

Dim frmB As New frmBrowser
frmB.StartingAddress = "http://api.cgeagles.com/cgsx/buy.php"
frmB.Show

First I need a way to check if the page is:
http://api.cgeagles.com/cgsx/stock.p...ue&symbol=XXXX

Second, I need to seperate the XXXX from the URL and add it to the new browser window opening code

Here's what I've tried:

VB Code:

On Error Resume Next
    Me.Caption = brwWebBrowser.LocationName
    Dim s As Long
    Dim ss As Long
    Dim sss As Long
    s = brwWebBrowser.LocationURL
    sss = Mid(s, 56, 60)
    ss = Mid(s, 0, 55)
    If ss = "http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol=" Then
    Dim frmB As New frmBrowser
    frmB.StartingAddress = "http://api.cgeagles.com/cgsx/buy.php?symbol=" + sss
    frmB.Show
    End If

But, when I run it, it just opens up thousands of windows pointing to buy.php?symbol=
(it still lacks a symbol)

Can someone tell me what I'm doing wrong??

Thanks,
- k3p7 :confused:

http://www.vbforums.com/attachment.p...chmentid=47052

you sure this is VB6?

SubStr is in .Net - i think you want this forum

Quote:

---

Originally Posted by bushmobile

http://www.vbforums.com/attachment.p...chmentid=47052

you sure this is VB6?

SubStr is in .Net - i think you want this forum

---

Sorry,

Someone told me to use substr, but I learned to use mid... it still doesn't work though

ok, first get rid of the On Error Resume Next - it's not really considered v. good programming practice to use it unless you really need to and it makes debugging nigh on impossible. Try this:

VB Code:

Const sMatch As String = "http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol="
    Dim frmB As frmBrowser
 
    Me.Caption = brwWebBrowser.LocationName
    If LCase$(Left$(brwWebBrowser.LocationURL, Len(sMatch))) = sMatch Then
        Set frmB = New frmBrowser
        frmB.StartingAddress = sMatch & Mid$(brwWebBrowser.LocationURL, Len(sMatch) + 1)
        frmB.Show
        Set frmB = Nothing
    End If

What event have you got your code in?

Quote:

---

Originally Posted by bushmobile

ok, first get rid of the On Error Resume Next - it's not really considered v. good programming practice to use it unless you really need to and it makes debuggin nigh on impossible. Try this:

VB Code:

Const sMatch As String = "http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol="
    Dim frmB As frmBrowser
 
    Me.Caption = brwWebBrowser.LocationName
    If LCase$(Left$(brwWebBrowser.LocationURL, Len(sMatch))) = sMatch Then
        Set frmB = New frmBrowser
        frmB.StartingAddress = Mid$(brwWebBrowser.LocationURL, Len(sMatch) + 1)
        frmB.Show
        Set frmB = Nothing
    End If

What event have you got your code in?

---

Here's the entire event:

VB Code:

Private Sub brwWebBrowser_DownloadComplete()
    On Error Resume Next
    Me.Caption = brwWebBrowser.LocationName
    Dim s As Long
    Dim ss As Long
    Dim sss As Long
    s = brwWebBrowser.LocationURL
    sss = Mid(s, 56, 60)
    ss = Mid(s, 0, 55)
    If ss = "http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol=" Then
    Dim frmB As New frmBrowser
    frmB.StartingAddress = "http://api.cgeagles.com/cgsx/buy.php?symbol=" + sss
    frmB.Show
    End If
End Sub

there was a slight error with my code - i've edited it (post #4)

Thank you so much!

It works!

- k3p7 :)

no probs :thumb:

you can now mark this thread resolved using the thread tools above your first post - that'll let everyone know you've got your answer.

Quote:

---

Dim s As Long
Dim ss As Long
Dim sss As Long
s = brwWebBrowser.LocationURL
sss = Mid(s, 56, 60)
ss = Mid(s, 0, 55)
If ss = "http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol=" Then
Dim frmB As New frmBrowser
frmB.StartingAddress = "http://api.cgeagles.com/cgsx/buy.php?symbol=" + sss
frmB.Show
End If

---

Personally, I would replace the 'if ss = "http..." line with an INSTR() function. This is fast and effective. That would take care of part one.

For part two: I would use another INSTR() search for the '=', INSRT will return the location then you can use a MID() to capture the stock symbol.

VB Code:

l_int_stringposition = INSTR(1, http_address, "=")
l_str_Stocksymbol = Mid(http_address, l_int_stringposit + 1, 4)

Where the 'l_int_stringposition is the location of the '=' sign and l_str_strocksymbol stores your symbol.

Another way to have a more dynamic query string is to include the LEN() function like:

VB Code:

l_int_stringposition = INSTR(1, http_address, "=")
l_str_Stocksymbol = Mid(http_address, l_int_stringposit + 1, (LEN(Http_address) - (l_int_stringpostion + 1)))

This way you could capture 2, 3, 4 or more charaters stock symbols, like the 5 digit Mutal fund codes, all with the same code.

I noted that in your code you are storing the string '=XXXX' instead of 'XXXX' as desired. The reason is in your mid statement 56 to 60 is 5 steps, not 4 like your symbol.
I dont know what you are doing with the variable after you try to capture it, so I can only assume you are keeping it as a string.

I don't honestly see how the code after; 'if ss = ' exectues though;

Quote:

---

http://api.cgeagles.com/cgsx/stock.php?buy=true&symbol=

---

DOES NOT Equal

Quote:

---

http://api.cgeagles.com/cgsx/stock.p...ue&symbol=XXXX

---

That is way you should use the INSTR() function mentioned earlier.

Hope it helps.