?
Solved

Filter files with these extensions (File Dialog Box)

Posted on 2001-06-11
3
Medium Priority
?
227 Views
Last Modified: 2010-05-02
Hi again,

VB6 (sp4) ADO

I have two concerns. I want to display all files with these extensions: *.htm and *html in my file dialog box, and I want to check to see if the proper file extension was selected before I save its location to the Windows registry. Thanks for your help (as always).

With frmOptions.cd_Options
      .DialogTitle = "Connect to application's back-end database."
      .InitDir = "C:\DS3VB6\DS3_DATA\"
      .FileName = "" 'App_BackEndDBName
      .Filter = "Access (*.mdb)| *.mdb"
      .CancelError = True 'Causes an error if user clicks on cancel
      .ShowOpen
    End With
'Remember that the file names are case sensitive
    Do While UCase(Right(Trim(frmOptions.cd_Options.FileName), Len("DS3DATA.MDB"))) <> "DS3DATA.MDB"
      MsgBox "You are trying to link to the wrong file.", vbCritical, App.Title
      frmOptions.cd_Options.ShowOpen
    Loop
      App_InventoryPath = Trim(frmOptions.cd_Options.FileName)
      frmOptions.txtInventoryPath = App_InventoryPath
    'Save the Database location
    SaveSetting App.Title, "App_Elements", "InventoryPath_DB", App_InventoryPath


-ADawn
0
Comment
Question by:ADawn
  • 2
3 Comments
 
LVL 6

Expert Comment

by:JonFish85
ID: 6179208
To limit the users to HTML files:
.Filter = "HTML Files (*.HTML, *.HTM)|*.html;*.htm"

To check the type (place this right after the line of code to show the dialog:
If Right$(UCase(CommonDialog1.FileName), 4) <> "HTML" Or Right$(UCase(CommonDialog1.FileName), 3) <> "HTM" Then
  MsgBox "Invalid Selection!", vbCritical, "Error"
  Exit Sub
Else
  'Write to registry
End If
0
 
LVL 6

Expert Comment

by:JonFish85
ID: 6179211
er, change the ...<> "HTML" Or Right$... to ...<> "HTML" And Right$...
0
 
LVL 2

Accepted Solution

by:
TravisHall earned 80 total points
ID: 6179341
Jon's checking code is okay, but it would recognise a longer file extension ending in HTML or HTM as valid, when it isn't. For example, "somefile.chtml" would pass the test, and it shouldn't. To modify that code slightly:

If Right$(UCase(CommonDialog1.FileName), 5) <> ".HTML" Or Right$(UCase(CommonDialog1.FileName), 4) <> 
".HTM" Then
 MsgBox "Invalid Selection!", vbCritical, "Error"
 Exit Sub
Else
 'Write to registry
End If

That would fix that case, and also the case when the full file name is "somethinghtml" (which has no extension).

However, it should also be noted that all file names selected when using the appropriate filter must match that filter. That's what the filter is for. I guess there are times when one should not assume that things will work the way they are supposed to, but that does seem a little too paranoid to me, for the general case.
0

Featured Post

Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

I’ve seen a number of people looking for examples of how to access web services from VB6.  I’ve been using a test harness I built in VB6 (using many resources I found online) that I use for small projects to work out how to communicate with web serv…
When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

569 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