FolderBrowserDialog

[sacsac]

I have discovered a problem with the FolderBrowserDialog. If instead of selecting a folder with a left-click the mouse right-click is used, then a trappable error #99 occurs ("External component has thrown an exception"). Any further interaction with the dialog then throws a system error "Attempted to read or write protected memory", followed by application crash. Has anyone else encountered this, and if so what solution was used? Here is a sample of the code I am using:

Using fd As New FolderBrowserDialog

With fd

.RootFolder = Environment.SpecialFolder.Desktop
.SelectedPath = "C:\"
Try
If .ShowDialog Windows.Forms.DialogResult.OK Then
MessageBox.Show(.SelectedPath & " selected")
''do something
''
''''''''''''''
Else
MessageBox.Show("No Folder selected")
End If
Catch ex As Exception
MessageBox.Show(Err.Number & vbCrLf & ex.Message)

End Try

End With

End Using

 

[jebenson]

I copied your code into a test project in VS 2008 and I could not replicate the error you are getting. I compiled the code against the 3.5, 3.0 and 2.0 versions of the framework, and I got no errors. I right-clicked items, created new folders, etc.

What version of Visual Studio and the .NET Framework are you using?


I used to rock and roll every night and party every day. Then it was every other day. Now I'm lucky if I can find 30 minutes a week in which to get funky. - Homer Simpson

Arrrr, mateys! Ye needs ta be preparin' yerselves fer Talk Like a Pirate Day!

 

[sacsac]

Hi jebenson

I'm using VS2010 with .NET4

 

[jebenson]

Unfortunately, I do not have access to VS 2010.

Try changing the target framework to 3.5 or lower, and see if the error still occurs.


I used to rock and roll every night and party every day. Then it was every other day. Now I'm lucky if I can find 30 minutes a week in which to get funky. - Homer Simpson

Arrrr, mateys! Ye needs ta be preparin' yerselves fer Talk Like a Pirate Day!

 

[sacsac]

Whatever the target .net framework the problem persists. However, I now believe that this is probably a problem with my development PC, and nothing to do with the programming! I note that the issue does not exist when the compiled application is run on other machines. Also, I encounter a similar problem with my PC when right-clicking a folder in Windows Explorer. I have no idea what is causing this - maybe I'll discover it in the fulness of time. Thanks for your help anyway jebenson!