SaveFileDialog-problems

24 Nov 2006 3:06 AM

Rikard Bosnjakovic

Greetings

I'm new to both .NET and Visual Basic, but I've got experience of
developing Windows-application earlier (w/o .NET or any framework).

Consider this code:

     Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
         Dim dlg As New SaveFileDialog
         Dim res As DialogResult

         res = dlg.ShowDialog()
         If res = Windows.Forms.DialogResult.OK Then
             MsgBox(dlg.FileName)
         End If
     End Sub

The *only* thing I want from this function is the filename that filename
that the user picked inside the dialog.

However, I get an exception in mscorlib.dll of type
"System.Security.SecurityException":

========================================================================
Request for the permission of type
'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
========================================================================

As a tip for troubleshooting, Visual Studio tells me to use the OpenFile
method to open or save a file. But this is not what I want, I want the
filename only.

Also, issuing something like dlg.InitialDirectory = "T:\" throws the same
exception.

So, I'm running into these tedious problems that I'm unaware of why it's
happening. Visual Studio tells me some file is not trusted or whatever. I
certainly don't give a ditch, but I guess there's some for me unknown
reason for this.

I would be grateful if any could straighten it out and explain why it's
happening as it does.

Thanks.

--
Rikard.

24 Nov 2006 5:36 AM

Cor Ligthert [MVP]

Rikard,

I am too always in trouble with that dialog those boxes return, can you try
it this way.

Dim dlg As New SaveFileDialog
if dlg.ShowDialog <> DialogResult.Cancel then
MessageBox.Show(dlg.FileName)
end if

I hope this helps,

Cor