Newbe Question (very basic)

[bskiff]

I'm new here. My name is Bill and I might be bugging you guy regularly now! I have been developing applications for about 12 years now. I am now learning VB.net. It is very similar to the Powerbuilder that I've been using for the past 7 years. I am working my way though the tutorials in the book 'Visual Basic.Net Step by Step'. I'm still in the beginning of the book. I am add script to a menu clicked event. I copied the following code right out of the book:

 

OpenFileDialog1.Filter = "Bitmaps (*.bmp)|*.bmp"

If OpenFileDialog1.ShowDialog() = DialogResult.OK Then

PictureBox1.Image = System.Drawing.Image.FromFile _

(OpenFileDialog1.FileName)

mnuCloseItem.Enabled = True

End If

 

I get an undeclared variable error on 'OpenFileDialog1'. When I look at they solution in the book, it has the same code and no error. Can someone point me in the right direction to track this down? I don't want to just copy the books solution without understanding.

 

Thanks,

Bill

[Bucky]

You need to place an OpenFileDialog component on your form.

Go to the form design view and create one from the toolbox.

[bskiff]

Thanks Bucky! That was it!

[dynamic_sysop]

you could also do it without phisically putting an openfile dialog on the form , like this :

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim od As New OpenFileDialog()

       With od
           .Filter = ("Bitmaps (*.bmp)|*.bmp")
           .ShowDialog()
       End With

       If Not od.ShowDialog = DialogResult.Cancel Then
           Dim im As Image
           im = im.FromFile(od.FileName)
           PictureBox1.Image = im
       End If

   End Sub

[Mothra]

I'm not sure if anyone else would have this problem but, when I ran the code:

 

If Not od.ShowDialog = DialogResult.Cancel Then
    '...
End If

 

It popped up the open file dialog a second time. I found that if I change the line to this:

 

If Not od.ShowDialog.Cancel Then
    '...
End If

 

it worked just fine.