PictureBox error when Form_Activated is fired

[Mr.No]

Hi

I am getting an error when I minimize and maximize a form where I dynamically load a picture box. Here's the code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim bRet As Boolean
        Dim myimg As Image
        Dim sAppName As String
        Dim sLogo As String
 
        Try
 
            myimg = New Bitmap("C:\Program Files\Common Files\Microsoft Shared\Clipart\cagcat50\BD06675_.WMF")
            picLogo.SizeMode = PictureBoxSizeMode.AutoSize
            picLogo.Image = CType(myimg, Image)
            picLogo.Refresh()
 
        Catch ex1 As Exception
            MessageBox.Show(ex1.ToString())
        Finally
            If Not IsNothing(myimg) Then
                myimg.Dispose()
                myimg = Nothing
            End If
        End Try
 
    End Sub

Before I load the image by clicking the button I can minimize and maximize my form. However, when I load the image in the picturebox, minimize the form and maximize I get the following error popping up:


An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll

Additional information: Invalid parameter used


I get a much longer error message when running the compiled code.

Can anyone help please.

Thanks

[hellswraith]

I am not sure, but I did find somthing for you:
picLogo.Image = CType(myimg, Image)

You don't need to convert the bitmap object into a image object, you can just do this:

Dim myimg as Bitmap
myimg = New Bitmap("C:\Program Files\Common Files\Microsoft Shared\Clipart\cagcat50\BD06675_.WMF")
picLogo.Image = myimg

The reason why is because a Bitmap object is derived from the Image object. It supports all the memebers of the image object, so it can be used in place of where an image object can be used.

[Mr.No]

Thanks hellswraith.

But ... I still get the error when using this:

dim img as Image
 
   img = Image.FromFile("c:\image1.gif")
   picLogo.image = img

On another note, when I run the compiled code it seems to err around the OnPaint event of the picturebox. Do i have to handle anything when dynmically loading images in a picture box?

[MrPolite]

hmm what did that have to do with Form_Activated? do yuo have a code for the onPaint event? Just remember that the width and height of the form is zero when it's minimized. Are you doing anything in form_resize or in onpaint?