Question

How to resize the Picturebox so it can show the full image if the image size is less than monitor size ! I wrote a code which can not resize (but still posting the code)!

Code before loading image on a button click

Dim bmp As Bitmap
bmp = New Bitmap(path)
If bmp.Width < picBox.Image.Width Then picBox.Width = bmp.Width : If bmp.Height < picBox.Image.Height Then picBox.Height = bmp.Height
picBox.Invalidate() : picBox.Refresh()
'picBox.SetBounds(x,y,width,height)

The code does not resize the picturebox, it’s just untouched !

Edit

The form has the picBox and a groupbox [dock enabled] control only.

bmp = New Bitmap(dlgOpen.FileName)
picBox.SizeMode = PictureBoxSizeMode.Normal
Dim w As Integer = picBox.ClientSize.Width
Dim h As Integer = picBox.ClientSize.Height
If bmp.Width > w Then
            w = bmp.Width
End If
If bmp.Height > h Then
            h = bmp.Height
End If
If w > Me.Width - grpBox.Width Then
            w = Me.Width - grpBox.Width
End If
If h > grpBox.Height Then
            h = grpBox.Height
End If
picBox.ClientSize = New Size(w, h)
picBox.ImageLocation = dlgOpen.FileName

This code does not re-sizes the picture box either .

Answer 1

Picture-box can be re-sized only before loading the image, there after it is read only and has no effect !