how to prevent the Image.FromFile() method to lock the file

Question

I am using following code to put JPG\'s into a DataGridView\'s Image cell.

If strFileName.ToLower.EndsWith(\".jpg\") Then
     Dim inImg As Imag         


        

Answer 1

@ Chris: Opening approximately 100 large (3400x2200) images with your final code, I was receiving an invalid argument crash on [img = new bitmap(...], I have seen this before opening an image of zero size, but that was not the case here. I added fs.dispose and successfully opened thousands of images of the same size of the same set as the first test without issue. I'm interested in your comments on this.

Private Function SafeImageFromFile(FilePath As String) As Image
    Dim img As Bitmap = Nothing
    Using fs As New FileStream(FilePath, FileMode.Open, FileAccess.Read)
        Using b As New Bitmap(fs)
            img = New Bitmap(b.Width, b.Height, b.PixelFormat)
            Using g As Graphics = Graphics.FromImage(img)
                g.DrawImage(b, Point.Empty)
                g.Flush()
            End Using
        End Using
        fs.Dispose()
    End Using
    Return img
End Function