StackOverflow2013

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POGetting a Controls.Image Width and Height
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copied!<p>I'm new to WPF and am trying to use a a Controls.Image. I have it set to stretch when the form expands. I am trying to generate a Drawing.Bitmap at runtime to display on the Controls.Image in WPF. When I generate the Drawing.Bitmap I only want to create one as big as the Image control on the screen is (don't waste cpu cycles). To create the image I have the following code. <code>Bitmap bImage = new Bitmap((int)imgInput.Width, (int)imgInput.Height);</code>imgInput is the Controls.Image and bImage obviously is the Drawing.Bitmap. However the imgInput.Width and Height are showing as 0 at runtime although they are definitely not at design time. If I don't try to dynamically stretch the image to expand with the window there is no issue it shows as expected. So how do I actually get the image. Also does anyone have a better way than creating a Drawing.Bitmap in memory and converting it over to a ImageSource for WPF? I am not loading an image from a URI or anything like that I have to create it in memory.</p> <p>I am binding the image by the following code</p> <pre><code> imgInput.Source = loadBitmap(bImage); } [DllImport("gdi32")] static extern int DeleteObject(IntPtr o); public static BitmapSource loadBitmap(System.Drawing.Bitmap source) { BitmapSource bs = null; IntPtr ip = source.GetHbitmap(); try { bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip, IntPtr.Zero, Int32Rect.Empty, System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions()); } finally { DeleteObject(ip); } return bs; } </code></pre>

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