WPF cannot implicitly convert system.drawing.bitmap to media.brush

Question

I want to change the background of a button manually in my WPF app.

I have an image imported into my resources and I want to do:

MyButton.Background = MyProject.Properties.Resources.myImage;

But I get the error:

cannot implicitly convert system.drawing.bitmap to media.brush

How can I do this??

Background is the wrong property, you need something like BackgroundImage — CSharpie, Dec 15 '13 at 22:37
@CSharpie you're wrong, `Background` is the right property. You need to set it to an `ImageBrush`. — Clemens, Dec 15 '13 at 22:38

score 9 · Accepted Answer · edited May 23 '17 at 11:45

9

You should read about brushes first here.

And then use ImageBrush, something like this:

MyButton.Background = new ImageBrush(...);

(or, maybe, put the brush into resources...)

UPDATE

You can find how to create imageSource from bitmap easilly. for example, here. Like:

var bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(MyProject.Properties.Resources.myImage.GetHbitmap(),
                                  IntPtr.Zero,
                                  Int32Rect.Empty,
                                  BitmapSizeOptions.FromEmptyOptions());
MyButton.Background = new ImageBrush(bitmapSource);

edited May 23 '17 at 11:45

Community

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answered Dec 15 '13 at 22:37

JleruOHeP

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This will not work, as `myImage` is of type `System.Drawing.Bitmap`. – Clemens Dec 15 '13 at 22:42
I`ve added one of the ways to transform bitmap to source – JleruOHeP Dec 15 '13 at 22:54

score 5 · Answer 2 · answered Dec 15 '13 at 22:48

In a WPF application, you do usually not add image resources as you did in WinForms.

Instead you add the image file directly to your Visual Studio project, just like any other file. If there are multiple images, it may make sense to put them in a subfolder of the project (e.g. called "images"). The Build Action of that file has to be set to Resource (which is the default for image files).

Now you can create a BitmapImage from a Pack URI to that file.

Finally you create an ImageBrush from the BitmapImage to set the Background property.

var uri = new Uri("pack://application:,,,/images/myImage.jpg");
var image = new BitmapImage(uri);
MyButton.Background = new ImageBrush(image);

WPF cannot implicitly convert system.drawing.bitmap to media.brush

2 Answers2

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