Change WPF window background image in C# code

Question

I have a couple of Images configured as application resources.

When my application starts, the background of the main window is set via XAML:

<Window.Background>
    <ImageBrush ImageSource="/myapp;component/Images/icon.png" />
</Window.Background>

If a given event occurs, I'd like to change this background to another resource ("/myapp;component/Images/icon_gray.png").

I've tried using two constants:

private static readonly ImageBrush ENABLED_BACKGROUND =
    new ImageBrush(new BitmapImage(new Uri("/myapp;component/Images/icon.png")));
private static readonly ImageBrush DISABLED_BACKGROUND =
    new ImageBrush(new BitmapImage(new Uri("/myapp;component/Images/icon_gray.png")));

... but naturally, I get an exception with Invalid URI.

Is there a simple way to change the background image (via this.Background = ...) of a WPF window using either the pack Uri or the resource (i.e.: Myapp.Properties.Resources.icon)?

Darko Kenda · Accepted Answer · 2010-10-24 19:02:17Z

42

What about this:

new ImageBrush(new BitmapImage(new Uri(BaseUriHelper.GetBaseUri(this), "Images/icon.png")))

or alternatively, this:

this.Background = new ImageBrush(new BitmapImage(new Uri(@"pack://application:,,,/myapp;component/Images/icon.png")));

answered Oct 24, 2010 at 19:02

Darko Kenda

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1 Comment

biasedbit Over a year ago

Used the second, since I was defining a static constant. Thanks!

wonea · Accepted Answer · 2018-07-20 12:16:33Z

10

Here the XAML Version

<Window.Background>
    <ImageBrush>
        <ImageBrush.ImageSource>
            <BitmapImage UriSource="//your source .."/>
        </ImageBrush.ImageSource>
    </ImageBrush>
</Window.Background>

edited Jul 20, 2018 at 12:16

wonea

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answered Jan 22, 2014 at 13:15

WiiMaxx

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Comments

Gurucharan Balakuntla Maheshku · Accepted Answer · 2010-10-24 19:16:35Z

6

The problem is the way you are using it in code. Just try the below code

public partial class MainView : Window
{
    public MainView()
    {
        InitializeComponent();

        ImageBrush myBrush = new ImageBrush();
        myBrush.ImageSource =
            new BitmapImage(new Uri("pack://application:,,,/icon.jpg", UriKind.Absolute));
        this.Background = myBrush;
    }
}

You can find more details regarding this in
http://msdn.microsoft.com/en-us/library/aa970069.aspx

answered Oct 24, 2010 at 19:16

Gurucharan Balakuntla Maheshku

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Comments

rink.attendant.6 · Accepted Answer · 2015-12-24 19:05:19Z

0

i just place one image in " d drive-->Data-->IMG". The image name is x.jpg:

And on c# code type

ImageBrush myBrush = new ImageBrush();

myBrush.ImageSource = new BitmapImage(new Uri(BaseUriHelper.GetBaseUri(this), "D:\\Data\\IMG\\x.jpg"));

(please put double slash in between path)

this.Background = myBrush;

finally i got the background.. enter image description here

edited Dec 24, 2015 at 19:05

rink.attendant.6

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answered Dec 24, 2015 at 18:56

jigarsinh thakor

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Comments

Jeetendra negi · Accepted Answer · 2016-03-16 14:22:43Z

0

Uri resourceUri = new Uri(@"/cCleaner;component/Images/cleanerblack.png", UriKind.Relative);
            StreamResourceInfo streamInfo = Application.GetResourceStream(resourceUri);
            BitmapFrame temp = BitmapFrame.Create(streamInfo.Stream);
            var brush = new ImageBrush();
            brush.ImageSource = temp;
            frame8.Background = brush;

answered Mar 16, 2016 at 14:22

Jeetendra negi

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Comments

Samidjo · Accepted Answer · 2016-07-04 11:29:17Z

0

I have been trying all the answers here with no success. Here is the simplest way to do it with ms-appx

        ImageBrush myBrush = new ImageBrush();
        Image image = new Image();
        image.Source = new BitmapImage(new Uri(@"ms-appx:///Assets/background.jpg"));
        myBrush.ImageSource = image.Source;
        TheGrid.Background = myBrush;

Assets folder is in the first level of my project, so make sure to change the path as convenient.

answered Jul 4, 2016 at 11:29

Samidjo

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Rodrigo Alvarez · Accepted Answer · 2019-03-07 20:08:37Z

0

img.UriSource = new Uri("pack://application:,,,/images/" + fileName, UriKind.Absolute);

answered Mar 7, 2019 at 20:08

Rodrigo Alvarez

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