How to change\set background image of a button in C# WPF code?

Question

I'm trying to change background image of my button to some other image and I encountered some errors. This is the code I have on my xaml:

    <Button x:Name="Button1" Width="200" Height="200" Content="Button1" Margin="0,0,0,400">
        <Button.Background>
            <ImageBrush **ImageSource ="Images/AERO.png"**  ></ImageBrush>
        </Button.Background>
    </Button>

and my cs:

    private void Button1_Click_1(object sender, RoutedEventArgs e)
    {
        var brush = new ImageBrush();
        brush.ImageSource = new BitmapImage(new Uri("Images/AERO.png"));
        Button1.Background = brush;
    }

The error I have on my xaml is " The file 'Images\logo.png' is not part of the project or its 'Build Action' property is not set to 'Resource'. Can anyone help me explain, thanks

Can you confirm whether or not the file "Image\logo.png" is incuded in your project in Visual Studio. If it is, can you also confirm on its Properties tab that its Build Action is set to Resource? — Kohanz
– Kohanz, Commented Apr 9, 2013 at 2:36
How do i set the Build Action properties? I cant seem to find it. — Jaz
– Jaz, Commented Apr 9, 2013 at 2:41
Which file? if it's the picture file, its already set to resource — Jaz
– Jaz, Commented Apr 9, 2013 at 2:49
Some confusing aspects: your code says "aero.png", but the error says "logo.png". Also, what is with the "**" in your XAML. I assume that is for emphasis, since it won't compile. — Kohanz
– Kohanz, Commented Apr 9, 2013 at 3:01

Walt Ritscher · Accepted Answer · 2013-04-09 05:52:35Z

16

In the build action, you can mark the image file as content or as resource. The syntax to use the image in an ImageBrush is different depending on which one you choose.

Here is a image file marked as content.

Image, marked as content

To set the button background to this image use the following code.

 var brush = new ImageBrush();
 brush.ImageSource = new BitmapImage(new Uri("Images/ContentImage.png",UriKind.Relative));
 button1.Background = brush;

Here is an image file marked as resource.

Image, marked as resource

To set the button background to the resource image use the following code.

  Uri resourceUri = new Uri("Images/ResourceImage.png", UriKind.Relative);
  StreamResourceInfo streamInfo = Application.GetResourceStream(resourceUri);

  BitmapFrame temp = BitmapFrame.Create(streamInfo.Stream);
  var brush = new ImageBrush();
  brush.ImageSource = temp;

  button1.Background = brush;

answered Apr 9, 2013 at 5:52

Walt Ritscher

7,0671 gold badge32 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Jaz Over a year ago

i only got one question. The type or namespace name "StreamResourceInfo" could not be found.( are you missing a using directive or an assembly reference)

Walt Ritscher Over a year ago

That's a common C# compiler error. You need to add a using System.Windows.Resources; to the top of your code window.

Evren Gunay · Accepted Answer · 2013-08-08 11:53:45Z

I give a code snippet below, assing the style mentioned in code snippet to a button or to a toggle button, then you shall ve the changed background controlled totally by XAML...no other coding needed. I am not givin all the code just try to understand the logic behind ;)

<Style x:Key="KeyStopButtonStyle" TargetType="{x:Type Button}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <Border TextBlock.Foreground="{TemplateBinding Foreground}"
                                  x:Name="Border"
                                  CornerRadius="1"
                                  BorderThickness="1">
                    <Border.Background>                            
                        <ImageBrush ImageSource= "..\Images\ButtonImages\StopButton.png"  Stretch="Uniform"/>
                    </Border.Background>                        
                    <Border.Effect>                            
                        <DropShadowEffect/>                                
                    </Border.Effect>
                </Border>
                <ControlTemplate.Triggers>                        
                    <Trigger Property="IsPressed" Value="true">
                        <Setter TargetName="Border" Property="Border.Effect" Value="{x:Null}"/>                                                            
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style x:Key="KeyPlayPauseButtonStyle" TargetType="{x:Type ToggleButton}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ToggleButton">
                <Border TextBlock.Foreground="{TemplateBinding Foreground}"
                                  x:Name="Border"
                                  CornerRadius="1"
                                  BorderThickness="1">
                    <Border.Background>
                        <ImageBrush ImageSource= "..\Images\ButtonImages\PlayButton.png"  Stretch="Uniform"/>
                    </Border.Background>
                    <Border.Effect>
                        <DropShadowEffect/>
                    </Border.Effect>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="true">
                        <Setter TargetName="Border" Property="Border.Background">
                            <Setter.Value>
                                <ImageBrush ImageSource= "..\Images\ButtonImages\PauseButton.png" Stretch="Uniform"/>
                            </Setter.Value>
                        </Setter>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Kohanz · Accepted Answer · 2013-04-09 03:01:01Z

1

If it is not included, include the file "Image\Logo.png" in the project. Then set it's build action to "Resource" by visiting the properties tab for that file (right-click).

Setting action to build resource

Also, I'm not sure what you're trying to do in the Click handler of the button. You are already setting the background image in the XAML. Unless you are setting it to another image in the Click handler, that code is not needed.

edited Apr 9, 2013 at 3:01

answered Apr 9, 2013 at 2:47

Kohanz

1,5722 gold badges18 silver badges37 bronze badges

1 Comment

Jaz Over a year ago

Yea, its under resource already.. but now there is no error, but i can't see the button anymore on the main window.

Collectives™ on Stack Overflow

How to change\set background image of a button in C# WPF code?

3 Answers 3

2 Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related