What iis wrong with this imagesource in WPF? - wpf

I try to set an imagesource in code behind in WPF. For some reason it doesn't work - am I missing something?
ImageBrush imgBrushBackground = new ImageBrush();
imgBrushBackground.ImageSource = new BitmapImage(new Uri(#"\Assets\img\bg_spaceFlare.jpg"));
The link to the file is correct (I checked it by dragging in an image from Solution Explorer).
The error message is this: System.UriFormatException: 'Invalid URI: The format of the URI could not be determined.'
Thanks!
Petter


You can fix this by passing UriKind.Relative to Uri's constructor:
new BitmapImage(new Uri(#"\Assets\img\bg_spaceFlare.jpg", UriKind.Relative));

Related

URI path in WPF window background image

I'm trying to assign a background to my WPF window.
I have a .jpg in bin\debug\StoredData\wallpaper.jpg
(I want to obtain the .jpg from there).
I came to putting this code inside the .cs file (newly created file):
InitializeComponent();
ImageBrush myBrush = new ImageBrush();
myBrush.ImageSource =
new BitmapImage(new Uri("\\StoredData\\login_wallpaper.jpg", UriKind.Absolute));
this.Background = myBrush;
But I get a "Invalid URI: The format of the URI could not be determined" message.
What should I change?

\StoredData\login_wallpaper.jpg is a relative URI. You can either change the UriKind to UriKind.Relative, or enter an absolute URI, depending on what behavior you want.

How to change the background of a grid to an image in WP7 silverlight?

I'm trying to set a background for a grid control in WP7 silverlight, I need to do that programatically, not in the desighn.
I tried something like:
ContentPanel.Background = new BitmapImage(new Uri("Images\Backgrounds\with box\13.jpg", UriKind.Relative));
But of course, I got an error, because on the right hand we should have the type SolidColorBrush.
is there a way to do that?
Thanks..

I would firstly recommend that you use a Canvas instead of a Grid. You can do this by deleting the Grid and inserting a Canvas through the Toolbox -> Drag and Drop.
Then, you can use the code as simple as:
ImageBrush imageBrush = new ImageBrush();
imageBrush.ImageSource = new BitmapImage(new Uri("url", UriKind.Relative));
CanvasName.Background = imageBrush;
That will change the background to whatever you want.
Hope that helps.

Binding Image Control to URI in WP7

I ham developing an application for WP7 and i am having a strange problem with Image control, it does not show the image it is binded to.
I have tryed it in so many ways but event this way (the most naive one) does not work:
In the xaml I have an Image control named img and this is what I have done in the code behind
public MainPage()
{
InitializeComponent();
img.Source = new BitmapImage(new Uri (#"http://img11.imageshack.us/img11/5365/photovnj.jpg", UriKind.Absolute));
}
</code>
It seems to simple not to work...
Please help!

This code works fine for me presuming you have img declared as an Image in your xaml.
If not, I'd suggest you have a connection problem from your app running in the emulator or device to the internet.
This is the code I wrote.
image1.Source = new BitmapImage(new Uri(#"http://img11.imageshack.us/img11/5365/photovnj.jpg", UriKind.Absolute));

How can I set an Image to an Image control in WPF?

I'm trying to do this:
imgUser.Source = new Uri(user.Photo);
But I'm getting an error that I cannot convert a URI to an ImageSource.

BitmapImage is an ImageSource and can be created from a Uri:
imgUser.Source = new BitmapImage(new Uri(user.Photo));

How to set uri for local image in silverlight app?

In SL class library MyLib, I have a image say my.png. Then I want to use it in code behind I tried following way:
StreamResourceInfo resourceStream = Application.GetResourceStream(new Uri("/MyLib;component/my.png", UriKind.Relative));
BitmapImage image = new BitmapImage();
image.SetSource(resourceStream.Stream);
this.MyIcon.Source = image;
But it's not woking. I think it's the Uri not set correctly. Help please.

This works:-
BitmapImage image = new BitmapImage(new Uri("/MyLib;component/my.png", UriKind.Relative));
MyIcon.Source = image;
I can't see why you would want to use a Stream here. Having said that your Stream code should work. The build action on the png should be "Resource" and "MyLib" in your Uri should be the Assembly name of the library as found on the "Silverlight" tab of the project properties.

Do you have your image marked as "Resource" in the properties window, or "Content"?

You could always set a style as a resource in your application and then call it like:
Application.Current.Resources["myCoolStyle"] and apply that to the image.

Resources