How to display pictures in the project resource?

I have a set of small icons and hope to display them in my application when certain condition occurs, f开发者_如何学编程or example on sunny day, I display the sunny icon.

I can add the jpg files in the picture, and they seem to be uploaded to phone when I deploy the app. However, I don't know how to access these jpgs in my program.

Could someone help? Thanks a lot!

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Check this post about content and resources: http://www.windowsphonegeek.com/tips/wp7-working-with-images-content-vs-resource-build-action

To summarize: You should mark your images with a Build Action of Content or Resource, preferably Content. Now you can reference the Content from your Xaml or in code.

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If the Build Action for your image resources is set to Content, then you just specify the Source property for the Image control to the relative path to your images:

this._image.Source = new BitmapImage(
    new Uri("/Images/myImage.jpg", UriKind.Relative"));

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You can display pictures using the Image element:

<Image Source="/MyImage.png" Visibility="Visible"/>

If you want to switch images according to conditions then you can create multiple images and change each of their Visibility states - or (more preferable) you can create a single image element and change its Source.

Quite how you do this depends on whether you are using databinding or working directly with the UIElements in code behind.