Windows Presentation Foundation WPF offers special support for configuring, identifying, and using these types of data files, which are called application data files. This support revolves around a specific set of application data file types, including:. Content Files : Standalone data files that have an explicit association with an executable WPF assembly. One important distinction to make between these three types of files is that resource files and content files are known at build time; an assembly has explicit knowledge of them.
Pack URIs in WPF
For site of origin files, however, an assembly may have no knowledge of them at all, or implicit knowledge through a pack uniform resource identifier URI reference; the case of the latter, there is no guarantee that the referenced site of origin file actually exists. If an application data file must always be available to an application, the only way to guarantee availability is to compile it into an application's main executable assembly or one of its referenced assemblies.
This type of application data file is known as a resource file. You want to simplify application distribution complexity by reducing the number of file dependencies. The resource files described in this section are different than the resource files described in XAML Resources and different than the embedded or linked resources described in Manage Application Resources.
In Visual Studio, you create a resource file by adding a file to a project and setting its Build Action to Resource. To load a resource file, you can call the GetResourceStream method of the Application class, passing a pack URI that identifies the desired resource file. GetResourceStream returns a StreamResourceInfo object, which exposes the resource file as a Stream and describes its content type. As an example, the following code shows how to use GetResourceStream to load a Page resource file and set it as the content of a Frame pageFrame :.
While calling GetResourceStream gives you access to the Streamyou need to perform the additional work of converting it to the type of the property that you'll be setting it with. Instead, you can let WPF take care of opening and converting the Stream by loading a resource file directly into the property of a type using code.
The following example shows how to load a Page directly into a Frame pageFrame using code. A special set of WPF application code files can be referenced using pack URIs, including windows, pages, flow documents, and resource dictionaries.4 start lead screw
For example, you can set the Application. StartupUri property with a pack URI that references the window or page that you would like to load when an application starts. When a project with Page items is compiled, the XAML items are converted to binary format and compiled into the associated assembly.
Consequently, these files can be used in the same way as typical resource files.Hey there! Thanks for dropping by Elke's Blog! Take a look around and grab the RSS feed to stay updated. See you around! It can be kinda hard to load an image from a file in source code, here are a few examples that work. BeginInit ; img.Conan guest
Absolute ; System. Assert img! EndInit. We can also use a stream. GetExecutingAssembly ; System. GetManifestResourceStream "animations.
Create imageStream ; image. Source. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Elke's Blog Development and Electronics Blog. Development Tutorial Uncategorized. Filed under: Development — 2 Comments.
EndInit ; We can also use a stream. Share this: Twitter Facebook. Like this: Like Loading Comments RSS feed. February 21, at pm. August 23, at pm. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.
Pack URIs in WPF
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Possible Duplicate: WPF image resources. I have some images in my VS C project that are declared as embedded resources. I'm accessing them in the. Learn more. Asked 9 years, 1 month ago. Active 4 years, 10 months ago. Viewed 8k times. Norbert Norbert 3, 6 6 gold badges 31 31 silver badges 55 55 bronze badges. Active Oldest Votes. Robbie Tapping Robbie Tapping 2, 1 1 gold badge 13 13 silver badges 16 16 bronze badges.
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The image is embedded as a resource in the project. By looking at examples I've come up with the below code. For some reason it doesn't work - the image does not show up. Path: The name of a resource file that is compiled into a referenced assembly. See the OPC for details. This will load a image called "Untitled.
You can also reduce this to one line. This is the code I used to set the Icon for my main window. It assumes the. Here is an example that sets the image path dynamically image located somewhere on disc rather than build as resource :.
First thought, you would think that the Icon property can only contain an image. But it can actually contain anything! I discovered this by accident when I programmatically tried to set the Image property directly to a string with the path to an image. The result was that it did not show the image, but the actual text of the path!
This leads to an alternative to not have to make an image for the icon, but use text with a symbol font instead to display a simple "icon". The following example uses the Wingdings font which contains a "floppydisk" symbol. This works like a dream! The following shows a floppydisk symbol as an icon on the menu item:. There's also a simpler way.Furthermore, URIs can be used to identify and load files from a variety of locations, including the following:.
To provide a consistent mechanism for identifying and loading these types of files from these locations, WPF leverages the extensibility of the pack URI scheme. This topic provides an overview of the scheme, covers how to construct pack URIs for a variety of scenarios, discusses absolute and relative URIs and URI resolution, before showing how to use pack URIs from both markup and code. The key elements of this model are packages and parts, where a package is a logical container for one or more logical parts.
The following figure illustrates this concept. The scheme that is specified by a URI is defined by its prefix; http, ftp, and file are well-known examples. The pack URI scheme uses "pack" as its scheme, and contains two components: authority and path. The following is the format for a pack URI. The authority specifies the type of package that a part is contained by, while the path specifies the location of a part within a package. Packages and parts are analogous to applications and files, where an application package can include one or more files partsincluding:.
The scope of each authority is shown in the following figure. See the OPC for details. The following sections explain how to construct pack URIs using these two authorities in conjunction with the appropriate paths for identifying resource, content, and site of origin files. Resource files are configured as MSBuild Resource items and are compiled into assemblies.
WPF supports the construction of pack URIs that can be used to identify resource files that are either compiled into the local assembly or compiled into an assembly that is referenced from the local assembly. The pack URI for a resource file that is compiled into the local assembly uses the following authority and path:. Path : The name of the resource file, including its path, relative to the local assembly project folder root. The following example shows the pack URI for a XAML resource file that is located in a subfolder of the local assembly's project folder.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I come from a mostly web and a little bit Windows Forms background. For a new project, we will be using WPF. The WPF application will need 10 - 20 small icons and images for illustrative purposes.
I am thinking about storing these in the assembly as embedded resources. Is that the right way to go? If you will use the image in multiple places, then it's worth loading the image data only once into memory and then sharing it between all Image elements. To do this, create a BitmapSource as a resource somewhere:. In my case, I found that I had to set the Image.
This causes the image to be carried within your compiled assembly. After spending many hours searching I found a very simple method, I found no example and so I share mine here which works with images.
From my experiences the pack string is not the issue, check your streams and especially if reading it the first time has set the pointer to the end of the file and you need to re-set it to zero before reading again. In code to load a resource in the executing assembly where my image Freq. If you're using Blendto make it extra easy and not have any trouble getting the correct path for the Source attribute, just drag and drop the image from the Project panel onto the designer.
Learn more. WPF image resources Ask Question. Asked 11 years, 4 months ago. Active 1 year, 8 months ago. Viewed k times. Peter Mortensen Active Oldest Votes. Drew Noakes Drew Noakes k gold badges silver badges bronze badges. Would it be possible to do this dynamically?GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project?
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Problem description: Embedded resources weren't compiled into executable. I added an image to a resx file Resource1.
Update Not only WPF projects, all kinds of projects in. NET Core 3. Using the repro project, I also don't see an image when running the application, but I do see a byte-array resource embedded:. I don't know what.Cara verifikasi whatsapp tanpa sms
Not only WPF projects, all kinds of projects in. The embedding process changed a lot in 3. What else have you found not to work? A repro sample: ResourceFiles. However, I think this issue is different from the wpf issue I mentioned in the top post because using resources in wpf xaml doesn't require a resx file. See this new repro: WpfTestNew. It works in the designer because it looks in the file system of the project. It may look like it works in Desktop Framework by default if you included the image itself in the project, but then you weren't referencing the resx.
As far as the second example is concerned, I don't know if Core WPF is globally including all image extensions under the Resource build action; Desktop Framework doesn't auto include files, but when you manually included the file it would automatically set the build action to Resource for image file extensions when you are in a WPF project.Flyff classic
If the resource globbing is inherited from base Core project behavior the build action may be wrong you can see it in VS when you select the file properties from the context menu of the solution explorer.
Can't test right now since I'm not at my VS machine. If its None then that explains why its not working.
In this case the fix is for WPF SDK to either turn off globbing of images and similar resources so you have to add them manually under the right build action like Desktop, ideally having the same defaults in the project system to get the same experience or replicate the default build actions of the Desktop Framework WPF project system in the automatically included files.
Automatically including files as None where Desktop project system has a different default is too confusing. As for the issue I mentioned in my original post, after changing build option of my images to Resourceit works as expected. As for the second issue Not only WPF projects, all kinds of projects in.
#1,107 – Accessing an Embedded Resource Using a Uri
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