I've added an image logo.bmp into my project, but I can't figure out how to assign it to an Image type. I've started by creating the variabale:
public static Image logo { get; set; }
but I can't figure out how to assign my image to it. This is what I have right now:
logo = Image.FromFile("logo.bmp");
But that assumes the image is in the directory of the .exe. What is the correct way to do this?
You can use System.Reflection.Assembly.GetManifestResourceStream to load a resource from a loaded assembly.
First you must make sure that the file in your Visual Studio project is actually being embedded in the assembly itself. Right click on the file and select Properties, then make sure that Build Action is Embedded Resource.
Now you can call Assembly.GetManifestResourceStream from code in that same assembly and specify the resource name with a fully qualified namespace, such as "YourSolution.YourProject.Images.logo.bmp".
The Image class you are using has a method to load from a stream called Image.FromStream().
So here is a code snippet of what you might do:
Image image;
var stream = Asssembly.GetExecutingAssembly().GetManifestResourceStream("MySolution.MyProject.Images.logo.bmp");
image = Image.FromStream(stream);
Just keep in mind that you may need to dispose the stream separately from the image when loaded this way.
The Assembly class is part of the System.Reflection namespace. An alternative for using Assembly.GetExecutingAssembly() is
typeof(YourClassName).Assembly.GetManifestResourceStream("path.to.your.resource")
This way you can use a type to determine from which assembly you would like to access a resource.
Related
I've added a test.zip to a C# project by creating a Resource1.resx and dragged to the resx tab. It is now visible in the Solution Explorer as a child of Resources.
When the program runs, I'd like to move it from the .exe to a location on the computer like My Documents.
I've a feeling I need to convert the resource to a memory stream before I can write it to file but I'm not sure how to access the file as resource or how to convert it.
I think the following extracts the resource object (then again, it doesn't error no matter what the first param is) but I'm not sure how to proceed:
var resource = new ResourceManager("test", Assembly.GetExecutingAssembly());
Since you activate the resources you have already a ResourceManager.Just use GetObject method,get the bytes of your file and write the them to a new file with File.WriteAllBytes:
var bytes = Properties.Resources.ResourceManager.GetObject("resourceName") as byte[];
File.WriteAllBytes("newFile.zip", bytes);
You should use Assembly.GetManifestResourceStream.
using (Stream x = Assembly.GetExecutingAssembly().GetManifestResourceStream("test"))
{
...
}
Reference to MSDN.
I have a game application in Visual Studio 2012 C#. I have all the .png images I am using in the Resources file of the project.
Have you any idea why I can access all the files but one by using Properties.Resources?
I checked the full filePath and it's set to the resources folder. And it's added in the program as I did Add -> Existing Item and added the image.
It looks just like the other images. I have no idea why it's not loading. I need this since I need to send a .exe by email to my lecturer and without this image the project is nothing!
I added this in the resource file
internal static System.Drawing.Bitmap grid_fw {
get
{
object obj = ResourceManager.GetObject("grid.fw", resourceCulture);
return ((System.Drawing.Bitmap)(obj));
}
}
and although now grid is available, it is returning null :/
Found from: Properties.Resources the icon name does not appear in the intellisense
You also need to add the icon to the Resources.resx file. Open it in
Visual Studio and drag your icon into the Icons menu of the resx and
it will become available.
Also, see Adding and Editing Resources (Visual C#)
You can get a reference to the image the following way:
Image myImage = Resources.yourImage;
If you want to make a copy of the image, you'll need to do the following:
Bitmap bmp = new Bitmap(Resources.yourImage);
Don't forget to dispose of bmp when you're done with it. If you don't know the name of the resource image at compile-time, you can use a resource manager:
ResourceManager rm = Resources.ResourceManager;
Bitmap yourImage = (Bitmap)rm.GetObject("yourImage");
The benefit of the ResourceManager is that you can use it where Resources.myImage would normally be out of scope, or where you want to dynamically access resources. Additionally, this works for sounds, config files, etc.
By other than using AddResource button of Visual Studio, of course.
I submit a form, and an image file with it. In my controller action, I get the HttpPostedFileBase object, and its file name by using Path.GetFileName(). If I just use SaveAs() function to save the image file in my application, I cannot access it later for testing, because it gives me the "Not allowed to load local resource" error.
So I want to add the image to a .resx file and retrieve it later using ResourceManager or something. My question is, how can I add the image I have in the controller action into my .resx file?
I should also ask if this is the good approach for the purpose of adding and retrieving image files in my application.
EDITED:
Ok, using .resx to store images is not a good idea. My original problem was that I could save the image file, but when I tried to show it in my view, it gives "Not allowed to load local resource" error.
Here's the controller code:
public ActionResult UrunEkle(Urun urun, HttpPostedFileBase image)
{
Directory.CreateDirectory(Server.MapPath("~/App_Data/Images"));
var path = Path.Combine(Server.MapPath("~/App_Data/Images"), fileName);
image.SaveAs(path);
urun.ArtUrl = path;
// other stuff....
}
And in my view, I try to retrieve the image like this:
<img alt="#urun.name" src="#Url.Content(urun.ArtUrl)" />
But using Google Chrome, I get this "Not allowed to load local resource". How can I avoid this?
Forget trying to add the image to a RESX file; it's not designed to be modified at runtime.
Please post some code. The most likely thing is that the URL that you're serving up to use the image later is incorrect. Probably because you're returning the path of the file on the server, not a URL to the image within the context of the web site.
The error message from Chrome is telling you that it's trying to load a resource from the local file system on the client.
Url.Content converts a relative virtual path into an absolute virtual path and needs a URL starting with ~. You're currently passing in the absolute physical path to the image file and Url.Content is returning it, unchanged. You need the relative virtual path (~/App_Data/Images/Untitled.png) in urun.ArtUrl. This is the value that you passed in to Server.MapPath.
C# - Loading image from file resource in different assembly
I have a PNG image file which is stored in a project called SomeProject and displayed various times using XAML in that same project. In a different assembly, I now wish to access that same image. Previously I was simply specifying a relative path to the actual file which worked fine. However, when I build a release installer, the image files are packed into the SomeProject.DLL.
Is there any easy way I can access the PNG file from another assembly without simply resorting to copying the file locally to the second project? I though it might be possible using 'pack://' but I'm not having much luck.
// SomeOtherProject.SomeClass.cs ...
Image logo = new Image();
BitmapImage logoSource = new BitmapImage();
eChamSource.BeginInit();
// Following line works fine is Visual Studio, but obviously not after installation
// logoSource.UriSource = new Uri(#"..\SomeProject\Resources\Images\logo.png", UriKind.Relative);
logoSource.UriSource = new Uri("pack://application:,,,/SomeProject;component/Resources/Images/logo.png");
logoSource.EndInit();
logo.Width = 100; logo.Height = 100;
logo.Source = logoSource;
Any advice would be good.
If the images you wish to use as Content is in another assembly, you must copy them to the main projects directory.
You can use a Build event to do this:
Right click project that contains images -> Properties -> Buil Events -> edit post build to copy images to main project directory.
Then you have to use it as
pack://application:,,,/ContentFile.xaml
(Or)
If you need it in subfolder
pack://application:,,,/Subfolder/ContentFile.xaml
Have a look at this hfor more information http://msdn.microsoft.com/en-us/library/aa970069.aspx
Try to load your other assembly as followed:
Application.LoadComponent(new Uri(#"AnotherAssembly;;;component\AnotherResourceFilePath/logo.png", UriKind.Relative)));
LoadComponent function returns an object. It is up to you to cast it to the appropriate type.
I have an XML file included as part of my Silverlight 4.0 project that I'd like to access at runtime. I have the file saved in a directory named Resources with the Build Action set to "Content" and the Copy to Output Directory set to "Do not copy". If I decompress the XAP file, I see the XML file in the location I expect it to be, but I'm not sure how to reference it from code. I currently have the following:
Stream stream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(#"/AssemblyName;component/Resources/MyFile.xml")
Unfortunately, stream is null after running the code above. In addition to the path mentioned above, I've tried "/Resources/MyFile.xml", "/MyFile.xml" and "MyFile.xml", but they all experience the same behavior.
What is the correct way to access an XML file embedded as a resource in a Silverlight application?
A resource with build action "Content" just gets embedded into the xap file, with the same relative directory structure as the application. It does not get embedded as a resource in the assembly.
When set to build action "Content", you should be able to just load the file using something like (or whatever suits your needs):
XElement.Load(<relative directory>/<file>)
The method you're using currently (using a resource stream) is for embedded resources (which have their build action set to "Resource"). And for those, although I haven't tried yet if your method works, usually you'll get the resources using
Application.GetResourceStream
I have used the code snip below to get access to drawables. Not sure it's completely relevant, but hoping this will give you a hint one way or another ...
Resources res = getResources();
spec = tabHost.newTabSpec("groups").setIndicator("Groups", res.getDrawable(R.drawable.ic_tab_groups)).setContent(intent);
As was mentioned by Willem van Rumpt, "content" resources are not usual resources (they aren't stored in assembly). I've checked out this article and could't found at all that you could reference resource, marked as "content" from other assembly.
So, you have two options:
Define XML as embedded resource
Define XML as resource
In first case stream request looks like:
var a = Assembly.Load("AssemblyName");
var s = a.GetManifestResourceStream(#"DefaultNamespace.Resources.XMLFile2.xml");
In second case:
var a = Assembly.Load("AssemblyName");
var rm = new ResourceManager("AssemblyName.g", a);
using (var set = rm.GetResourceSet(CultureInfo.CurrentCulture, true, true))
{
var ums = (UnmanagedMemoryStream)set.GetObject(#"Resources/XMLFile1.xml", true);
}
Hope this helps.