Sign in to follow this  

[.net] Loading image from embedded resource

This topic is 2815 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Need help with C# source code for loading image from embedded resource. I´ve spent too much time today googling/trying to get this to work but every guide is different and seems outdated / fails to work in Visual Studio 2008 Pro which I´m using. I need working code for loading a jpg file from the embedded resource in a program and assign to background of a button. This is the closests attemp so far: using System.IO; using System.Reflection; Assembly _assembly; Stream _imageStream; try { _assembly = Assembly.GetExecutingAssembly(); _imageStream = _assembly.GetManifestResourceStream("Program.picture1.jpg"); } catch { MessageBox.Show("Error accessing resources!"); } // this is where I get the runtime error "value null is not valid for stream" button1.BackgroundImage = new Bitmap(_imageStream); Thanks in advance. Edit: *sighs*, the path in "GetManifestResourceStream" was incorrect.. the picture was in a Resource folder and therefore it should be "Program.Resource.picture1.jpg" .. at least one tutorial helped -_-. Problem solved.

Share this post


Link to post
Share on other sites
System.Reflection.Assembly thisExe;
thisExe = System.Reflection.Assembly.GetExecutingAssembly()
System.IO.Stream file thisExe.GetManifestResourceStream("Assembly_Name.Image_Name.jpg");
this.button1.Image = Image.FromStream(file);



Tada. Just need to make sure you know what the Assemble_Name is and wht the pic name is. If you are having trouble. Do this.

System.Reflection.Assembly thisExe; 
thisExe = System.Reflection.Assembly.GetExecutingAssembly();
string [] resources = thisExe.GetManifestResourceNames();
string list = "";

// Build the string of resources.
foreach (string resource in resources)
list += resource + "\r\n";


That will get you the names of all of your resources.

theTroll

Share this post


Link to post
Share on other sites
If it's a local resource, why not access it directly?

button1.BackgroundImage = Properties.Resources.myImageName;




Or if the image is always the same, just set it from the designer.

[Edited by - SirViver on March 31, 2010 8:32:29 AM]

Share this post


Link to post
Share on other sites
Thanks for the answers, I already solved it shortly after posting .. should have posted the thread much earlier that day :P.

Since I´m new into GUI stuff in C# I find it not to easy to figure out stuff like that.. and the lack of decent tutorials on the net doesnt make it better. Its a good thing gamedev.net exists and that you guys have patience :)

Thanks for the tips, I´ll check it out later on.

Share this post


Link to post
Share on other sites
Quote:
Original post by SirViver
If it's a local resource, why not access it directly?

*** Source Snippet Removed ***

Or if the image is always the same, just set it from the designer.


This did work after some testing, there was no definition for the pictures until I added them from the right place. :S

Pojectname -> Properties -> Resources.resx (rightclick -> Designer) and Add resource.

Just made this clear for others who might encounter the same problem.

Adding resources throu rightclick -> Add Existing Item on the Resource folder in the Project view does not add definition.

EDIT:

Encountered new obstacles, a function returns a string with a picture name from the project resources and I need it to be used in Properties.Resources."var" so I can dynamically get the needed resource. Is there a way to do this?.

string res = GetButtonPictureName();
gameButtons[i].BackgroundImage = Properties.Resources.res // does not work ofc since res is not an identified resource.

[Edited by - Nali on April 1, 2010 10:55:58 AM]

Share this post


Link to post
Share on other sites
When adding an image resource to the resource editor (the one you get when you double click on a resx file in your project) make sure to select images in the resource type dropdown (the first one on the top left by default). You can just drag and drop an image file from explorer or from your project onto the main page of the resource editor. Once it is in the resource editor you should be able to refer to it by its name as SirViver suggested. As long as it is actually a image resource the type of its static member should be Bitmap which is a subclass of image and can be assigned directly to a button's image or whatever.

The ResourceManager.GetObject(name) method will allow you to retrieve a resource given its string name. If it is an image resource you should simply be able to cast its return value to Bitmap or Image.

[code]
button1.BackgroundImage = (Image)Properties.Resources.ResourceManager.GetObject("myImageName");
[code]

Share this post


Link to post
Share on other sites

This topic is 2815 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this