CODEWITHSUNDEEP
c#arrays
Raskaroth
Raskaroth

Reputation: 659

c# read byte array from resource

I've been trying to figure out how to read a byte array from one of my resource files, I have tried the most popular hits on Google without clear success.

I have a file stored in the resource collection of my program, I'd like to read this file as a byte array

I'm currently just reading the file from the root directory of my program with the following code:

FileStream fs = new FileStream(Path, FileMode.Open);
BinaryReader br = new BinaryReader(fs);
byte[] bin = br.ReadBytes(Convert.ToInt32(fs.Length));
fs.Close();
br.Close();

However I want to store this file as a resource in my application, so that I don't have to ship an extra file with my program.

This file holds encrypted data that part of my program uses.

Any help or pointers would be greatly appreciated!

Upvotes: 18

Views: 33149

Answers (6)

lava
lava

Reputation: 7373

byte[] capacity = Properties.Resources.excel;

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Confusion: enter image description here

here we reading txt resource file .so it not return byte[] but it return string (file content).

Upvotes: 1

Darin Dimitrov
Darin Dimitrov

Reputation: 1038790

Assuming you are talking about files that are embedded as resources in your assembly:

var assembly = System.Reflection.Assembly.GetExecutingAssembly();
using (var stream = assembly.GetManifestResourceStream("SomeNamespace.somefile.png"))
{
    byte[] buffer = new byte[stream.Length];
    stream.Read(buffer, 0, buffer.Length);
    // TODO: use the buffer that was read
}

Upvotes: 27

Michael Mittermair
Michael Mittermair

Reputation: 459

var rm = new ResourceManager("RessourceFile", typeof(ClassXY).Assembly);
return Encoding.UTF8.GetBytes(rm.GetString("key"));

Upvotes: 0

Panos
Panos

Reputation: 991

You can add resources to your application by going in the properties of the project, "Resources" tab (create one if needed), Add Resource (existing file). When your file is added, you can set its FileType (in its properties) to Binary.

Documentation

After that, you can access to your file as a byte[] easily:

var myByteArray = Properties.Resources.MyFile;

Upvotes: 22

ladenedge
ladenedge

Reputation: 13419

Here's a little class we're using for this purpose:

static class EmbeddedResource
{
    /// <summary>
    /// Extracts an embedded file out of a given assembly.
    /// </summary>
    /// <param name="assemblyName">The namespace of your assembly.</param>
    /// <param name="fileName">The name of the file to extract.</param>
    /// <returns>A stream containing the file data.</returns>
    public static Stream Open(string assemblyName, string fileName)
    {
        var asm = Assembly.Load(assemblyName);
        var stream = asm.GetManifestResourceStream(assemblyName + "." + fileName);

        if (stream == null)
            throw new ConfigurationErrorsException(String.Format(
                    Strings.MissingResourceErrorFormat, fileName, assemblyName));

        return stream;
    }
}

Usage is pretty straightforward:

using (var stream = EmbeddedResource.Open("Assembly.Name", "ResourceName"))
    // do stuff

Upvotes: 0

Anders Gustafsson
Anders Gustafsson

Reputation: 15971

maybe you can try using StreamResourceInfo. Here is a link to a Silverlight example, but if I am not mistaken you should be able to apply the same principles in any .NET application:

http://msdn.microsoft.com/en-us/library/system.windows.resources.streamresourceinfo(v=VS.95).aspx

Regards,
Anders @ Cureos

Upvotes: 0

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