如何将嵌入式资源作为字节数组读取而不将其写入磁盘？

Question

在我的应用程序中，我使用 CodeDom.Compiler 从 source.cs 文件编译另一个程序，并在编译时使用以下命令嵌入一些资源（exe 和 dll 文件）：

 // .... rest of code

if (provider.Supports(GeneratorSupport.Resources))
{
    cp.EmbeddedResources.Add("MyFile.exe");
}
if (provider.Supports(GeneratorSupport.Resources))
{
    cp.EmbeddedResources.Add("New.dll");
}
// ....rest of code 

在编译的文件中，我需要以字节数组的形式读取嵌入资源。现在，我通过使用下面的函数将资源提取到磁盘并使用

File.ReadAllBytes("extractedfile.exe");
File.ReadAllBytes("extracteddll.dll");

我使用此函数将两个文件提取到磁盘后执行此操作：

public static void ExtractSaveResource(String filename, String location)
{
    //  Assembly assembly = Assembly.GetExecutingAssembly();
    System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
    // Stream stream = assembly.GetManifestResourceStream("Installer.Properties.mydll.dll"); // or whatever 
    // string my_namespace = a.GetName().Name.ToString();
    Stream resFilestream = a.GetManifestResourceStream(filename);
    if (resFilestream != null)
    {
        BinaryReader br = new BinaryReader(resFilestream);
        FileStream fs = new FileStream(location, FileMode.Create); // say 
        BinaryWriter bw = new BinaryWriter(fs);
        byte[] ba = new byte[resFilestream.Length];
        resFilestream.Read(ba, 0, ba.Length);
        bw.Write(ba);
        br.Close();
        bw.Close();
        resFilestream.Close();
    }
    // this.Close(); 
}

我怎样才能做同样的事情（以字节数组的形式获取嵌入式资源）但不向硬盘写入任何内容？

Answer 1

您实际上已经将流读取到字节数组，为什么不就此停止？

public static byte[] ExtractResource(String filename)
{
    System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
    using (Stream resFilestream = a.GetManifestResourceStream(filename))
    {
        if (resFilestream == null) return null;
        byte[] ba = new byte[resFilestream.Length];
        resFilestream.Read(ba, 0, ba.Length);
        return ba;
    }
}

编辑：请参阅评论以获得更好的阅读模式。

Answer 2

使用

MemoryStream

的简单替代方案：

var ms = new MemoryStream();
await resFilestream.CopyToAsync(ms);
var bytes = ms.ToArray();

Answer 3

请记住，嵌入式资源文件名 = 程序集名称.文件名

string fileName = "test.pdf";
System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
string fileName = a.GetName().Name + "." + "test.pdf";

using (Stream resFilestream = a.GetManifestResourceStream(fileName))
{
    if (resFilestream == null) return null;
    byte[] ba = new byte[resFilestream.Length];
    resFilestream.Read(ba, 0, ba.Length);
    var byteArray = ba;
}

Answer 4

如果您正在阅读嵌入资源，这里有一个简单的方法。

string resourcePath = "pack://application:,,,/resource/location/S_2/{0}";
        StreamResourceInfo resInfo = Application.GetResourceStream(new Uri(resourcePath));

        if (resInfo == null)
        {
            throw new Exception("Resource not found: " + resourcePath);
        }

        var ms = new System.IO.MemoryStream();
        await resInfo.Stream.CopyToAsync(ms);
        byte[] bytes = ms.ToArray();

Answer 5

也许使用嵌入式资源更好。适用于net框架，net6，net7，net8，...

public static byte[] ReadStream(string name)
{
    // Determine path
    var assembly = Assembly.GetExecutingAssembly();
    var resourcePath = name;
    // Format: "{Namespace}.{Folder}.{filename}.{Extension}"
    resourcePath = assembly.GetManifestResourceNames()
        .Single(str => str.EndsWith(name));

    using var stream = assembly.GetManifestResourceStream(resourcePath);
    var ba = new byte[stream.Length];
    stream.Read(ba, 0, ba.Length);
    return ba;
}

Answer 6

File.WriteAllBytes(@"C:\Users\admin\Desktop\MyFile.exe", Resources.BinFile); // binary file
File.WriteAllText(@"C:\Users\admin\Desktop\text.txt", Resources.TextFile); // text file