C#•10mo ago

How to get assembly?

I'm trying to get assembly using this: var test = AppDomain.CurrentDomain.GetAssemblies(); I don't understand why but I don't see my assembly in test but my project has reference to this assembly

14 Replies

Hazel 🌊💃•10mo ago

Are you saying to have an assembly A which is referenced by the running project B but A isn't in test? Assemblies aren't loaded into the domain until they're needed. You can test this by using a data type in your Program.cs from A in B, then test should contain A.

V0FBU1VM•10mo ago

@ivefifthsence There is an extension on Assembly called GetReferencedAssemblies()

var references = Assembly.GetExecutingAssembly().GetReferencedAssemblies();

var references = Assembly.GetExecutingAssembly().GetReferencedAssemblies();

Mayor McCheese•10mo ago

What are you trying to actually do?

V0FBU1VM•10mo ago

Remember, assemblies only get loaded when they are used.

SWEETPONYOP•10mo ago

all I need is pass a name of assembly and then try to find all needed types

var assemblyNames = { "Operational.ReadModel.Commands" };
var types = InitPossibleCommandsTypes(assemblyNames);

var assemblyNames = { "Operational.ReadModel.Commands" };
var types = InitPossibleCommandsTypes(assemblyNames);

public Dictionary<Type, Type> InitPossibleCommandsTypes(string[] assemblyNames)
    {
        dictionaryTypes = new Dictionary<Type, Type>();
        foreach(var assembly in AppDomain.CurrentDomain.GetAssemblies().Where(a=>assemblyNames.Contains(a.GetName().Name)))
        {
            var commandTypes = assembly.GetTypes().Where(t => t.BaseType?.IsGenericType == true
                  && t.BaseType?.GetGenericTypeDefinition()
                      .IsAssignableTo(typeof(ResourceManagerPureCommand<>)) == true);
            foreach(var commandType in commandTypes)
            {
                var method = commandType.GetMethod("ExecuteAsync");
                if(method != null)
                {
                    dictionaryTypes.Add(commandType, method.GetParameters().FirstOrDefault()!.ParameterType);
                }
            }
        }
        return dictionaryTypes;
    }

public Dictionary<Type, Type> InitPossibleCommandsTypes(string[] assemblyNames)
    {
        dictionaryTypes = new Dictionary<Type, Type>();
        foreach(var assembly in AppDomain.CurrentDomain.GetAssemblies().Where(a=>assemblyNames.Contains(a.GetName().Name)))
        {
            var commandTypes = assembly.GetTypes().Where(t => t.BaseType?.IsGenericType == true
                  && t.BaseType?.GetGenericTypeDefinition()
                      .IsAssignableTo(typeof(ResourceManagerPureCommand<>)) == true);
            foreach(var commandType in commandTypes)
            {
                var method = commandType.GetMethod("ExecuteAsync");
                if(method != null)
                {
                    dictionaryTypes.Add(commandType, method.GetParameters().FirstOrDefault()!.ParameterType);
                }
            }
        }
        return dictionaryTypes;
    }

V0FBU1VM•10mo ago

Are you able to find any assemblies?

SWEETPONYOP•10mo ago

I don't understand why but I can find ResourceManager.Commands but not Operational.ReadModel.Commands both were referenced in csproj

V0FBU1VM•10mo ago

Are you using anything from Operational.ReadModel.Commands in your code? It can be anything, just a piece of code.

SWEETPONYOP•10mo ago

hm I understand

V0FBU1VM•10mo ago

Just by giving a project a reference, it doesn't mean it will get loaded. It will only load if, you are using it.

SWEETPONYOP•10mo ago

yes I see, thanks I will use foreach(var assembly in assemblyNames.Select(Assembly.Load)) instead why do you think about it?

V0FBU1VM•10mo ago

I get the idea of what you are trying to do. You are technically using code from Operational.ReadModel.Commands but not directly and that's why the assembly is not getting loaded.

SWEETPONYOP•10mo ago

yes

V0FBU1VM•10mo ago

You can maybe improve the code, by only loading your own assemblies.

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How to get assembly?