Question

Is there a way to get all assemblies that depend on a given assembly?

Pseudo:

Assembly a = GetAssembly();
var dependants = a.GetDependants();

Answer 1

If you wish to find the dependent assemblies from the current application domain, you could use something like the GetDependentAssemblies function defined below:

private IEnumerable<Assembly> GetDependentAssemblies(Assembly analyzedAssembly)
{
    return AppDomain.CurrentDomain.GetAssemblies()
        .Where(a => GetNamesOfAssembliesReferencedBy(a)
                            .Contains(analyzedAssembly.FullName));
}

public IEnumerable<string> GetNamesOfAssembliesReferencedBy(Assembly assembly)
{
    return assembly.GetReferencedAssemblies()
        .Select(assemblyName => assemblyName.FullName);
}

The analyzedAssembly parameter represents the assembly for which you want to find all the dependents.