下面我直接上代码,在ASP.Net Core中获取所有的第三方依赖方法如下:

/// <summary>
        /// 获取依赖的Assembly  https://lebang2020.cn/details/210331qx5mdsho.html 
        /// </summary>
        /// <param name="assemblyName"></param>
        public IList<Assembly> GetDependency(AssemblyName assemblyName)
        {
            IList<Assembly> list = new List<Assembly>();
            AssemblyLoadContext defaultLoadContext = AssemblyLoadContext.GetLoadContext(Assembly.GetExecutingAssembly()) ?? AssemblyLoadContext.Default;
            var assembly = defaultLoadContext.LoadFromAssemblyName(assemblyName);

            var relatedAssembliesAttrs = assembly.GetCustomAttributes<RelatedAssemblyAttribute>();
            foreach (var attr in relatedAssembliesAttrs)
            {
                var lib = defaultLoadContext.LoadFromAssemblyName(attr.AssemblyFileName);
                list.Add(lib);

            }

            return list;

        }

网上搜索到也可以使用  var deps = DependencyContext.Default;
不过还需要自己按程序集的名称再过滤deps一下。欢迎指正。