可以，可以使用Assembly.LoadFile动态加载程序集

Assembly.LoadFile("c:\\somefolder\\Path\\To\\Code.dll");

然后，您需要使用Reflection来获取要调用的函数的方法信息，或者使用Dynamic关键字来调用它。

var externalDll = Assembly.LoadFile("c:\\somefolder\\Customer.dll");
var externalTypeByName = externalDll.GetType("CustomerClassNamespace.Customer");

// If you don't know the full type name, use linq
var externalType = externalDll.ExportedTypes.FirstOrDefault(x => x.Name == "Customer");

//if the method is not static create an instance.
//using dynamic 
dynamic dynamicInstance = Activator.CreateInstance(externalType);
var dynamicResult = dynamicInstance.show();

// or using reflection
var reflectionInstance = Activator.CreateInstance(externalType);
var methodInfo = theType.GetMethod("show");
var result = methodInfo.Invoke(reflectionInstance, null);

// Again you could also use LINQ to get the method
var methodLINQ = externalType.GetMethods().FirstOrDefault(x => x.Name == "show");
var resultLINQ = methodLINQ.Invoke(reflectionInstance, null);