How to Dynamically Invoke Methods with and without Parameters using Reflection in C#?

The following code example demonstrates how to dynamically call methods with and without parameters:

// Assembly1.dll
namespace TestAssembly
{
    public class MainClass
    {
        public void Execute(string parameter)
        {
            // 执行某些操作...
        }

        public void ExecuteWithoutParameters()
        {
            // 执行某些操作...
        }
    }
}

// 执行程序集 ExecutingAssembly.exe
public class ReflectionExample
{
    public void InvokeMethod(string methodName)
    {
        Assembly assembly = Assembly.LoadFile("...Assembly1.dll"); // 加载程序集

        Type type = assembly.GetType("TestAssembly.MainClass"); // 获取类型
        if (type != null)
        {
            MethodInfo methodInfo = type.GetMethod(methodName); // 获取方法信息
            if (methodInfo != null)
            {
                object result = null;
                ParameterInfo[] parameters = methodInfo.GetParameters(); // 获取参数信息
                object instance = Activator.CreateInstance(type); // 创建实例

                if (parameters.Length == 0)
                {
                    result = methodInfo.Invoke(instance, null); // 调用无参数方法
                }
                else
                {
                    object[] parameterValues = new object[] { "Hello" }; // 参数值
                    result = methodInfo.Invoke(instance, parameterValues); // 调用带参数方法
                }
            }
        }
    }
}

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