通过将函数名称作为字符串传递来动态调用任何函数 [英] Dynamically invoking any function by passing function name as string

问题描述

如何自动执行创建实例并动态执行其函数的过程?

How do I automate the process of getting an instance created and its function executed dynamically?

谢谢

也需要一个选项来传递参数.谢谢

Need an option to pass parameters too. Thanks

推荐答案

您是否只想调用无参数构造函数来创建实例?类型是否也指定为字符串，或者您可以将其设为通用方法吗?例如:

Do you just want to call a parameterless constructor to create the instance? Is the type specified as a string as well, or can you make it a generic method? For example:

// All error checking omitted. In particular, check the results
// of Type.GetType, and make sure you call it with a fully qualified
// type name, including the assembly if it's not in mscorlib or
// the current assembly. The method has to be a public instance
// method with no parameters. (Use BindingFlags with GetMethod
// to change this.)
public void Invoke(string typeName, string methodName)
{
    Type type = Type.GetType(typeName);
    object instance = Activator.CreateInstance(type);
    MethodInfo method = type.GetMethod(methodName);
    method.Invoke(instance, null);
}

或

public void Invoke<T>(string methodName) where T : new()
{
    T instance = new T();
    MethodInfo method = typeof(T).GetMethod(methodName);
    method.Invoke(instance, null);
}

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