blocks|key|2243099|text|就像这样|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2243100|Type+type+=+GetType("MyType");
MethodInfo+methodInfo+=+type.GetMethod(methodName);
methodInfo.Invoke()|code-block|syntax|javascript|2243101|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Something like

<pre><code>Type type = GetType("MyType");
MethodInfo methodInfo = type.GetMethod(methodName);
methodInfo.Invoke()
</code></pre>

blocks|key|2238186|text|我使用了这样的seomthing：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2238187|typeof(StringValidator<T>).GetMethod(restriction.Operacion.Nombre).Invoke(null,+param)+as+IList<T>;|code-block|syntax|javascript|2238188|根据包含该方法的类的类型(StringValidator)，然后通过方法的名称restriction.Operacion.Nombre获取该方法，并调用它。|2238189|希望能有所帮助|2238190|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I used seomthing like this:

<pre><code>typeof(StringValidator&lt;T&gt;).GetMethod(restriction.Operacion.Nombre).Invoke(null, param) as IList&lt;T&gt;;
</code></pre>

based on the type of the class that contains the method (StringValidator) then I get the method by it's name restriction.Operacion.Nombre, and Invoke it.

hope it helps

blocks|key|1223741|text|This+example拥有您正在寻找的内容，即：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1223742|String+s+=+(String)calledType.InvokeMember(
++++++++++++++++methodName,
++++++++++++++++BindingFlags.InvokeMethod+%7C+BindingFlags.Public+%7C+
++++++++++++++++++++BindingFlags.Static,
++++++++++++++++null,
++++++++++++++++null,
++++++++++++++++null);|code-block|syntax|javascript|1223743|(显然，这可能会根据返回类型等的不同而发生变化。)|1223744|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/Articles/19911/Dynamically-Invoke-A-Method-Given-Strings-with-Met^0|0|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

<a href="http://www.codeproject.com/Articles/19911/Dynamically-Invoke-A-Method-Given-Strings-with-Met" rel="nofollow">This example</a> has what you are looking for namely:

<pre><code>String s = (String)calledType.InvokeMember(
 methodName,
 BindingFlags.InvokeMethod | BindingFlags.Public | 
 BindingFlags.Static,
 null,
 null,
 null);
</code></pre>

(Obviously this may change depending on return types etc.)

blocks|key|1980005|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1980006|Type+t+=+Type.GetType(typeName);
t.InvokeMember("method",+BindingFlags.InvokeMethod+%7C+BindingFlags.Public,+null,+null,+null);|code-block|syntax|javascript|1980007|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>Type t = Type.GetType(typeName);
t.InvokeMember("method", BindingFlags.InvokeMethod | BindingFlags.Public, null, null, null);
</code></pre>

blocks|key|1223764|text|如果方法不是静态的，则需要类型、方法名称和实例|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1223765|检查Reflection:+How+to+Invoke+Method+with+parameters|offset|length|1223766|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2202381/reflection-how-to-invoke-method-with-parameters^0|0|2|1C|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

You need the type, the method name, and an instance if the method is not static

Check <a href="https://stackoverflow.com/questions/2202381/reflection-how-to-invoke-method-with-parameters">Reflection: How to Invoke Method with parameters</a>

blocks|key|1223782|text|您可以创建一个泛型方法，通过它们的名称在任何您想要的实例上调用方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1223783|public+void+RunMethodOn(object+obj,+String+methodName,params+Object[]+args)
++++++++{
++++++++++++if(obj+!=+null)
++++++++++++{
++++++++++++++++System.Reflection.MethodInfo+method+=+null;
++++++++++++++++method+=+obj.GetType().GetMethod(methodName);
++++++++++++++++if+(method+!=+null)
++++++++++++++++++++method.Invoke(obj,+args);
++++++++++++}
++++++++}|code-block|syntax|javascript|1223784|并使用它在您自己的实例上调用一个方法，如下所示：|1223785|public+void+RunMethod(String+methodName,params+Object[]+args)
++++++++++++{
+++++++++++++++++++ExecuteOn(this,+methodName,+args);
++++++++++++}|1223786|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can create a generic method to invoke methods by their name on any instance you want this way:

<pre><code>public void RunMethodOn(object obj, String methodName,params Object[] args)
 {
 if(obj != null)
 {
 System.Reflection.MethodInfo method = null;
 method = obj.GetType().GetMethod(methodName);
 if (method != null)
 method.Invoke(obj, args);
 }
 }
</code></pre>

And the use it to call a method on your own instance as you ask:

<pre><code>public void RunMethod(String methodName,params Object[] args)
 {
 ExecuteOn(this, methodName, args);
 }
</code></pre>

blocks|key|341014|text|你可以用一个扩展方法很好地做到这一点：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|341015|public+static+class+MethodEx
{
++++public+static+void+RunMethod(
+++++++++this+object+target,
+++++++++string+methodName,
+++++++++params+object[]+values)
++++{
++++++++var+type=target.GetType();
++++++++var+mi+=+
++++++++++type.GetMethod(methodName,values.Select(v=>v.GetType()).ToArray());
++++++++mi.Invoke(target,values);
++++}
}|code-block|syntax|javascript|341016|...and的用法如下：|341017|void+Main()
{
++++var+m=new+Monkey();
++++m.RunMethod("A",1);
++++m.RunMethod("A","frog");
}

class+Monkey
{
++++public+void+A(int+a)
++++{
++++++++Console.WriteLine("int+A+called");
++++}
++++public+void+A(string+s)
++++{
++++++++Console.WriteLine("string+A+called");
++++}
}|341018|它将根据提供的参数选择正确的重载，因此上面的代码给出了输出：|341019|341020|+int+A已调用|blockquote|341021|341022|字符串A被调用|341023|341024|我把更好的错误处理留给了操作员。|341025|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|14|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|16|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|18|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|X|$]]

You can do this very nicely with an extension method:

<pre><code>public static class MethodEx
{
 public static void RunMethod(
 this object target,
 string methodName,
 params object[] values)
 {
 var type=target.GetType();
 var mi = 
 type.GetMethod(methodName,values.Select(v=&gt;v.GetType()).ToArray());
 mi.Invoke(target,values);
 }
}
</code></pre>

...and use it as follows:

<pre><code>void Main()
{
 var m=new Monkey();
 m.RunMethod("A",1);
 m.RunMethod("A","frog");
}

class Monkey
{
 public void A(int a)
 {
 Console.WriteLine("int A called");
 }
 public void A(string s)
 {
 Console.WriteLine("string A called");
 }
}
</code></pre>

which will choose the right overload according to the supplied params, so the code above gives output:

<blockquote>
 int A called
 
 string A called
</blockquote>

I leave better error handling to the OP.

I would like to know if there is a way in c# to execute a method, if we have only it's name in a string ? 

<pre><code>string methodname="method"
this.RunMethod(methodname)
</code></pre>

Something like that ? 

Thanks :)

How to evaluate a function passed by a string in c#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我想知道在c#中是否有一种方法来执行一个方法，如果我们在一个字符串中只有它的名字？string methodname="method"this.RunMethod(methodname)像这样的吗？谢谢:)

问如何在c#中计算通过字符串传递的函数
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在c#中计算通过字符串传递的函数EN