How can call method dynamically in c#

Question

I have a class , and in this class i have many method and i wanna call all method with out write name

This is my code and it work :

System.Reflection.MethodInfo[] methods = typeof(content).GetMethods(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);
        foreach (System.Reflection.MethodInfo m in methods)
        {
            Response.Write(typeof(content).GetMethod(m.Name).Invoke(null,null).ToString());
}

But i have one problem ,that code return just first method name

What should I do to get all of them? what's wrong ?

Your invoke call doesn't include the object you are calling that method on. For example, if you look at the solution here (http://stackoverflow.com/questions/801070/dynamically-invoking-any-function-by-passing-function-name-as-string) it calls invoke on an object which is an instance of that type: `method.Invoke(instance, null);`. — Alexandru, Jun 10 '15 at 19:55
@Alioza yeah i'm sure , i wrote `Response.Write(m.Name);` returned all method name — Mohammad Esmaeili, Jun 10 '15 at 20:04
@Oleg : i did some thing you say , but got some response again — Mohammad Esmaeili, Jun 10 '15 at 20:08
@Alexandru i did some thing you say , but got some response again — Mohammad Esmaeili, Jun 10 '15 at 20:08
Does it return only one method and then exit normally or does it throw an exception or something? — sirdank, Jun 10 '15 at 20:12

score 2 · Accepted Answer · answered Jun 10 '15 at 20:05

You need to invoke each method upon an instance. In the below example, .Invoke() is called against an instance of Content. That said, you're also making a redundant GetMethod() call. You can use the MethodInfo directly.

void Main()
{
    var content = new Content();

    System.Reflection.MethodInfo[] methods = typeof(Content).GetMethods(
        System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);

    foreach (System.Reflection.MethodInfo m in methods)
    {
        Response.Write(m.Invoke(content, null).ToString());
    }
}

public class Content
{
    public static void Test1() {}
    public static void Test2() {}
}

score 1 · Answer 2 · answered Jun 10 '15 at 20:19

Are all the methods you want to execute public and static? Good. Now check to see if you are passing the correct parameters to each method you want to call.

Invoke(null, null) only works for methods accepting no parameters. If you try to call methods that require parameters using .Invoke(null, null), an exception will be thrown.

For example, if you have two methods

public static void Example1() { ... }
public static void Example2(string example) { ... }

This code will run Example1(), print it out, and then crash when it tries to pass 0 parameters to Example2() To invoke Example2() you would need .Invoke(null, new object[1])

How can call method dynamically in c#

2 Answers2