convert string to function: execute a function or event of my code

Question

I am stuck at a point where I wanted a string to execute a function or event of my code. For example if

string somestr = "fun";

I want to execute a function called fun

public bool fun()
{
    return true;
}

I can manipulate somestr to like "execute fun" or "fun()" or something.

I best I could have thought till now is create a event or function where I should check and compare the string in switch case and execute the function or raise the event like

public void ReceivedCommand()
{
    if(somestr == "fun")
    {
        bool b = fun();
    }
    else if(somestr == "Otherfun")
    {
        //Some Other Function
    }
}

But now the case is that I have few hundreds of function and few events and user can choose any of them. I am very sure that there should be something that can solve my thing in a easy way instead writing lot of ifs and switch.

Could you please point me to the right direction how should I be able to do this.

Check this out http://stackoverflow.com/questions/6469027/call-methods-using-names-in-c-sharp — Prajwal, Dec 01 '16 at 07:07

score 1 · Answer 1 · answered Dec 01 '16 at 07:08

1

You can use reflection to get the method that you want with it's name using Type.GetMethod(methodName). see this

answered Dec 01 '16 at 07:08

Emad

3,809
3
32
44

1

Something like [This](http://stackoverflow.com/questions/6469027/call-methods-using-names-in-c-sharp) right? – sujith karivelil Dec 01 '16 at 07:09
Thanks for your time. I'll have a look – Mohit S Dec 01 '16 at 07:15

score 1 · Answer 2 · answered Dec 01 '16 at 07:12

1

You could do it dynamically like this

class MethodInvoker
{
    delegate void TestDelegate();

    public void fun()
    {
        Console.WriteLine("fun");
    }

    public void InvokeFromString(string functionName)
    {
        TestDelegate tDel = () => { this.GetType().GetMethod(functionName).Invoke(this, null); };
        tDel.Invoke();
    }
}

and use it like this

var test = new MethodInvoker();
test.InvokeFromString("fun");

answered Dec 01 '16 at 07:12

Pepernoot

3,409
3
21
46

Lemme try this. I am sure it is going to work. :) – Mohit S Dec 01 '16 at 07:14

score 0 · Answer 3 · 2016-12-01T07:30:52.270

0

Use reflection. Something like this:

Type type = this.GetType();
MethodInfo methodInfo = type.GetMethod(somestr);
methodInfo.Invoke(this, userParameters);

// And this requires "using System.Reflection;"

or

Try this link, i hope it works

edited Dec 01 '16 at 07:30

answered Dec 01 '16 at 07:11

Are you sure? Lemme give it a try. But it seems its is not going to work. – Mohit S Dec 01 '16 at 07:16
It works, check this http://viralpatel.net/blogs/calling-javascript-function-from-string/ – Dec 01 '16 at 07:17
It's not a Javascript question. Look at the tags. – elshev Dec 01 '16 at 07:20
y, i saw : Use this link - https://www.codeproject.com/articles/19911/dynamically-invoke-a-method-given-strings-with-met – Dec 01 '16 at 07:24

convert string to function: execute a function or event of my code

3 Answers3