Define assembly for extension method

Question

I'm trying to use extension method, but the method is defined twice with same name. Let's say A.Extensions.Ext() and B.Extensions.Ext() I need both references in my class and when trying

using A.Extensions;
using B.Extensions;
class C
{
    public void Main()
    {
        somevalue.Ext();
    }
}

I want to somehow define which method to use and I don't know how to do that. Thanks for help!

You can call the method explicitly, passing the object you want to act on as the first argument. You don't have to use the extension syntax. https://stackoverflow.com/questions/987541/explicitly-use-extension-method — Rup, Oct 20 '18 at 10:01
See also https://stackoverflow.com/questions/5283583/extension-methods-conflict — Rui Jarimba, Oct 20 '18 at 10:02

svoychik · Accepted Answer · 2020-07-29T20:41:29.627

There is a way to choose an extension method to be used

Assume you have two classes with extension methods for string

public static class Extension1
    {
        public static string GetLowerCaseResult(this string str)
        {
            return str.ToLowerInvariant();
        }
    }

    public static class Extension2
    {
        public static string GetLowerCaseResult(this string str)
        {
            return str.ToLowerInvariant();
        }
    }

to call it in Main method you have to explicitly specify class and method in this way

static void Main(string[] args)
        {
            var str = "QWERTY";
            Extension2.GetLowerCaseResult(str);
            Console.Read();
        }

Define assembly for extension method

1 Answers1