How to use placeholders in a string resource programmatically

Question

What's the correct way to access a string resource and use its placeholders? The method I tried didn't work for me.

Name: MyPlaceholders

Value: {0} ({1})

What I want to put in each placeholder: Hello (World)

C#

resourceLoader.GetString("MyPlaceholders")

Current result

{0} ({1})

Answer 1

As the resource holds the format, you need to populate it.

string.Format(resourceLoader.GetString("MyPlaceholders"), "Hello", "World")