loading resource bundle(.properties) file

Hello,

New to forum and also C Sharp. I want to load 'filename.properties' based on users language and read its keys like

if I say Console.WriteLine("hello "+ properties.getKey(hello.user)) it should print
hello english_user1 for english user.
hello french_user1 for french user.

my property file will look something as follows.

filename_english.properties: (for english user)
hello.user = english_user1
hello.pass= english_pass1

filename_french.properties: (for french user)
hello.user = french_user1
hello.pass = french_pass1

In java I can do above as follows:

public void loadMyPropertyFile() {
  public Properties props = new Properties();
  String userLanguage = "fr";
        try {
            InputStream is = this.getClass().getClassLoader().getResourceAsStream("resourcebundle/filename"+userLanguage+".properties");
            if (is == null) {
                throw new RuntimeException("Failed to load properties file: " + "filename"+userLanguage+".properties");
            }
            props.load(is);
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
            throw new RuntimeException("Failed to load properties file: " + "resourcebundle/filename"+userLanguage+".properties");
        }
}

I didn't fount Properties class companio and "this.getClass().getClassLoader().getResourceAsStream" companion of java in c#.

I am stuck due to this and needs expert advice. Much thanks in advance.

Thanks and Regards,
Rohit pol..