C#: How to make sure a settings variable exists before attempting to use it from another assembly?

Question

I have the following:

using CommonSettings = MyProject.Commons.Settings;

public class Foo
{
    public static void DoSomething(string str)
    {
        //How d         


        

Answer 1

You could do the following:

public static void DoSomething(string str)
{
    object setting = null;

    Try
    {
        setting = CommonSettings.Default[str];
    }
    catch(Exception ex)
    {
        Console.out.write(ex.Message);
    }

    if(setting != null)
    {
        DoSomethingElse(setting);
    }
}

This would ensure the setting exists - you could go a bit further and try and catch the exact excetion - e.g catch(IndexOutOfBoundsException ex)