C# Debug Extension of Dictionary which contains keys and Dictionaries-CodePudding

I am trying to add an extension for a Dictionary who takes key-value a key and a Dictionary, as follows, but I receive error 'Cannot implicitly convert type bool to string':

public static string GetParameterValue(
    this Dictionary<string, Dictionary<string, string>> src, string section, string key, out string value)
{
    value = null;
    if (src.TryGetValue(section, out Dictionary<string, string> sectionValue))
    {
        return sectionValue.TryGetValue(key, out value);    //error
    }
    return string.Empty;
}

I have multiple sections (imagine categories) and each section has a huge list of parameters and their values; section One has a list of key/value pairs, section Two the same etc. I am trying to have a Dictionary which is of the form

Dictionary<string, Dictionary<string, string>> Sections = new Dictionary<string, Dictionary<string, string>>();

which I populate like

Sections["Italian"].Add("Good morning", "Buon giorno");

and I want to have an extension so that I can do

string myWord = Sections.GetParameterValue("Italian", "Good morning")

so that myWord is "Buon giorno".

Maybe could you help?

CodePudding user response：

try this

Dictionary<string, Dictionary<string, string>> Sections = new Dictionary<string,  Dictionary<string, string> >();

Sections.AddParameterValue("Italian","Good afternoon", "Buon afternoon");
Sections.AddParameterValue("Italian","Good morning", "Buon giorno");
    
string myWord = Sections.GetParameterValue("Italian", "Good morning");


public static class Extensions
{
    public static string GetParameterValue(
    this Dictionary<string, Dictionary<string, string>> src, string key1,  string key2)
    {
        if (src.TryGetValue(key1, out var sectionValue))
                if (sectionValue.TryGetValue(key2, out var result)) return result;
    
        return string.Empty;
    }

    public static void AddParameterValue(
    this Dictionary<string, Dictionary<string, string>> src, string section, string key, string value)
    {
        if (!src.TryGetValue(section, out _)) src[section] = new Dictionary<string, string>();
        if (src[section].TryGetValue(key, out _)) src[section][key] = value;
        else src[section].Add(key, value);
    }
}