Key value pairs in C# Params

Question

I\'m looking for a way to have a function such as:

myFunction({\"Key\", value}, {\"Key2\", value});

I\'m sure there\'s something with anonymous

Answer 1

Funny, I just created (minutes ago) a method that allows to do that, using anonymous types and reflection :

MyMethod(new { Key1 = "value1", Key2 = "value2" });


public void MyMethod(object keyValuePairs)
{
    var dic = DictionaryFromAnonymousObject(keyValuePairs);
    // Do something with the dictionary
}

public static IDictionary<string, string> DictionaryFromAnonymousObject(object o)
{
    IDictionary<string, string> dic = new Dictionary<string, string>();
    var properties = o.GetType().GetProperties();
    foreach (PropertyInfo prop in properties)
    {
        dic.Add(prop.Name, prop.GetValue(o, null) as string);
    }
    return dic;
}

Answer 2

Using a dictionary:

myFunction(new Dictionary<string, object>(){
  {"Key", value}, 
  {"Key2", value}});

Which is straight forward, you need only one new Dictionary<K, V>, not for each argument. It's trivial to get the keys and values.

Or with an anonymous type:

myFunction(new {
  Key = value, 
  Key2 = value});

Which is not very nice to use inside the function, you'll need reflection. This would look something like this:

foreach (PropertyInfo property in arg.GetType().GetProperties())
{
  key = property.Name;
  value = property.GetValue(arg, null);
}

(Staight from my head, probably some errors...)