Question

I have a type T with fields+properties that i’d like to populate from a dictionary, pref case insensitive

I can obviously do

foreach(PropertyInfo pi in t.GetProperties() )
.....

and then

foreach(FieldInfo pi in t.GetFields() )
.....

Hoping there’s a better way, perhaps using LINQ ?

Answer 1

Here is an option,

var propDict = t.GetProperties().ToLookup<PropertyInfo, string, Action<object, object>>(
    p => p.Name, p => (obj, val) => p.SetValue(obj, val, null));

var fieldDict = t.GetFields().ToLookup<FieldInfo, string, Action<object, object>>(
    f => f.Name, f => (obj, val) => f.SetValue(obj, val));

var memberDict = pDict.Concat(fDict).ToDictionary(p => p.Key, p => p.Value);

…and then to use something like…

Dictionary<string, object> outDict;
foreach (var keyval in outDict)
    memberDict[keyval.Key](container, keyval.Value);

…though not sure if it makes too much sense as going through properties/fields is relatively simple anyway, an idea maybe.