List Of Dictionary to List of List<string> in LINQ-CodePudding

HI I have this example data which is in List<Dictionary<string,string>>

var menu = new List<Dictionary<string,string>> { new Dictionary<string, string> { { "Meal", "Pasta" }, { "Meal", "Pizza" } } , new Dictionary<string, string> { { "Entree", "Calamari Salad" } } },

I need to convert the above list to something like this

var menu = new List<List<string>> { new List<string> { "Meal:Pasta", "Meal:Pizza" }, new List<string> { "Entree:Calamari Salad" } };

how can I do this with LINQ query?

CodePudding user response：

First of all you will receive an exception, that "Meal" key already exist in dictionary.

Secondly, if you need to have the same types as you mentioned:

List<List<string>> result = menu.Select(m => m.Select(x => $"{x.Key}:{x.Value}").ToList()).ToList();

So result will looks like:

Please note, that I have replaced key and value for dictionary "Meal" to avoid receiving exeption about existing key.

CodePudding user response：

You can try like below.

var result = menu.Select(x => x.Select(y => $"{y.Key}:{y.Value}"));