How to create a list from a C# Dictionary return object

Question

My Ajax call returns a Dictionary from C#.

 return = pp.Shares
        .Select(c => new
        {
            c.Url,
            c.Name
        }).ToDictionary(d => d.Url, d => d.Name);

The above returns a JSON object

This means my return in JavaScript looks like:

key1: value
key2: value
key3: value2

I need to pass all values as an array to another function.

Do I have to loop through all the return values and create a new array for the values to pass to the required function, or is there a simpler way?

@OlivierDeMeulder, but I *know* the key. The point is, I don't care about the key as I only need to extract the value — MyDaftQuestions, Nov 29 '16 at 20:54

TimoStaudinger · Accepted Answer · 2016-11-29T19:10:57.767

3

The following assumes that the input is fixed and cannot be formatted e.g. as JSON.

First split your input up into lines, i.e. by \n or \r\n depending on the input. Then split the lines again into key and value and pick the values:

var input = 'key1: value\nkey2: value\nkey3: value2';

var lines = input.split('\n');
var values = lines.map(function(line) {
  return line.split(': ')[1];
});

console.log(values); // ["value", "value", "value2"]

Edit: Since your input is already provided in JSON format, it is even easier. JSON.parse() the string and extract the object values:

var input = '{"key1":"value","key2":"value","key3":"value2"}';

var parsed = JSON.parse(input);

var values = Object.keys(parsed).map(function(key) {
  return parsed[key];
});

console.log(values); // ["value", "value", "value2"]

edited Nov 29 '16 at 19:10

answered Nov 29 '16 at 19:03

TimoStaudinger

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There is, as far as I can see, no \n. I updated my post and will try this, but I'm surprised there is a newline ? – MyDaftQuestions Nov 29 '16 at 19:04
1

Well, the input in your question has line breaks. Note that I have no knowledge about C# dictionaries and their implementation. – TimoStaudinger Nov 29 '16 at 19:06
I can only say sorry. It returns a json object. I will try and add a screen shot of the DEV tools – MyDaftQuestions Nov 29 '16 at 19:07
See my edit. Working with JSON makes your life a lot easier. – TimoStaudinger Nov 29 '16 at 19:11
Why am I parsing it if it's already an object? – MyDaftQuestions Nov 29 '16 at 19:31
1

If it's already an object, you can skip the parse step. If you receive a JSON string, you need to parse it to a JavaScript object first. Note that there is no such thing as a _JSON object_. Either it's still a string, or it is a JavaScript object. – TimoStaudinger Nov 29 '16 at 19:33
Is a "javascript object formatted as json" better terminology (this makes no difference to my question, I'm just curious) – MyDaftQuestions Nov 29 '16 at 20:51
You could call it a JavaScript object _serialized_ as JSON! :-) And yes, in this case, you will need to parse the JSON first. – TimoStaudinger Nov 29 '16 at 20:54
1

Thanks for the extra explanation. I already upvoted so can't give any more :( – MyDaftQuestions Nov 29 '16 at 20:59

How to create a list from a C# Dictionary return object

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