How to get property values from multiple Ids

Question

I have a compare function which has a 3 items to compare. My problem is how can I get their properties with their corresponding ID.

[System.Web.Http.HttpGet]
public List<Compares> CompareValues(string ids)
{
    var result = new List<Compares>();

    if (!string.IsNullOrEmpty(ids))
    {
        var nodes = ids.Split(',').ToList().TypedContentList();
        return nodes.Select(x => new KeyValuePair<int, string>(x.Id, x.GetPropertyValue<string>("title"))).ToList();
        /// Error : Cannot implicity convert type 'System.Collections.Generic.List....
    }

    return result;
}

The full message is as follows:

Cannot implicitly convert type 'System.Collections.Generic.IEnumerable' to 'System.Collections.Generic.List'. An explicit conversion exists (are you missing a cast?)

Appreciate any help.

Thanks in advance.

Jin

Can you post the values of `ids` and `nodes`? Also, your expected output. — Bijay Yadav, Feb 08 '19 at 08:35
https://stackoverflow.com/a/16824542/8435038 does that look like what you need? Your question doesn't make it easy to know what you want lol. — Dave C, Feb 08 '19 at 08:35
@Bijay data: _/// Umbraco/Api/Search/ComparisonKeyValues?ids=2874,2875,2876_ — Jin, Feb 08 '19 at 08:38
@John _Cannot implicitly convert type 'System.Collections.Generic.IEnumerable' to 'System.Collections.Generic.List'. An explicit conversion exists (are you missing a cast?)_ — Jin, Feb 08 '19 at 08:40
@Dave, but how can I get the IDs? sorry, I am new in C#. THanks — Jin, Feb 08 '19 at 08:46
Once you've split them it will be a List of Strings, so you need to convert your List to List - https://stackoverflow.com/a/6201377/8435038 — Dave C, Feb 08 '19 at 08:49
how can I split them? like this _var listOfIds = ids.Split(',').ToList()_ ? Thanks.. sorry for my noob question, I really new in C# :( — Jin, Feb 08 '19 at 10:05

score 0 · Answer 1 · answered Feb 20 '19 at 16:06

Your function expects to return a List<Compares>.

This line:

return nodes.Select(x => new KeyValuePair<int, string>(x.Id, x.GetPropertyValue<string>("title"))).ToList();

Is NOT returning List<Compares>, it's returning a list of KeyValuePairs<int,string> by the look of it.

How to get property values from multiple Ids

1 Answers1