How to get value by the help of key from KeyValuePair in C#

Question

static private List<KeyValuePair<string, Employee>> employeesList = new List<KeyValuePair<string, Employee>>();

This is my generic KeyValuePair List that stores employee objects with employeeid as key. How to get value i.e Employee object with the help of the string key.

Is there a reason not to use `Dictionary`? Otherwise you’ll need to search through the whole list — Sami Kuhmonen, Sep 29 '21 at 11:43
https://stackoverflow.com/questions/31414429/c-sharp-get-keys-and-values-from-listkeyvaluepairstring-string — Mehrdad Dowlatabadi, Sep 29 '21 at 11:45

GazTheDestroyer · Answer 1 · 2021-09-29T15:24:04.137

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using System.Linq;

Employee employee = employeesList.FirstOrDefault(x => x.Key == employeeId).Value;

You'd be better off using a Dictionary though. That way you could look up the Id directly rather than iterating the list.

Employee employee = employoeesDictionary[employeeId];

edited Sep 29 '21 at 15:24

answered Sep 29 '21 at 11:43

GazTheDestroyer

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`?` operator cannot be applied to `KeyValuePair` – Tolga Cakir Sep 29 '21 at 11:50
True. forgot KeyValuePair was a struct. Modded answer, thanks. – GazTheDestroyer Sep 29 '21 at 15:24

score 0 · Answer 2 · edited Sep 29 '21 at 14:45

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var employee = employeesList.FirstOrDefault(x => x.Key == "").Value;

you can not use ? operator.

edited Sep 29 '21 at 14:45

Ehsan Sajjad

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answered Sep 29 '21 at 11:52

Tolga Cakir

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How to get value by the help of key from KeyValuePair in C#

2 Answers2