HttpContext.Current.Request.Form.AllKeys in ASP.NET CORE version

Question

foreach (string key in HttpContext.Current.Request.Form.AllKeys) { string value = HttpContext.Current.Request.Form[key]; }

What is the .net core version of the above code? Seems like .net core took out AllKeys and replaced it with Keys instead. I tried to convert the above code to the .net core way, but it throws an invalid operation exception.

HttpContext.Request.Form = 'HttpContext.Request.Form' threw an exception of type 'System.InvalidOperationException'

Converted code:

foreach (string key in HttpContext.Request.Form.Keys) { }

What's the message of the exception?

Tratcher
– Tratcher

2017-04-08 05:13:05 +00:00
Commented Apr 8, 2017 at 5:13 — Tratcher
– Tratcher, Commented Apr 8, 2017 at 5:13

Gabriel Robert · Accepted Answer · 2017-04-08 13:30:04Z

Your could use this:

var dict = Request.Form.ToDictionary(x => x.Key, x => x.Value.ToString());

In that case, you can iterate over your dictionary or you can access values directly:

dict["Hello"] = "World"

Jim B · Accepted Answer · 2022-09-07 18:24:19Z

Another option is:

StringValues s; Request.Form.TryGetValue("KeyName", out s); if (s.Count == 1) { string value = s.ToString(); }

Alessandro · Accepted Answer · 2020-06-09 23:41:34Z

var data = Request.Form.ToDictionary(x => x.Key, x => x.Value.ToString()); foreach (var item in data) { if (item.Key.Contains("hello")) { // ? } else if (item.Key.Contains("world")) { // ? } }

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