getting Array-like query string from url parameters list C#

Question

I am struggling extracting values from the followin

https://hlapservice0i/Web/api/Purchaselist/Creditor?
 filter[logic]=and&
 filter[filters][0][value]=John Doe &
 filter[filters][0][field]=customFilter&
 filter[filters][0][operator]=contains&
 filter[filters][0][ignoreCase]=true

I'm trying to get that John Doe value stored in filter[filters][0][value]

It is a simple MVC controller.

Do you want to parse this string and get only filter[filters][0][value] value? — Sateesh Pagolu
– Sateesh Pagolu, Commented Feb 16, 2017 at 5:37
try Spliting string after IndexOf('?') on '&' and then the resulting elements on '=' to separate values from keys — slawekwin
– slawekwin, Commented Feb 16, 2017 at 7:40

Sateesh Pagolu · Accepted Answer · 2017-02-16 23:35:09Z

1

You could do like this..

Live Demo here

var match = Regex.Match(input,@"(?<=filter\[filters\]\[0\]\[value\]=).*?(?=&)");

match.Value will have value you are after, which is John Doe

Explained:

?<= forces match to start after first occurrence of filter[filters][0][value].

?= forces match to end before following character, which is, in this case, &

edited Feb 16, 2017 at 23:35

answered Feb 16, 2017 at 23:27

Sateesh Pagolu

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1 Comment

Ben Bozorg Over a year ago

Thanks for your help and effort :)

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