Multiple route paramters with same key in ASP.NET razor pages

Question

I have a requirement to create multiple quick filters on a table data in ASP.NET razor pages application.

For example filters like Show only my issues, Show issues from London location etc.

I want to manage all these quick filters using a single route parameter FilterBy which can make the url like this:

baseURL?FilterBy=OnlyMyIssues&FilterBy=LondonLocation

Can someone please help me with some way for this?

@D Gogana,the code of Noah Stahl can work,you can try to check the link and check if there is something wrong in your code. — Yiyi You
– Yiyi You, Commented Aug 2, 2021 at 6:50

Noah Stahl · Accepted Answer · 2021-07-31 02:23:21Z

1

You can use a parameter of type string array (string[]) to capture multiple values of the same type and query string key. For example:

[HttpGet("/GetStuff")]
public IActionResult GetStuff([FromQuery] string[] FilterBy)
{
    // Apply each value in FilterBy, if any
}

For this query:

GET /getstuff?filterby=foo&filterby=bar

You should see this come into the API method:

If your filters expect different types of values, like booleans and strings, this wouldn't work or be a good design. Better to use dedicated keys like issueType and location each expecting the appropriate type of value.

answered Jul 31, 2021 at 2:23

Noah Stahl

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2 Comments

D Gogana Over a year ago

Thanks for the suggestion Noah. I did try using string array but that didn’t seem to work. I will look towards your suggestion to use separate keys. Thanks

Noah Stahl Over a year ago

Please add the code you've tried to your question.

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