Passing a List<string> to an MVC Web API method using the browser bar

Question

I have an MVC Web API Get method that accepts a List<string> as a parameter. I'm trying to access this method using simply the browser bar. How is this done? Using ../APIName?parameter1=value1&parameter2=value2&... passes a single parameter between two ampersands as opposed to a list.

Maggie Ying · Accepted Answer · 2012-12-06 05:13:56Z

40

Make sure your parameter of your action method is marked as [FromUri]. By default the value is expected to be passed from the body of the request since it is a complex type.
```
public List<string> Get([FromUri] List<string> parameter)
{...}
```
The query string parameter should be of this format .../APIName?parameter[]=value1&parameter[]=value2&....

Hope this helps.

answered Dec 6, 2012 at 5:13

Maggie Ying

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3 Comments

Onosa Over a year ago

Thank you for this answer, it did help. The square brackets "[]" were unnecessary for me.

Chris Surfleet Over a year ago

This isn't working for me. It works with the first 'parameter' call (with or without square brackets), but as soon as I add the second I just get a 500 message back from the server with no additional info, and no breakpoint hit in VS

sandiejat Over a year ago

@ChrisSurfleet - too late to reply but are you sure you added List<string> and not just string as the parameter type.

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