How to pass multiple parameter in blazor GetFromJsonAsync?

Question

Good Day Guys,

How to pass multiple parameter in blazor GetFromJsonAsync, I get error when using this code.

blazor webassembly

data= await http.GetFromJsonAsync<dataobject[]>($"api/Sample/Get/{id}/{date}");

.net core api

    [HttpGet("Get/{id}/{date}")]
    public ActionResult<List<dataobject>> Get(string id, string date)
    {
        
        
    }

As far as I can see, that seems correct, whats the error you are getting? Share your error or issue in more details — Umair
– Umair, Commented Sep 19, 2020 at 23:58
This is the error I get. Unhandled exception rendering component: The provided ContentType is not supported; the supported types are 'application/json' and the structured syntax suffix 'application/+json'. — user8551826
– user8551826, Commented Sep 20, 2020 at 0:10
The api works when using POSTMAN, but i can't make it run in blazor webassembly — user8551826
– user8551826, Commented Sep 20, 2020 at 0:18
I get it now, I'm passing date with format yyyy/MM/dd, just change it to yyyy-MM-dd. — user8551826
– user8551826, Commented Sep 20, 2020 at 0:26
For an explanation about the error, see stackoverflow.com/a/63863447/60761 — Henk Holterman
– Henk Holterman, Commented Sep 20, 2020 at 4:56

Umair · Accepted Answer · 2020-09-20 10:09:56Z

1

As you mentioned in the comment of your question you are using date as this format yyyy/MM/dd which means the / is considered as URL path. So you will need to URL encode your date which will become like this yyyy%2FMM%2Fdd which is now safe to send as URL path.

You can use HttpUtility.UrlEncode for URL encoding. Details here

answered Sep 20, 2020 at 10:09

Umair

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