Unable to retrieve parameter while making a POST request

Question

Unable to retrieve parameter while making a POST request

Need some help with attribute routing. I'm having trouble getting parameters from the HTTP body. The ConnectionID Class includes a property named CValue.

$('#btn').click(function () {
    $.ajax({
        type: "POST",
        url: "http://localhost:49289/api/Resolver/StartRun",
        data: { "CValue": connectionID },
        success: success,
        dataType: "json"
    });
});



[Route("api/Resolver/StartRun")]
[HttpPost]
public async Task<string> GetStatus([FromBody]ConnectionID connectionID)
{
}

javascript asp.net ajax asp.net-web-api asp.net-web-api-routing

Answer 1

Answer №1

To avoid CORS, consider changing your path to a relative one:

url: "/api/Resolver/StartRun",

This should resolve any issues. Below are some simple examples demonstrating the solution.

JavaScript

<script>
        $.ajax({
            type: "POST",
            url: "/api/Resolver/StartRun",
            data: { "CValue": "123" },
            success: new function(){},
            dataType: "json
           });
</script>

Controller

    [Route("api/Resolver/StartRun")]
    [HttpPost]
    public async Task<string> GetStatus([FromBody]ConnectionID connectionID)
    {
        return "test";
    }

Class

public class ConnectionID
{
    public string CValue { get; set; }
}

Screen shot

I'm confident in the parameter being populated, even though I can't provide a screenshot at the moment. If you follow the above steps, everything should work as expected. :)

Answer 2

To avoid CORS, consider changing your path to a relative one:

url: "/api/Resolver/StartRun",

This should resolve any issues. Below are some simple examples demonstrating the solution.

JavaScript

<script>
        $.ajax({
            type: "POST",
            url: "/api/Resolver/StartRun",
            data: { "CValue": "123" },
            success: new function(){},
            dataType: "json
           });
</script>

Controller

    [Route("api/Resolver/StartRun")]
    [HttpPost]
    public async Task<string> GetStatus([FromBody]ConnectionID connectionID)
    {
        return "test";
    }

Class

public class ConnectionID
{
    public string CValue { get; set; }
}

Screen shot

I'm confident in the parameter being populated, even though I can't provide a screenshot at the moment. If you follow the above steps, everything should work as expected. :)

Unable to retrieve parameter while making a POST request

Answer №1

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