REST API get not accepting multiple parameters in C#

Question

I am using .NET 4.5 framework to build a REST API. This API has a get method with multiple parameters, but when I call the API, then it shows the bad request second parameter is null. In reality, I am passing the value for second parameter. Below is the method implementation,

[HttpGet()]
[Route("api/Mycontroller/{useid:int}")]
public List<GetDetails> GET([FromUri()] int useid,  DateTime loginDate)
{
    // Some logic
}

Request through C# code:

HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost/abc/");
client.DefaultRequestHeaders.Clear();

client.DefaultRequestHeaders.Accept.Add(
            new MediaTypeWithQualityHeaderValue("application/json"));

HttpResponseMessage clientResponse = Task.Run(async () => { return await client.GetAsync("api/Mycontroller/" + userid+"?LoginDate=" +TodaysDateParameter); }).Result;

Here result is returning null value due to bad request.

I tried various possibilities of query string, but nothing worked. I tried to remove route fromuri(), fromBody() but that was also not helpful.

What am I doing wrong?

@CamiloTerevinto if you can read the complete question then you will understand the question and various implementation that i had tried.I will be grate full if you help to solve problem rather than negative vote and comment. — Pavan
– Pavan, Commented Apr 28, 2019 at 12:37
Why the downvote, the question is clear enough? First thing to try is to define the loginDate parameter as a string. This way the model binding won't need to attempt to convert the parameter to a DateTime and you'll see that it is indeed possible to pass a second parameter. You haven't indicated the format of your TodaysDateParameter, but I suspect it's a format that's not recognized by the model binder. — to StackOverflow
– to StackOverflow, Commented Apr 28, 2019 at 12:46
@Joe: When i Define the parametertype for todaysDateParameter in route like TodaysDateParameter:Datatime} That is also not helpful. The strange thing is that datetime parameter passed to controller is reaching in a same way. What i mean is I have MVC controller which get the parameters from AJAX call, this controller create httpclient request and internally call the webapi.Controller is getting the value but not api — Pavan
– Pavan, Commented Apr 28, 2019 at 12:53
You still haven't said what is TodaysDateParameter in your C# code that makes the request. Is it a DateTime? In which case your code will format it as a string using the default, culture-specific format. Which is probably not what your webapi is expecting. — to StackOverflow
– to StackOverflow, Commented Apr 28, 2019 at 15:42
its datetime in c# code . Datetime format is DD-MM-YYYY HH:MM:SS — Pavan
– Pavan, Commented Apr 29, 2019 at 6:27

marc_s · Accepted Answer · 2019-04-28 13:10:56Z

1

You need to also add your second parameter to the [Route] attribute on your method - like this:

[Route("api/Mycontroller/{useid:int}/{loginDate}")]
public List<GetDetails> GET([FromUri()] int useid,  DateTime loginDate)

Then you can call your API method like this:

string queryUrl = $"api/Mycontroller/{userid}/{TodaysDateParameter}";

HttpResponseMessage clientResponse = Task.Run(async () => { return await client.GetAsync(queryUrl).Result;

answered Apr 28, 2019 at 13:10

marc_s

760k186 gold badges1.4k silver badges1.5k bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

CodeCaster Over a year ago

DateTime parameters have their own problems though: stackoverflow.com/questions/14359566/…

Collectives™ on Stack Overflow

REST API get not accepting multiple parameters in C#

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related