Send variables to Web API method

Question

I have set up a basic MVC web API project with the following method in the ValuesController class -

// GET api/values/5
public string Get(int id)
{
    return "Success!";
}

And calling this in the client like -

client.BaseAddress = new Uri("http://localhost:12345/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

 HttpResponseMessage response = await client.GetAsync("api/values/5");
 if (response.IsSuccessStatusCode)
 {
     result = await response.Content.ReadAsStringAsync();
 }

I am relatively new t MVC however I am trying to modify this method to accept string variable to be used in a database call. For instance something like -

// GET api/values/number/house/street
public string Get(string no, string house, string street)
{
    // use variables
    return "Success!";
}

Then the client something like -

HttpResponseMessage response = await client.GetAsync("api/values/" + no + house + street);
 if (response.IsSuccessStatusCode)
 {
     result = await response.Content.ReadAsStringAsync();
 }

I am essentially trying to use the API as a webservice however unsure how to modify it to work in such a way.

When I tried the above code it returned Bad Request.

Rune Grimstad · Accepted Answer · 2014-03-10 13:12:33Z

1

You probably haven't setup the routing to your WebApi service. Check out this resource on how to set it up: http://www.asp.net/web-api/overview/web-api-routing-and-actions

EDIT:
Or, wait! If may be that the call to your service is wrong. If you look at your api method definition the comment tells you that the url should be as follows:

GET api/values/number/house/street

While it looks like you call it as:

GET api/values/NoHouseStreet

So there is no slash between the values. I am guessing that if you change the url you call to the following then things should work properly:

HttpResponseMessage response = await client.GetAsync("api/values/" + no + "/" + house + "/" + street);

answered Mar 10, 2014 at 13:12

Rune Grimstad

36.5k10 gold badges66 silver badges77 bronze badges

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

3 Comments

Ebikeneser Over a year ago

I think you are correct with your first assumption, as I have tried the second and it failed :(, I will try your first solution and will mark as correct if I get it working thank you for input.

Rune Grimstad Over a year ago

Glad it worked. But just for the sake of completeness. Was the problem the missing slashes or routing or both?

Ebikeneser Over a year ago

It was the routing bud, and also my lack of understating of MVC. I had to create a custom model and controller also and now I am able to request and send data perfectly. I now realise why asmx web services should be considered deprecated. MVC is great stuff.

Collectives™ on Stack Overflow

Send variables to Web API method

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related