Get Single Resource in Asp.Net Web API
In my previous article, we discussed how to fetch data in Asp.Net Web API. Today we discuss how to get a single resource based on query string values.
Considering the same example, we fetch the single employee data based on its id, as shown below.
//GET: Employee based on id
[Route("api/employees/getemployee")]
[HttpGet]
public HttpResponseMessage GetEmployee(int id)
{
try
{
//int id = 1;
return Request.CreateResponse(HttpStatusCode.OK, Company.GetEmployee(id));
}
catch (Exception ex)
{
return Request.CreateResponse(HttpStatusCode.InternalServerError, ex);
}
}
Here we have declared the URI as api/{controller}/{actionMethod}. We have to pass id through the query string. Run the application and change the URL as https://localhost:44358/api/employees/getemployee?id=1, and it displays employee details whose id is “1” as shown below.
We can add more than one parameter also like below.
//GET: Employee based on id and name
[Route("api/employees/getemployee")]
[HttpGet]
public HttpResponseMessage GetEmployee(int id, string name)
{
try
{
//int id = 1;
return Request.CreateResponse(HttpStatusCode.OK, Company.GetEmployee(id, name));
}
catch (Exception ex)
{
return Request.CreateResponse(HttpStatusCode.InternalServerError, ex); }
}
Here we added one more parameter name to the request. Run the application and change the URL to https://localhost:44358/api/employees/getemployee?id=1&name=John, and it displays the output as shown below.
