HttpClient
を使用できます。
var client = new HttpClient();
client.BaseAddress = new Uri("http://54.193.102.251/CBR/api");
// here you can add additional information like authorization or accept headers
client.DefaultRequestHeaders
.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
// you can chose which http method to use
var response = await client.GetAsync("User?EmpID=1&ClientID=4&Status=true");
if (!response.IsSuccessStatusCode)
return; // process error response here
var json = await response.Content.ReadAsStringAsync(); // assume your API supports json
// deserialize json here
[?私はC#を使用してREST APIへの呼び出しを行うにはどうすればよい](の
可能な重複https://stackoverflow.com/questions/9620278/how-:ここにあなたのAPIを呼び出す
async
方法のサンプルですdo-i-make-calls-to-a-rest-api-using-c) – CodeCaster