Call CRUD(GET, POST, PUT, DELETE) API using WebClient in c#

        

Here We will see how we can call all CRUD methods (GET, PUT, POST, DELETE) with the help of WebClient in c#.

you will need to add reference of "System.Web.Extensions" assembly to your project.

1. Call POST API :-

    string apiUrl = "http://localhost:26404/api/POSTAPI";

    object input = new

    {

        Name = txtName.Text.Trim()

    };

    string inputJson = (new JavaScriptSerializer()).Serialize(input);

    WebClient client = new WebClient();

    client.Headers["Content-type"] = "application/json";

    client.Encoding = Encoding.UTF8;

    string json = client.UploadString(apiUrl + "/PostCustomers","POST", inputJson);

2. Call GET API :-

    string apiUrl = "http://localhost:26404/api/GETAPI";

    WebClient client = new WebClient();

    client.Headers["Content-type"] = "application/json";

    client.Encoding = Encoding.UTF8;

    string json = client.DownloadString(apiUrl + "/GetCustomers");

3. Call PUT API :-

string apiUrl = "http://localhost:26404/api/PUTAPI";

object input = new

{

     Name = txtName.Text.Trim(),

};

                string inputJson = (new JavaScriptSerializer()).Serialize(input);

WebClient client = new WebClient();

        client.Headers["Content-type"] = "application/json";

        client.Encoding = Encoding.UTF8;

string json = client.UploadString(apiUrl + "/PutCustomers/1", "PUT" , inputJson);

4. Call DELETE API :-

string apiUrl = "http://localhost:26404/api/DELETEAPI";

WebClient client = new WebClient();

        client.Headers["Content-type"] = "application/json";

client.Encoding = Encoding.UTF8;

                string json = client.UploadString(apiUrl + "/DeleteCustomers/1", "DELETE" , "");