Hat Tip 1 3 – Http Web Services Client Login

The .NET 2.0 included WebClient class to communicate with web server using HTTP protocol. However, WebClient class had some limitations. The .NET 4.5 includes HttpClient class to overcome the limitation of WebClient. Here, we will use HttpClient class in console application to send data to and receive data from Web API which is hosted on local IIS web server. You may use HttpClient in other .NET applications also such as MVC Web Application, windows form application, windows service application etc.

1. Hat Tip 1 3 – Http Web Services Client Login Client
2. Hat Tip 1 3 – Http Web Services Client Login Page

Let's see how to consume Web API using HttpClient in the console application.

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We will consume the following Web API created in the previous section.

Step 1: Weedcraft inc 1 3.

First, create a console application in Visual Studio 2013 for Desktop.

Step 2:

Open NuGet Package Manager console from TOOLS -> NuGet Package Manager -> Package Manager Console and execute following command.

Install-Package Microsoft.AspNet.WebApi.Client Snapheal 2 9 download free.

Step 3:

Step 1: Weedcraft inc 1 3.

First, create a console application in Visual Studio 2013 for Desktop.

Step 2:

Open NuGet Package Manager console from TOOLS -> NuGet Package Manager -> Package Manager Console and execute following command.

Install-Package Microsoft.AspNet.WebApi.Client Snapheal 2 9 download free.

Step 3:

Now, create a Student model class because we will send and receive Student object to our Web API.

Send GET Request

The following example sends an HTTP GET request to Student Web API and displays the result in the console.

Let's understand the above example step by step.

First, we have created an object of HttpClient and assigned the base address of our Web API. The GetAsync() method sends an http GET request to the specified url. The GetAsync() method is asynchronous and returns a Task. Task.wait() suspends the execution until GetAsync() method completes the execution and returns a result.

Once the execution completes, we get the result from Task using Task.result which is HttpResponseMessage. Now, you can check the status of an http response using IsSuccessStatusCode. Read the content of the result using ReadAsAsync() method.

Thus, you can send http GET request using HttpClient object and process the result.

Send POST Request

Similarly, you can send HTTP POST request using PostAsAsync() method of HttpClient and process the result the same way as GET request.

The following example send http POST request to our Web API. It posts Student object as json and gets the response.

The following table lists all the methods of HttpClient to send different HTTP requests.

Hat Tip 1 3 – Http Web Services Client Login Client

Hat Tip 1 3 – Http Web Services Client Login Page

Visit MSDN to know all the members of HttpClient and HttpClientExtension.