How to cal web API in ASP.NET code behind page

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How to cal Web API in Asp.Net Code Behind Page ?
Url:

HTML

<a href=""></a><a href="http://111.93.203.157:8063/api/notification/eventnews"></a>[<a href="http://111.93.203.157:8063/api/notification/eventnews" target="_blank" title="New Window">^</a>]

Result Return:
{
"data": {
"result": [
{
"NewsEventId": 1,
"EventName": "Bijaya Sammelani",
"Description": "Happy Bijaya dasami",
"EventDate": "2017-10-13T00:00:00",
"CreatedDate": "2017-03-09T18:20:16.41",
"ActiveFlag": 0,
"EventImage": "2.png",
"EventImageURL": "http://111.93.203.157:8099/EventImage/"
},
{
"NewsEventId": 2,
"EventName": "Annual Day",
"Description": "Annual day of the Company",
"EventDate": "2001-04-20T00:00:00",
"CreatedDate": "2017-03-27T12:52:35.947",
"ActiveFlag": 0,
"EventImage": "3.png",
"EventImageURL": "http://111.93.203.157:8099/EventImage/"
}
],
"error": null
}
}

This my web api and return value.
I am not understand how to call this web api in my web application. My working in Web Form so i need to this api call my code behind page(.cs) page. I am not interested to use Ajax. Only need how to call this code behind page and Get this value.

What I have tried:

I am not understand how to call this web api in my web application. My working in Web Form so i need to this api call my code behind page(.cs) page. I am not interested to use Ajax. Only need how to call this code behind page and Get this value.

Posted 11-Apr-17 0:33am

Diptyajit Dey

Updated 11-Apr-17 10:07am

v2

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Comments

F-ES Sitecore 11-Apr-17 7:16am

Google "call web api from c#", you can use HttpRequest or webClient to do this depending on your needs\version of .net. That will get you the raw JSON at least and you can turn that JSON into an object by googling "deserialise JSON c#", again it depends what versions of .net you are using etc but there are lots of ways to do it.

https://docs.microsoft.com/en-us/aspnet/web-api/overview/advanced/calling-a-web-api-from-a-net-client

Diptyajit Dey 12-Apr-17 1:43am

Hi, I saw you exp but problem is i am using post method to collect(get data). I am not using any get method in the web api. I am always using post method for get data. please help me how to using post method to get the Data.

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Bryian Tan · Answer 1 · 2017-04-11T10:07:00

@DiptyajitDey:

I am not understand how to call this web api in my web application. My working in Web Form so i need to this api call my code behind page(.cs) page. I am not interested to use Ajax. Only need how to call this code behind page and Get this value.

I have an example in ASP.NET MVC: Asp.net MVC Warning Banner using Bootstrap and AngularUI Bootstrap[^]

But, this example using ASP.NET Web Forms, should get you started

C#

public class Product
{
    public int userId { get; set; }
    public int id { get; set; }
    public string title { get; set; }
    public string body { get; set; }
}

static void GetSomething()
{
    Product product = null;
    using (var client = new System.Net.Http.HttpClient())
    {
        client.BaseAddress = new Uri("http://jsonplaceholder.typicode.com");
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
        var response = client.GetAsync("posts/1").Result;
        if (response.IsSuccessStatusCode)
        {
            string responseString = response.Content.ReadAsStringAsync().Result;
            Newtonsoft.Json.Linq.JObject json = Newtonsoft.Json.Linq.JObject.Parse(responseString);
            product = Newtonsoft.Json.JsonConvert.DeserializeObject<Product>(responseString);
        }
    }
}

protected void Page_Load(object sender, EventArgs e)
{
    GetSomething();
}

Kaushikhalvadiya · Answer 2 · 2017-04-11T08:19:00

Solution 1

You need to use

HttpClient

to do this.

You also require

JSON.net library

to convert the JSon string to the specified dotnet type.

Check this article for clarity.

Posted 11-Apr-17 8:19am

Kaushikhalvadiya