C#

    CookieContainer cookieCon = new CookieContainer();
public string postRequest(string url, String postData, String Username, String Password)
{
    try
    {
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
        request.Method = "POST";
        request.CookieContainer = cookieCon;
        request.ContentType = "application/json; charset=utf-8";
        request.Headers.Add("Cookie", "devicecookie=146.200.41.147.1446567416483.346;");
        request.UserAgent = "FireFox User Agent";
        request.Headers.Add("Accept-Language", "en-GB,en-US;q=0.8");
        request.Host = "www.collegename.co.uk";
        request.Headers.Add("Accept-Encoding", "gzip");
        request.KeepAlive = true;
        byte[] byteArr = Encoding.Default.GetBytes(postData);
        request.ContentLength = byteArr.Length;
        Stream dataStream = request.GetRequestStream();
        dataStream.Write(byteArr, 0, byteArr.Length);
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        StreamReader reader = new StreamReader(response.GetResponseStream());
        string source = reader.ReadToEnd();
        return source;

    }
    catch (Exception ex)
    {
        if (ex.Message.Contains("401"))
        {

        }
    }
    return null;
}

public ctrl_information()
    {
        InitializeComponent();
        if (LicenseManager.UsageMode == LicenseUsageMode.Designtime)) return;
        SomeMethod();
        //Other code
    }

[ExecuteOnlyAtRuntime]
public void SomeMethod()
{
     //Code here
}

public ctrl_information()
    {
        InitializeComponent();
        //if (LicenseManager.UsageMode == LicenseUsageMode.Designtime)) return; -- removing this line
        //now the SomeMethod() will only be executed at runtime  not in design time
        SomeMethod();
    }