Get Base URL of My Web Application

For those interested in the usage of Microsoft.Web.Administration.ServerManager, here's some code. Consider that an IIS application my have more than one binding, resulting in more than one URL per web application.

var siteName = "Default Web Site";
var appPath = "MyWebApplication";

var serverManager = new ServerManager();
var site = serverManager.Sites[siteName];
appPath = appPath.StartsWith("/") ? appPath : "/" + appPath;
var app = site.Applications[appPath];

var urls = new List<string>();

foreach (var binding in site.Bindings)
{
    var sb = new StringBuilder();
    sb.Append(binding.Protocol);
    sb.Append("://");
    if (!string.IsNullOrWhiteSpace(binding.Host))
    {
        sb.Append(binding.Host);
    }
    else
    {
        if (Equals(binding.EndPoint.Address, IPAddress.Any))
        {
            sb.Append("localhost");
        }
        else
        {
            sb.Append(binding.EndPoint.Address);
        }
    }

    if (binding.EndPoint.Port != 80)
    {
        sb.Append(":");
        sb.Append(binding.EndPoint.Port);
    }

    sb.Append(app.Path);
    urls.Add(sb.ToString());
}

You can use string baseURL = HttpContext.Current.Request.Url.Host.