using System;

public class Program

{

    public static void Main()

    {

        var url1 = Create("http://example.com/examples/", "/examples?query=test");

        Console.WriteLine(url1);

    }

     public static Uri Create(string baseAddress, string requestUri)

        {

            if (baseAddress == null)

            {

                throw new ArgumentNullException(nameof(baseAddress));

            }

​

            if (requestUri == null)

            {

                throw new ArgumentNullException(nameof(requestUri));

            }

            var trimmedBaseAddress = baseAddress.TrimEnd('/') + "/";

            var trimmedRequestPath = requestUri.TrimStart('/');

​

            var absoluteUri = new Uri(trimmedBaseAddress, UriKind.Absolute);

            var relativeUri = new Uri(trimmedRequestPath, UriKind.RelativeOrAbsolute);

​

            return relativeUri.IsAbsoluteUri ? relativeUri : new Uri(absoluteUri, relativeUri);

        }

}