Extract base URl from a string in c#?

Question

I am currently working on a project with .NET 1.1 framework and I am stuck at this point. I have a string like \"http://www.example.com/mypage/default.aspx\" or it might be \"ht

Answer 1

Just create an extension to the Uri class. In my opinion things that should be there from the start. It will make your life easier.

public static class UriExtensions
 {                   
    public static Uri AttachParameters(this Uri uri, 
                                       NameValueCollection parameters)
    {
        var stringBuilder = new StringBuilder();
        string str = "?";
        for (int index = 0; index < parameters.Count; ++index)
        {
            stringBuilder.Append(str + 
                System.Net.WebUtility.UrlEncode(parameters.AllKeys[index]) +
                 "=" + System.Net.WebUtility.UrlEncode(parameters[index]));
            str = "&";
        }
        return new Uri(uri + stringBuilder.ToString());
    }

    public static string GetBaseUrl(this Uri uri) {
        string baseUrl = uri.Scheme + "://" + uri.Host;
        return baseUrl;
    }

    public static string GetBaseUrl_Path(this Uri uri) {
        string baseUrl = uri.Scheme + "://" + uri.Host + uri.AbsolutePath;
        return baseUrl;
    }
 }

Usage:

//url -  https://example.com/api/rest/example?firstname=Linus&lastname=Trovalds
Uri myUri = new Uri("https://example.com/api/rest/example").AttachParameters(
            new NameValueCollection
            {
                {"firstname","Linus"},
                {"lastname","Trovalds"}
            }
          );
// https://example.com
string baseUrl = myUri.GetBaseUrl();
// https://example.com/api/rest/example
string baseUrlandPath = myUri.GetBaseUrl_Path();