In Xamarin Forms there is a native function called UriBuilder: it allow you to create a well-formed url. In my implementation, all parameters are in a Dictionary called parameters. Using Linq, I put in builder.Query only the parameters with a value.
UriBuilder builder = new UriBuilder(yourUrl);
Dictionary<string, string> parameters =
new Dictionary<string, string>();
parameters.Add("reference", Reference);
parameters.Add("param1", Param1);
builder.Query =
string.Join("&",
parameters.Where(p => !string.IsNullOrWhiteSpace(p.Value))
.Select(p => string.Format("{0}={1}",
Uri.EscapeDataString(p.Key),
Uri.EscapeDataString(p.Value))));
return builder.ToString();
Happy coding!
