add Uri converter

UptimeSharp/Models/Monitor.cs

@@ -1,7 +1,7 @@
-using System;
-using System.Collections.Generic;
-using Newtonsoft.Json;
+using Newtonsoft.Json;
 using PropertyChanged;
+using System;
+using System.Collections.Generic;
 
 namespace UptimeSharp.Models
 {
@@ -30,15 +30,6 @@ namespace UptimeSharp.Models
     [JsonProperty("friendlyname")]
     public string Name { get; set; }
 
-    /// <summary>
-    /// Gets or sets the URI.
-    /// </summary>
-    /// <value>
-    /// The URI.
-    /// </value>
-    [JsonProperty("url")]
-    public string UriString { get; set; }
-
     /// <summary>
     /// Gets the URI.
     /// </summary>
@@ -46,22 +37,7 @@ namespace UptimeSharp.Models
     /// The URI.
     /// </value>
     [JsonIgnore]
-    public Uri Uri
-    {
-      get
-      {
-        Uri uri;
-        try
-        {
-          uri = new Uri(UriString);
-        }
-        catch
-        {
-          uri = null;
-        }
-        return uri;
-      }
-    }
+    public Uri Uri { get; set; }
 
     /// <summary>
     /// Gets or sets the port.

UptimeSharp/Utilities/JsonExtensions.cs

@@ -45,4 +45,36 @@ namespace UptimeSharp
       return new DateTime(1970, 1, 1, 0, 0, 0, 0).AddSeconds(Convert.ToDouble(reader.Value)).ToLocalTime();
     }
   }
+
+
+
+  public class UriConverter : JsonConverter
+  {
+    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+    {
+      if (reader.TokenType == JsonToken.String && Uri.IsWellFormedUriString(reader.Value.ToString(), UriKind.Absolute))
+      {
+        return new Uri(reader.Value.ToString());
+      }
+
+      return null;
+    }
+
+    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+    {
+      if (value == null)
+      {
+        writer.WriteNull();
+      }
+      else if (value is Uri)
+      {
+        writer.WriteValue(((Uri)value).OriginalString);
+      }
+    }
+
+    public override bool CanConvert(Type objectType)
+    {
+      return objectType.Equals(typeof(Uri));
+    }
+  }
 }