c# - JavaScriptSerializer.Deserialize() skip property if cannot parse it -

i deserializing json strings using person objects using code:

javascriptserializer serializer = new javascriptserializer(); person person = serializer.deserialize<person>(jsonstring); 

the person class has age property:

int age {get;set;} 

the json string has value like:

{age: 'not valid int'}

and getting exception follows:

cannot cast string int32

is there way tell javascriptserializer skip on error , continue other properties?

yes, possible control deserialization process writing custom javascriptconverter class:

public class personconverter : javascriptconverter {     public override object deserialize(idictionary<string, object> dictionary, type type, javascriptserializer serializer)     {         person person = new person();          foreach (string key in dictionary.keys)         {             var value = dictionary[key];              switch (key)             {                 case "name":                     person.name = (string)value;                     break;                  case "age":                     {                         if (value int)                         {                             person.age = (int)value;                         }                         else                         {                             int age;                             if (int.tryparse((string)dictionary[key], out age))                             {                                 person.age = age;                             } // else leave age null (or if int, leave 0); alternatively put else block here set value of choice                         }                     }                     break;             }         }          return person;     }      public override idictionary<string, object> serialize(object obj, javascriptserializer serializer)     {         throw new notimplementedexception();     }      public override ienumerable<type> supportedtypes     {                 {             return new[] { typeof(person) };         }     } } 

i have taken liberty of making person.age nullable, null indicates age unknown, if not acceptable modify converter default 0 or -1 when age not parseable:

public class person {     public string name { get; set; }     public int? age { get; set; } } 

usage:

var serializer = new javascriptserializer(); serializer.registerconverters(new[] { new personconverter() }); var person = serializer.deserialize<person>(jsonstring); 

example output:

    var serializer = new javascriptserializer();     serializer.registerconverters(new[] { new personconverter() });      var jsonstrings = new list<string>     {         "{ name: 'steve',  age: 21 }",         "{ name: 'teoman',  age: 'not valid int'}",         "{ name: 'queen elizabeth ii',  age: '89'}"     };      foreach (var jsonstring in jsonstrings)     {         var person = serializer.deserialize<person>(jsonstring);         console.writeline("name: {0}, age: {1}", person.name, person.age);     } 

name: steve, age: 21

name: teoman, age:

name: queen elizabeth ii, age: 89

please note have handled here: literal number, number inside string, , totally invalid value.