@Victor LG’s answer using Newtonsoft is close, but it doesn’t technically avoid the a catch as the original poster requested. It just moves it elsewhere. Also, though it creates a settings instance to enable catching missing members, those settings aren’t passed to the DeserializeObject call so they are actually ignored.
Here’s a “catch free” version of his extension method that also includes the missing members flag. The key to avoiding the catch is setting the Error
property of the settings object to a lambda which then sets a flag to indicate failure and clears the error so it doesn’t cause an exception.
public static bool TryParseJson<T>(this string @this, out T result)
{
bool success = true;
var settings = new JsonSerializerSettings
{
Error = (sender, args) => { success = false; args.ErrorContext.Handled = true; },
MissingMemberHandling = MissingMemberHandling.Error
};
result = JsonConvert.DeserializeObject<T>(@this, settings);
return success;
}
Here’s an example to use it:
if(value.TryParseJson(out MyType result))
{
// Do something with result…
}