/// <summary>
/// Obtains a casted object for the given json token. Returns the default value if the token key is not found in the JSON.
/// </summary>
/// <typeparam name="T">Type of object to return/cast to.</typeparam>
/// <param name="j">JToken to get value from.</param>
/// <param name="key">JSON Key to retrieve value from.</param>
/// <param name="defaultValue">Default value to return if Key was not found in the JToken.</param>
/// <returns>Value found in the JToken, otherwise the defaultValue provided.</returns>
public static T GetValueFromJToken <T>(this Newtonsoft.Json.Linq.JToken j, string key, T defaultValue)
{
if (!j.Any())
{
//if the JSON doesn't have args but we have a default value, use it!
return(defaultValue);
}
JToken obj = null;
if (j is JObject)
{
obj = ((JObject)j).GetValue(key, StringComparison.CurrentCultureIgnoreCase);
}
else
{
obj = j[key.ToLower(System.Globalization.CultureInfo.InvariantCulture)];
}
if (obj == null)
{
return(defaultValue);
}
T returnObj = default(T);
if (obj is Newtonsoft.Json.Linq.JArray)
{
returnObj = obj.ToObject <T>();
}
else
{
returnObj = obj.Value <T>();
}
//HACK: this is a conflict of interest; the DateTime conversion shouldn't be here!
if (returnObj is DateTime)
{
returnObj = Cast <T>(Convert.ToDateTime(returnObj).ToLocalTime());
}
return(returnObj);
}
/// <summary>
/// Obtains a casted object for the given json token. Throws an exception if the token key is not found in the JSON.
/// </summary>
/// <typeparam name="T">Type of object to return/cast to.</typeparam>
/// <param name="j">JToken to get value from.</param>
/// <param name="key">JSON Key to retrieve value from.</param>
/// <returns>Value found in the JToken, otherwise an exception is thrown.</returns>
public static T GetValueFromJToken <T>(this Newtonsoft.Json.Linq.JToken j, string key)
{
if (!j.Any())
{
throw new ArgumentException("JSON is empty, cannot satisfy: \"" + key + "\"");
}
JToken obj = null;
if (j is JObject)
{
obj = ((JObject)j).GetValue(key, StringComparison.CurrentCultureIgnoreCase);
}
else
{
obj = j[key.ToLower(System.Globalization.CultureInfo.InvariantCulture)];
}
if (obj == null)
{
throw new ArgumentException("Unable to locate JSON token: \"" + key + "\"");
}
T returnObj = default(T);
if (obj is Newtonsoft.Json.Linq.JArray)
{
returnObj = obj.ToObject <T>();
}
else
{
returnObj = obj.Value <T>();
}
//HACK: this is a conflict of interest; the DateTime conversion shouldn't be here!
if (returnObj is DateTime)
{
returnObj = Cast <T>(Convert.ToDateTime(returnObj).ToLocalTime());
}
return(returnObj);
}
