La désérialisation d'objets complexes à l'aide de Json.NET

J'ai besoin de désérialiser le json retourné à partir de grogle maps api:

{
"destination_addresses": [
"Via Medaglie D'Oro, 10, 47121 Forlì FC, Italia",
"Via Torino, 20123 Milano, Italia",
"Via Guglielmo Marconi, 71, 40121 Bologna, Italia",
"Via Irnerio, 40126 Bologna, Italia"
],
"origin_addresses": [
"Via Medaglie D'Oro, 10, 47121 Forlì FC, Italia",
"Via Torino, 20123 Milano, Italia",
"Via Guglielmo Marconi, 71, 40121 Bologna, Italia",
"Via Irnerio, 40126 Bologna, Italia"
],
"rows": [
{
"elements": [
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "286 km",
"value": 286281
},
"duration": {
"text": "2 ore 48 min",
"value": 10083
},
"status": "OK"
},
{
"distance": {
"text": "80,1 km",
"value": 80088
},
"duration": {
"text": "1 ora 3 min",
"value": 3789
},
"status": "OK"
},
{
"distance": {
"text": "77,6 km",
"value": 77594
},
"duration": {
"text": "57 min",
"value": 3422
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "288 km",
"value": 287811
},
"duration": {
"text": "2 ore 48 min",
"value": 10052
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "212 km",
"value": 212423
},
"duration": {
"text": "2 ore 8 min",
"value": 7664
},
"status": "OK"
},
{
"distance": {
"text": "218 km",
"value": 218219
},
"duration": {
"text": "2 ore 9 min",
"value": 7740
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "78,5 km",
"value": 78528
},
"duration": {
"text": "56 min",
"value": 3346
},
"status": "OK"
},
{
"distance": {
"text": "212 km",
"value": 212190
},
"duration": {
"text": "2 ore 5 min",
"value": 7519
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "2,0 km",
"value": 1979
},
"duration": {
"text": "5 min",
"value": 316
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "74,7 km",
"value": 74719
},
"duration": {
"text": "55 min",
"value": 3278
},
"status": "OK"
},
{
"distance": {
"text": "218 km",
"value": 217951
},
"duration": {
"text": "2 ore 9 min",
"value": 7712
},
"status": "OK"
},
{
"distance": {
"text": "3,8 km",
"value": 3782
},
"duration": {
"text": "11 min",
"value": 671
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
}
]
}
],
"status": "OK"
}

J'ai besoin de créer une Matrice de Distance donc, je suis seulement intéressé dans le champ "valeur" à l'intérieur "distance".

J'ai essayé cette approche:

DataSet data = JsonConvert.DeserializeObject<DataSet>(jsonResponse);
DataTable dataTab = data.Tables["Elements"];
foreach (DataRow elements in dataTab.Rows)
{
Console.WriteLine(elements["distance"]);
//Do something else here
}

Mais La JSonConvert renvoie "texte Supplémentaire constaté dans la chaîne JSON après la fin de la désérialisation d'un objet."

OriginalL'auteur Federico | 2013-12-13