If you are consuming a JSON web service, you can use the
DataContractJsonSerializer class to deserialize
a JSON string into an object so that you can manipulate the JSON string like an
ordinary object. However, it is always a challenge to convert a JSON string
into its class representation.
A good and easy way to convert a JSON string into its class
representation is to use the tool at
http://jsontodatacontract.azurewebsites.net/.
Suppose you have the following JSON string to convert:
{
"postalcodes": [
{
"adminCode3":"70828",
"adminName2":"Reutte",
"adminName3":"Reutte",
"adminCode2":"708",
"postalcode":"6600",
"adminCode1":"T",
"countryCode":"AT",
"lng":10.724044444,
"placeName":"Ammerwald",
"lat":47.490988888,
"adminName1":"Tirol"
},
{
"adminCode3":"70805",
"adminName2":"Reutte",
"adminName3":"Breitenwang",
"adminCode2":"708",
"postalcode":"6600",
"adminCode1":"T",
"countryCode":"AT",
"lng":10.7050916669573,
"placeName":"Bad
Kreckelmoos",
"lat":47.4900855904715,
"adminName1":"Tirol"
}
]
}
All you need to do
is to navigate to
http://jsontodatacontract.azurewebsites.net/
and paste it your JSON string. Also, give a name to the root class that will be
generated for you (in this case I have called it
PostalResult, select the language you want it to generate in (
C#), and select the
DataContract serialization model. Click
the
Generate code! button.
The following classes
are automatically generated:
// Type created for JSON at <>
[System.Runtime.Serialization.DataContractAttribute()]
public partial class PostalResult
{
[System.Runtime.Serialization.DataMemberAttribute()]
public Postalcodes[]
postalcodes;
}
// Type created for JSON at <> -->
postalcodes
[System.Runtime.Serialization.DataContractAttribute(Name="postalcodes")]
public partial class Postalcodes
{
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminCode3;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminName2;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminName3;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminCode2;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
postalcode;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminCode1;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
countryCode;
[System.Runtime.Serialization.DataMemberAttribute()]
public double lng;
[System.Runtime.Serialization.DataMemberAttribute()]
public string placeName;
[System.Runtime.Serialization.DataMemberAttribute()]
public double lat;
[System.Runtime.Serialization.DataMemberAttribute()]
public string
adminName1;
}
You can paste the
above classes into your project. To make use of it, use the following code
snippet:
using
System.Runtime.Serialization.Json;
using
System.Diagnostics;
using
System.IO;
using
System.Text;
private void JSON_Demo()
{
string json = @"
{
""postalcodes"": [
{
""adminCode3"":""70828"",
""adminName2"":""Reutte"",
""adminName3"":""Reutte"",
""adminCode2"":""708"",
""postalcode"":""6600"",
""adminCode1"":""T"",
""countryCode"":""AT"",
""lng"":10.724044444,
""placeName"":""Ammerwald"",
""lat"":47.490988888,
""adminName1"":""Tirol""
},
{
""adminCode3"":""70805"",
""adminName2"":""Reutte"",
""adminName3"":""Breitenwang"",
""adminCode2"":""708"",
""postalcode"":""6600"",
""adminCode1"":""T"",
""countryCode"":""AT"",
""lng"":10.7050916669573,
""placeName"":""Bad
Kreckelmoos"",
""lat"":47.4900855904715,
""adminName1"":""Tirol""
}]
}";
//---convert the json string into a
memorystream
// object---
MemoryStream stream = new
MemoryStream(Encoding.UTF8.GetBytes(json));
var serializer = new DataContractJsonSerializer(
typeof(PostalResult));
PostalResult result = (PostalResult)
serializer.ReadObject(stream);
for (int i = 0;
i <=
result.postalcodes.Length - 1;
i++)
{
//---print out the place
name---
Debug.WriteLine(
result.postalcodes[i].placeName.ToString());
//---print out the latitude---
Debug.WriteLine(
result.postalcodes[i].lat.ToString());
//---print out the longitude---
Debug.WriteLine(
result.postalcodes[i].lng.ToString());
Debug.WriteLine("----------");
}
}
The above code will print out the following result:
Ammerwald
47.490988888
10.724044444
----------
Bad
Kreckelmoos
47.4900855904715
10.7050916669573
----------
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