how to create single json file using data from two different independent tables

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i want to generate a json file in which data is in this format

XML

var JSON = {
    menu: [
        {id: '0',sub: [
            {name: 'lorem ipsum 0-0',link: '0-0', sub: null},
            {name: 'lorem ipsum 0-1',link: '0-1', sub: null},
            {name: 'lorem ipsum 0-2',link: '0-2', sub: null}
            ]
        },
        {id: '1',sub: null},
        {id: '2',sub: [
            {name: 'lorem ipsum 2-2',link: '2-2', sub: [
                {name: 'lorem ipsum 2-2-0',link: '2-2-0', sub: null},
                {name: 'lorem ipsum 2-2-1',link: '2-2-1', sub: null},
                {name: 'lorem ipsum 2-2-2',link: '2-2-2', sub: null}                
            ]},
            ]
        },
    ]
}

id comes from one table and name, link comes from another table of same database

i m not able to get proper queries to get json file this way

also m using newtonsoft json in asp.net4.0

Posted 16-May-14 21:46pm

rajat321

Updated 16-May-14 21:47pm

v2

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anup.bhunia · Answer 1 · 2014-05-17T09:40:00

Create class in server side as below;

C#

[DataContract]
class MainMenu{
[DataMember]
public int id;

[DataMember]
public SubMenu[] sub;
}

[DataContract]
class SubMenu
{
[DataMember]
public string name;

[DataMember]
public string link;

[DataMember]
public SubMenu[] sub;
}

Now you need to create an array of MainMenu and populate them as per the information in the tables.
MainMenu[] oMainMenues;

Then you could return the oMainMenues as JSON object from Controller class if you use MVC.

If you want create a file anyway or want to return as customer string to form the JSon object in the client side; you could use the JSon serializer as following way.

C#

MemoryStream stream1 = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(MainMenu[]));
ser.WriteObject(YourStream, oMainMenues);

You could refer to followinf article for more related information;
How to: Serialize and Deserialize JSON Data[^]