C#

Find and Delete Object from JSON Array

See more JSON Examples

Demonstrates how to find an delete an object from a JSON array of objects. C#

bool success = false;

//  This example will delete the "Pasta" category object from Menu B.

//  {
//    "menus": [
//      {
//        "name": "Menu A",
//        "categories": [
//  			{
//  			"name": "Kebabs",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Burgers",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Pasta",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Appetizers",
//  			"description": "blah blah blah"
//  			}
//  		]
//  	},
//      {
//        "name": "Menu B",
//        "categories": [
//  			{
//  			"name": "Kebabs",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Burgers",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Pasta",
//  			"description": "blah blah blah"
//  			},
//  			{
//  			"name": "Appetizers",
//  			"description": "blah blah blah"
//  			}
//  		]
//  	  }
//  	]
//  }

Chilkat.JsonObject json = new Chilkat.JsonObject();
success = json.LoadFile("qa_data/json/menus.json");
if (success == false) {
    Debug.WriteLine(json.LastErrorText);
    return;
}

//  Find Menu B.
Chilkat.JsonObject menu = json.FindRecord("menus","name","Menu B",true);
//  assume menu is found..

//  Get the categories array, and then find the index of the "Pasta" menu category.
Chilkat.JsonArray catArr = menu.ArrayOf("categories");
//  Assume it is found..

//  Find the object where the name of the JSON member is "name", and the value is "Pasta"
int index = catArr.FindObject("name","Pasta",true);
if (index < 0) {
    Debug.WriteLine("Pasta not found.");
}
else {

    //  Delete the "Pasta" category record from Menu B
    success = catArr.DeleteAt(index);
    //  Assume OK..
}

//  Examine the JSON to see if it worked as expected..
json.EmitCompact = false;
Debug.WriteLine(json.Emit());