Take latest value from complex collection












2















i'm getting data from MongoDb in sorted order with key[not unique] as AB ,so i have to club the response and take the top unique values based on key using Linq[c#]



Response :



[{
"AB": "XY",
"BC": "TRAVEL",
"CD": "75",
"EF": "21"
},
{
"AB": "TY",
"BC": "STOP",
"CD": "344",
"EF": "55"
},
{
"AB": "XY",
"BC": "STOP",
"CD": "45",
"EF": "44"
},
{
"AB": "ZZ",
"BC": "STOP",
"CD": "89",
"EF": "33"
},
{
"AB": "TY",
"BC": "STOP",
"CD": "67",
"EF": "88"
},
{
"AB": "ZZ",
"BC": "TRAVEL",
"CD": "14",
"EF": "55"
}
]


Response is in sorted format i.e first response is latest



The result that i want to produce is :



[{
"AB": "XY",
"BC": "TRAVEL",
"CD": "75",
"EF": "21"
},
{
"AB": "ZZ",
"BC": "STOP",
"CD": "89",
"EF": "33"
},
{
"AB": "TY",
"BC": "STOP",
"CD": "344",
"EF": "55"
}]


as the AB key can contain different values










share|improve this question



























    2















    i'm getting data from MongoDb in sorted order with key[not unique] as AB ,so i have to club the response and take the top unique values based on key using Linq[c#]



    Response :



    [{
    "AB": "XY",
    "BC": "TRAVEL",
    "CD": "75",
    "EF": "21"
    },
    {
    "AB": "TY",
    "BC": "STOP",
    "CD": "344",
    "EF": "55"
    },
    {
    "AB": "XY",
    "BC": "STOP",
    "CD": "45",
    "EF": "44"
    },
    {
    "AB": "ZZ",
    "BC": "STOP",
    "CD": "89",
    "EF": "33"
    },
    {
    "AB": "TY",
    "BC": "STOP",
    "CD": "67",
    "EF": "88"
    },
    {
    "AB": "ZZ",
    "BC": "TRAVEL",
    "CD": "14",
    "EF": "55"
    }
    ]


    Response is in sorted format i.e first response is latest



    The result that i want to produce is :



    [{
    "AB": "XY",
    "BC": "TRAVEL",
    "CD": "75",
    "EF": "21"
    },
    {
    "AB": "ZZ",
    "BC": "STOP",
    "CD": "89",
    "EF": "33"
    },
    {
    "AB": "TY",
    "BC": "STOP",
    "CD": "344",
    "EF": "55"
    }]


    as the AB key can contain different values










    share|improve this question

























      2












      2








      2








      i'm getting data from MongoDb in sorted order with key[not unique] as AB ,so i have to club the response and take the top unique values based on key using Linq[c#]



      Response :



      [{
      "AB": "XY",
      "BC": "TRAVEL",
      "CD": "75",
      "EF": "21"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "344",
      "EF": "55"
      },
      {
      "AB": "XY",
      "BC": "STOP",
      "CD": "45",
      "EF": "44"
      },
      {
      "AB": "ZZ",
      "BC": "STOP",
      "CD": "89",
      "EF": "33"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "67",
      "EF": "88"
      },
      {
      "AB": "ZZ",
      "BC": "TRAVEL",
      "CD": "14",
      "EF": "55"
      }
      ]


      Response is in sorted format i.e first response is latest



      The result that i want to produce is :



      [{
      "AB": "XY",
      "BC": "TRAVEL",
      "CD": "75",
      "EF": "21"
      },
      {
      "AB": "ZZ",
      "BC": "STOP",
      "CD": "89",
      "EF": "33"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "344",
      "EF": "55"
      }]


      as the AB key can contain different values










      share|improve this question














      i'm getting data from MongoDb in sorted order with key[not unique] as AB ,so i have to club the response and take the top unique values based on key using Linq[c#]



      Response :



      [{
      "AB": "XY",
      "BC": "TRAVEL",
      "CD": "75",
      "EF": "21"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "344",
      "EF": "55"
      },
      {
      "AB": "XY",
      "BC": "STOP",
      "CD": "45",
      "EF": "44"
      },
      {
      "AB": "ZZ",
      "BC": "STOP",
      "CD": "89",
      "EF": "33"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "67",
      "EF": "88"
      },
      {
      "AB": "ZZ",
      "BC": "TRAVEL",
      "CD": "14",
      "EF": "55"
      }
      ]


      Response is in sorted format i.e first response is latest



      The result that i want to produce is :



      [{
      "AB": "XY",
      "BC": "TRAVEL",
      "CD": "75",
      "EF": "21"
      },
      {
      "AB": "ZZ",
      "BC": "STOP",
      "CD": "89",
      "EF": "33"
      },
      {
      "AB": "TY",
      "BC": "STOP",
      "CD": "344",
      "EF": "55"
      }]


      as the AB key can contain different values







      c# linq






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 '18 at 13:27









      Akhil RJAkhil RJ

      77111




      77111
























          1 Answer
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          3














          Well, you could utilize LINQ GroupBy method:



          var filteredResponse = response.GroupBy(o => o.AB).Select(g => g.First()).ToList();





          share|improve this answer

























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            1 Answer
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            active

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            3














            Well, you could utilize LINQ GroupBy method:



            var filteredResponse = response.GroupBy(o => o.AB).Select(g => g.First()).ToList();





            share|improve this answer






























              3














              Well, you could utilize LINQ GroupBy method:



              var filteredResponse = response.GroupBy(o => o.AB).Select(g => g.First()).ToList();





              share|improve this answer




























                3












                3








                3







                Well, you could utilize LINQ GroupBy method:



                var filteredResponse = response.GroupBy(o => o.AB).Select(g => g.First()).ToList();





                share|improve this answer















                Well, you could utilize LINQ GroupBy method:



                var filteredResponse = response.GroupBy(o => o.AB).Select(g => g.First()).ToList();






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 22 '18 at 18:16

























                answered Nov 22 '18 at 13:37









                FabjanFabjan

                10.3k21639




                10.3k21639






























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