Retreive Data from Database in Json format in ASP.Net

Hi

How to retreive data from Database in a below format.

{
  "Version": "1.1",
  "TranDtls": {
    "TaxSch": "GST",
    "SupTyp": "B2B",
    "RegRev": "N",
    "IgstOnIntra": "N"
  },
  "DocDtls": {
    "Typ": "INV",
    "No": "SAMPLES/0002",
    "Dt": "13/01/2021"
  },
  "SellerDtls": {
    "Gstin": "29AAFCC9980M1ZR",
    "LglNm": "GSTZEN DEMO PRIVATE LIMITED",
    "Addr1": "Manyata Tech Park",
    "Loc": "BANGALORE",
    "Pin": 560077,
    "Stcd": "29"
  },
  "BuyerDtls": {
    "Gstin": "06AAMCS8709B1ZA",
    "LglNm": "Quality Products Private Limited",
    "Pos": "06",
    "Addr1": "133, Mahatma Gandhi Road",
    "Loc": "HARYANA",
    "Pin": 121009,
    "Stcd": "06"
  },
  "DispDtls": {
    "Nm": "Maharashtra Storage",
    "Addr1": "133, Mahatma Gandhi Road",
    "Loc": "Bhiwandi",
    "Pin": 400001,
    "Stcd": "27"
  },
  "ShipDtls": {
    "Gstin": "URP",
    "LglNm": "Quality Products Construction Site",
    "Addr1": "Anna Salai",
    "Loc": "Chennai",
    "Pin": 600001,
    "Stcd": "33"
  },
  "ItemList": [
    {
      "ItemNo": 0,
      "SlNo": "1",
      "IsServc": "N",
      "PrdDesc": "Computer Hardware - Keyboard and Mouse",
      "HsnCd": "33059011",
      "Qty": 25,
      "FreeQty": 0,
      "Unit": "PCS",
      "UnitPrice": 200,
      "TotAmt": 5000,
      "Discount": 0,
      "PreTaxVal": 0,
      "AssAmt": 5000,
      "GstRt": 18,
      "IgstAmt": 900,
      "CgstAmt": 0,
      "SgstAmt": 0,
      "CesRt": 0,
      "CesAmt": 0,
      "CesNonAdvlAmt": 0,
      "StateCesRt": 0,
      "StateCesAmt": 0,
      "StateCesNonAdvlAmt": 0,
      "OthChrg": 0,
      "TotItemVal": 5900
    }
  ],
  "ValDtls": {
    "AssVal": 5000,
    "CgstVal": 0,
    "SgstVal": 0,
    "IgstVal": 900,
    "CesVal": 0,
    "StCesVal": 0,
    "Discount": 0,
    "OthChrg": 0,
    "RndOffAmt": 0,
    "TotInvVal": 5900
  },
  "EwbDtls": {
    "TransId": "21ADAPP6261D1Z1",
    "TransName": "Just in time Shippers Pvt Limited",
    "TransMode": "1",
    "Distance": 0,
    "VehNo": "KA33A1234",
    "VehType": "R"
  }
}

Thanks