ASP.NET

[HttpPost]
       public JsonResult GetRecordById(string  id)
       {
           var record = dc.TABLE1.FirstOrDefault(x => x.PART_NO == id);
           var result = new
           {
               Name = record.PARTI,
               Type = record.TYPE
           };
           return Json(result, JsonRequestBehavior.AllowGet);
       }

<script type="text/javascript">
   $(function () {
       $("#txtParti").autocomplete({
          source: '@Url.Action("GetParti")'
       });
   });
       $(function () {
           $("#txtPtno").autocomplete({
               source: '@Url.Action("GetPtno")'
           });
       });
       $('#BTNFET').onclick(function (fetrec) {
           var recordId = this.value;
           $.post('@Url.Action("GetRecordById")',
               {
                   "id": recordId
               },
               function (data) {
                   $("#txtParti").val(data.Name);
                   $("#Type").val(data.Type);
               });
       });
   </script>

<input type="button" id="BTNFET" onclick="fetrec();" />
 @Html.EditorFor(model => model.PARTI, new { htmlAttributes = new { @class = "form-control", @id = "txtParti", @placeholder = "PART NAME" } })
@Html.EditorFor(model => model.PART_NO, new { htmlAttributes = new { @class = "form-control", @id = "txtPtno", @placeholder = "PART NO" } })
 @Html.EditorFor(model => model.TYPE, new { htmlAttributes = new { @class = "form-control", @id = "Type", @placeholder = "ITEM TYPE" } })