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Kendo UI Dropdownlist not display correct value

I had a situation like this, my dropdownlist supposedly it should display GUEST HOUSE based on my userPropertyID=3 but somehow it still not display the right value in dropdownlist. Need your help, thank you for your time.

  var userPropertyID = 3;

  var propertyTBL = [
  {"propertyID":"1","propertyName":"HOTEL"},
  {"propertyID":"2","propertyName":"RESORT"},
  {"propertyID":"3","propertyName":"GUEST HOUSE"},
  {"propertyID":"4","propertyName":"HOME"},
  {"propertyID":"5","propertyName":"MOTEL"}];

  
  var dropdownlist = $("#dropdownlist").kendoDropDownList({
    dataTextField: "propertyName",
    dataValueField: "propertyID",
    dataSource: propertyTBL
  });
  dropdownlist.select(userPropertyID);
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Untitled</title>

	<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.common.min.css" />
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.silver.min.css" />
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.silver.mobile.min.css" />

    <script src="https://kendo.cdn.telerik.com/2019.1.115/js/jquery.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.1.115/js/kendo.all.min.js"></script>
    <style>*{font-family:Arial;font-size:11px;}</style>
<body>
Property Name:<input id="dropdownlist"/>

</body>
</html>

Solution

  • This happens because you didn't assign correct kendo widget into variable. So it doesn't know kendo's functions.

    Correct way would be this (by using .data('kendoDropDownList'))

    var dropdownlist = $("#dropdownlist").data('kendoDropDownList');

    so in your case, you need change your part of code to this.

    var dropdownlist = $("#dropdownlist").kendoDropDownList({
    dataTextField: "propertyName",
    dataValueField: "propertyID",
    dataSource: propertyTBL
}).data('kendoDropDownList');

    But remember that indexing starts at 0 (I see in your code, that at index 3, you have again value HOME as is at index 0, so don't get confused by that).

    Now calling .value() function will work

    dropdownlist.select(userPropertyID - 1);

    Eventually, if you set value immediately after you create widget even in your real application, you can use value property to set it up

    var dropdownlist = $("#dropdownlist").kendoDropDownList({
    dataTextField: "propertyName",
    dataValueField: "propertyID",
    dataSource: propertyTBL,
    value: userPropertyID
}).data('kendoDropDownList');

    EDIT: To make it complete, here is your modified code snippet

      var userPropertyID = 3;

  var propertyTBL = [
  {"propertyID":"1","propertyName":"HOTEL"},
  {"propertyID":"2","propertyName":"RESORT"},
  {"propertyID":"3","propertyName":"GUEST HOUSE"},
  {"propertyID":"4","propertyName":"HOME"},
  {"propertyID":"5","propertyName":"MOTEL"}];

  
  var dropdownlist = $("#dropdownlist").kendoDropDownList({
    dataTextField: "propertyName",
    dataValueField: "propertyID",
    dataSource: propertyTBL
  }).data('kendoDropDownList');
  dropdownlist.select(userPropertyID - 1);
    <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Untitled</title>

	<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.common.min.css" />
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.silver.min.css" />
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.1.115/styles/kendo.silver.mobile.min.css" />

    <script src="https://kendo.cdn.telerik.com/2019.1.115/js/jquery.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.1.115/js/kendo.all.min.js"></script>
    <style>*{font-family:Arial;font-size:11px;}</style>
<body>
Property Name:<input id="dropdownlist"/>

</body>
</html>