This example demonstrates passing the basic options required by the DropDownList plugin.

<input data-bind="kendoDropDownList: { data: choices, value: selectedChoice }" />
<hr/>
Selected: <strong data-bind="text: selectedChoice"> </strong>

var ViewModel = function() {
   this.choices = ko.observableArray(["apple", "orange", "banana"]);
   this.selectedChoice = ko.observable();
};

                            ko.applyBindings(new ViewModel());

This example demonstrates binding against objects for the source data and specifying the properties to use for displaying in the field and for the value. The addChoice button and standard select show that the ComboBox is kept in sync with changes to the view model.

<button data-bind="click: open, disable: isOpen">Open</button>
<input type="checkbox" data-bind="checked: enabled" /> Enable<br/>
<hr/>
<input data-bind="kendoDropDownList: { dataTextField: 'name', dataValueField: 'id', data: choices, value: selectedChoice, isOpen: isOpen, enabled: enabled }" />
<hr/>
Selected: <strong data-bind="text: selectedChoice"> </strong>
<hr/>
<select data-bind="options: choices, optionsText: 'name', optionsValue: 'id', value: selectedChoice"> </select>
<button data-bind="click: addChoice">Add New Choice</button>

var ViewModel = function() {
    this.choices = ko.observableArray([
        { id: "1", name: "apple"},
        { id: "2", name: "orange"},
        { id: "3", name: "banana"}
    ]);

    this.selectedChoice = ko.observable();
    this.enabled = ko.observable(true);
    this.isOpen = ko.observable(false);
    this.open = function() {
        this.isOpen(true);
    };
    this.addChoice = function() {
        var num = this.choices().length + 1;
        this.choices.push({ id: num, name: "new" + num});
    };
};

                            ko.applyBindings(new ViewModel());

This example demonstrates setting global options in ko.bindingHandlers.kendoDropDownList.options. This helps to simplify the markup for settings that can be used as a default for all instances of this widget.

<input data-bind="kendoDropDownList: { data: choices, value: selectedChoice }" />
<hr/>
Selected: <strong data-bind="text: selectedChoice"> </strong>

var ViewModel = function() {
   this.choices = ko.observableArray(["apple", "orange", "banana"]);
   this.selectedChoice = ko.observable();
};

ko.bindingHandlers.kendoDropDownList.options.optionLabel = "choose a fruit...";

                            ko.applyBindings(new ViewModel());