Dynamic kendo dropdownlist datasource when editing row

[lucerias]

I have customer grid, when user double clicks the row, the custom pop up editor will be shown, there is drop down to show list interest but i need to remove the interest of current selected customer row from the viewdata by using interest id. 

Customer Model:

    public class CustomerModel
    {

        [Display(Name = "Customer ID")]
        public int CustomerID { get; set; }

        [Display(Name = "Interest ID")]
        [UIHint("InterestDropDown")]
        public int InterestID { get; set; }

}

 

InterestDropDown.cshtml

@model int

@(
     Html.Kendo().DropDownListFor(m => m)
            .BindTo((System.Collections.IEnumerable)ViewBag.InterestList)
            .DataValueField("InterestID ")
            .DataTextField("InterestName")
            .OptionLabel("Please select")
)

Customer editor template

<table class="popup-layout-tbl" style="display: table;">
<tbody>

<tr id="trAppID">
<td>
                <div class="k-edit-label popup-label">
                    @Html.LabelFor(model => model.CustomerID , new { @class = "popup-label-text" } )
                </div>
                <div>
                    @Html.TextBoxFor(model => model.CustomerID , new { @readonly = true, @class = "popup-input" })
                    @Html.ValidationMessageFor(model => model.CustomerID )
                </div>
</td>
</tr>

<tr>
<td>
                <div class="k-edit-label popup-label">
                    @Html.LabelFor(model => model.InterestID , new { @class = "popup-label-text" } )
                </div>
                <div>
                    @Html.EditorFor(model => model.InterestID , new { @class = "popup-input" })
                    @Html.ValidationMessageFor(model => model.InterestID  )
                </div>
  
</td>
</tr>

</tbody>
</table>

 

Thanks.

 

[Georgi Krustev]

Hello,

If you would like to filter (reduce) the items in the DropDownList widget when in edit mode, then you will need to do the following things:

• access the dropdownlist using the edit event handler
• once dropdownlist is accessible, you can filter the data using DataSource API

This approach allows to remove of unwanted items from the data source.

Note that the widget cannot select items that are not present in the source. If the item you would like to remove is selected, then it could be lost.

Regards,
Georgi Krustev
Telerik