devexpress - How to reset a dev express drop down menu in ASP.Net Core

Question

I just want to reset the drop down menu (set property value to null). But the code doesnt work. Here it is:

<div class="dx-field" id="showAwvMeldesitz">
                            <div class="dx-field-label">AWV-Meldesitz: <font color="red">*</font></div>
                            <div class="dx-field-value">
                                <div class="help-field">
                                    @(Html.DevExtreme().SelectBoxFor(model => model.Ueberweisung.AwvEinheit_Id)
                                          .ID("AwvEinheitSelect")
                                          .DataSource(Model.AwvEinheitList.OrderBy(v => v.Bezeichnung))
                                          .DisplayExpr("Bezeichnung")
                                          .ValueExpr("Id")
                                          .Placeholder("AWV-Meldesitz ausw?hlen ...")
                                          .SearchEnabled(true)
                                          .ReadOnly(Model.IsPostSaveSend)
                                          .ShowClearButton(true))
                                </div>
                                <img class="help-image" id="helpAwvEinheitSelect" src="~/images/Help.png" alt="Hilfe">
                                @(Html.DevExtreme().Popover().Target("#helpAwvEinheitSelect").ShowEvent("dxclick").CloseOnOutsideClick(true).Position(Position.Right)
                                      .ContentTemplate(@<iframe class="helpbox" src="~/Help/UeberweisungErfassen/AwvEinheitSelect.html"></iframe>).OnContentReady("RemovePadding"))

                            </div>
                        </div>

    function OnValueChangedAwvMeldepflicht(e) {
            $("#AwvEinheitSelect").dxSelectBox("instance").reset();
    }

question from:https://stackoverflow.com/questions/65946189/how-to-reset-a-dev-express-drop-down-menu-in-asp-net-core

Answer 1

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