无法使用Angular 7在Kendo Multiselect中选择项目

Question

我在我的angular 7应用程序中使用kendo Multiselect控件，可以看到数据可以当前绑定，但是选择项目确实会添加到控件中。 isItemSelected事件存在一些问题，但无法理解。不确定是什么问题

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JSON-货币

class PostListView(ListView):
    model = models.ForumPost
    template_name = "forum/post_list.html"

    def get_context_data(self):
        context = super().get_context_data()
        return context

    def get_queryset(self):
        query_set = super().get_queryset()
        return query_set

class CreatePostView(CreateView):
    model = models.ForumPost
    fields = ("title", "description")
    template_name = "forum/create_post.html"

HTML

[{"Id":7,"Name":"AUD"},{"Id":10,"Name":"BND"},{"Id":19,"Name":"BRL"},{"Id":6,"Name":"CAD"},{"Id":5,"Name":"CHF"},{"Id":13,"Name":"CNH"},{"Id":12,"Name":"CNY"},{"Id":18,"Name":"DKK"},{"Id":3,"Name":"EUR"},{"Id":1,"Name":"GBP"},{"Id":9,"Name":"HKD"},{"Id":4,"Name":"JPY"},{"Id":14,"Name":"KRW"},{"Id":11,"Name":"KWD"},{"Id":17,"Name":"MYR"},{"Id":15,"Name":"NOK"},{"Id":16,"Name":"SEK"},{"Id":8,"Name":"SGD"},{"Id":2,"Name":"USD"}]

组件

<kendo-multiselect
                      [data]="LegalFundClasses.Currencies"
                      [(ngModel)]="value"
                      [textField]="Name"
                      [valueField]="Id"
                      [autoClose]="false"
                    >
                    <ng-template kendoMultiSelectItemTemplate let-dataItem>
                      <input type="checkbox" class="k-checkbox"
                        [checked]="isItemSelected(dataItem.Name)">
                      <label class="k-checkbox-label">{{ dataItem.Name }}</label>
                    </ng-template>
                    </kendo-multiselect>