IsNullFilterOperatorComponent

Represents the IsNull (Is null) filter operator for the TreeList. Use this operator to filter values that are null. See example. For more information and examples, refer to the article on setting default filter operators.

html

<kendo-treelist-column field="name" title="Name">
  <ng-template kendoTreeListFilterCellTemplate let-filter let-column="column">
    <kendo-treelist-string-filter-cell
      [column]="column"
      [filter]="filter">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
    </kendo-treelist-string-filter-cell>
  </ng-template>
</kendo-treelist-column>

html

<kendo-treelist-column field="yearsService" title="Years Service">
  <ng-template kendoTreeListFilterCellTemplate let-filter let-column="column">
    <kendo-treelist-numeric-filter-cell
      [column]="column"
      [filter]="filter">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
    </kendo-treelist-numeric-filter-cell>
  </ng-template>
</kendo-treelist-column>

html

<kendo-treelist-column field="hireDate">
  <ng-template kendoTreeListFilterCellTemplate let-filter let-column="column">
    <kendo-treelist-date-filter-cell
      [column]="column"
      [filter]="filter">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
     </kendo-treelist-date-filter-cell>
  </ng-template>
</kendo-treelist-column>

html

<kendo-treelist-column field="name" title="Name">
  <ng-template kendoTreeListFilterMenuTemplate let-filter let-column="column" let-filterService="filterService">
    <kendo-treelist-string-filter-menu
      [column]="column"
      [filter]="filter"
      [filterService]="filterService">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
    </kendo-treelist-string-filter-menu>
  </ng-template>
</kendo-treelist-column>

html

<kendo-treelist-column field="yearsService" title="Years Service">
  <ng-template kendoTreeListFilterMenuTemplate let-filter let-column="column" let-filterService="filterService">
    <kendo-treelist-numeric-filter-menu
      [column]="column"
      [filter]="filter"
      [filterService]="filterService">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
    </kendo-treelist-numeric-filter-menu>
  </ng-template>
</kendo-treelist-column>

html

<kendo-treelist-column field="hireDate">
  <ng-template kendoTreeListFilterMenuTemplate let-filter let-column="column" let-filterService="filterService">
    <kendo-treelist-date-filter-menu
      [column]="column"
      [filter]="filter"
      [filterService]="filterService">
      <kendo-treelist-filter-isnull-operator></kendo-treelist-filter-isnull-operator>
     </kendo-treelist-date-filter-menu>
  </ng-template>
</kendo-treelist-column>

Selector

kendo-treelist-filter-isnull-operator

Fields

Name	Type	Default	Description
text	string		The text displayed in the drop-down list for the filter operator.