To use an icon in the custom command button, an additional class ("k-icon") is needed. For example, to display the filter icon IconClass should be set like this:
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With tag helpers, it would look like this:
<kendo-grid name="Grid"> <datasource type="DataSourceTagHelperType.Ajax"> <transport> <read url="@Url.Action("CustomCommand_Read", "Grid")"/> </transport> </datasource> <columns> <column field="FirstName"/> <column field="LastName"/> <column field="Title"/> <column> <commands> <column-command text="ViewDetails" click="showDetails" icon-class="k-icon k-i-filter"/> </commands> </column> </columns> </kendo-grid>