Angular TreeList - Customize Column Headers

The TreeList generates column headers based on the names of data fields by default. For example, if a data field is "fullName", the column header text is "Full Name".

DevExtreme HTML5 JavaScript jQuery Angular Knockout UI component TreeList ColumnHeaders

Specify the columns.caption property to change the column header text.

jQuery
JavaScript
$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        columns: [
            { dataField: "CompanyName", caption: "Company" },
            // ...
        ]
    });
});
Angular
HTML
TypeScript
<dx-tree-list ... >
    <dxi-column dataField="CompanyName" caption="Company"></dxi-column>
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTreeList ... >
        <DxColumn data-field="CompanyName" caption="Company" />
    </DxTreeList>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxTreeList, {
    DxColumn
} from 'devextreme-vue/tree-list';

export default {
    components: {
        DxTreeList,
        DxColumn
    },
    // ...
}
</script>
React
App.js
import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import TreeList, {
    Column
} from 'devextreme-react/tree-list';

export default function App() {
    return (
        <TreeList ... >
            <Column dataField="CompanyName" caption="Company" />
        </TreeList>
    );
}

If you need a more specific customization, define a custom template in the columns.headerCellTemplate property. This property accepts a function or template container.

jQuery
JavaScript
$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        columns: [{
            dataField: "Title",
            caption: "Position",
            headerCellTemplate: function (header, info) {
                $('<div>')
                    .html(info.column.caption)
                    .css('font-size', '16px')
                    .appendTo(header);
            }
        }, {
            dataField: "Address",
            headerCellTemplate: $('<i style="color: black">Mailing Address</i>')
        }]
    });
 });
Angular
HTML
TypeScript
<dx-tree-list ... >
    <dxi-column
        dataField="Title"
        caption="Position"
        headerCellTemplate="titleHeaderTemplate">
    </dxi-column>
    <dxi-column
        dataField="Address"
        headerCellTemplate="addressHeaderTemplate">
    </dxi-column>
    <div *dxTemplate="let info of 'titleHeaderTemplate'">
        <p style="font-size:16px">{{info.column.caption}}</p>
    </div>
    <div *dxTemplate="let info of 'addressHeaderTemplate'">
        <i style="color: black">Mailing Address</i>
    </div>
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTreeList ... >
        <DxColumn
            data-field="Title"
            caption="Position"
            header-cell-template="title-header"
        />
        <DxColumn
            data-field="Address"
            header-cell-template="address-header"
        />
        <template #title-header="{ data }">
            <p style="font-size:16px">{{ data.column.caption }}</p>
        </template>
        <template #address-header">
            <i style="color: black">Mailing Address</i>
        </template>
    </DxTreeList>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxTreeList, {
    DxColumn
} from 'devextreme-vue/tree-list';

export default {
    components: {
        DxTreeList,
        DxColumn
    },
    // ...
}
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import TreeList, {
    Column
} from 'devextreme-react/tree-list';

const renderTitleHeader = (data) => {
    return <p style={{ font-size: '16px' }}>{data.column.caption}</p>;
}
const renderAddressHeader = () => {
    return <i style={{ color: 'black' }}>Mailing Address</i>;
}

export default function App() {
    return (
        <TreeList ... >
            <Column
                dataField="Title"
                caption="Position"
                headerCellRender={renderTitleHeader}
            />
            <Column
                dataField="Address"
                headerCellRender={renderAddressHeader}
            />
        </TreeList>
    );
}

To hide column headers, assign false to the showColumnHeaders property.

jQuery
JavaScript
$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        showColumnHeaders: false
    });
 });
Angular
HTML
TypeScript
<dx-tree-list ...
    [showColumnHeaders]="false">
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxTreeList ...
        :show-column-headers="false">
    </DxTreeList>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxTreeList from 'devextreme-vue/tree-list';

export default {
    components: {
        DxTreeList
    },
    // ...
}
</script>
React
App.js
import React from 'react';

import 'devextreme/dist/css/dx.light.css';

import TreeList from 'devextreme-react/tree-list';

export default function App() {
    return (
        <TreeList ...
            showColumnHeaders={false}>
        </TreeList>
    );
}
See Also