React 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".

Specify the columns.caption property to change the column header text.
jQuery
$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        columns: [
            { dataField: "CompanyName", caption: "Company" },
            // ...
        ]
    });
});Angular
<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
<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
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
$(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
<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
<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
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
$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        showColumnHeaders: false
    });
 });Angular
<dx-tree-list ...
    [showColumnHeaders]="false">
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})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
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
If you have technical questions, please create a support ticket in the DevExpress Support Center.