DevExtreme React - Column Sizing

If you do not explicitly specify certain columns' width, the TreeList distributes the available space equally among columns at startup. As a result, cell values may appear truncated. Use the columnMinWidth option to specify a minimum width for all columns and the minWidth for an individual column. Note that all these settings may cause horizontal scrolling if columns cannot fit into the widget's width.

$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        columnMinWidth: 100,
        columns: [{
            dataField: "Title",
            width: 200
        }, {
            dataField: "Address",
            minWidth: 150
        }]
    });
});

Set the columnAutoWidth option to true to make all columns adjust their widths to their content.

$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        columnAutoWidth: true
    });
});

The widget allows a user to resize columns in two different modes: by changing the next column's width or the widget's width. To enable this functionality and set the mode, specify the allowColumnResizing and columnResizingMode options, respectively. Note that you can prevent a specific column from being resized by assigning false to its allowResizing option.

$(function() {
    $("#treeListContainer").dxTreeList({
        // ...
        allowColumnResizing: true,
        columnResizingMode: 'widget', // or 'nextColumn'
        columns: [{
            dataField: "Title",
            allowResizing: false
        }, // ...
        ]
    });
});

View Demo

See Also

• TreeList - Column Reordering