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DxTreeView.ExpandAll() Method

Expands all nodes in the DxTreeView.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.1.dll

NuGet Package: DevExpress.Blazor


public void ExpandAll()


Use the ExpandAll and CollapseAll() methods to expand and collapse all nodes in the DxTreeView.

The following code snippet implements the Expand all and Collapse all buttons.

<button type="button" @onclick="@(() => SampleTreeView.ExpandAll())">Expand all</button>
<button type="button" @onclick="@(() => SampleTreeView.CollapseAll())">Collapse all</button>

<DxTreeView @ref="@SampleTreeView">
    @* ... *@

@code  {
    DxTreeView SampleTreeView;


In Load Child Nodes on Demand mode, the ExpandAll method also loads all the child nodes that were not loaded yet.

See Also