DxTreeView.CollapseAll() Method

Collapses all nodes in the DxTreeView.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor

Declaration

public void CollapseAll()

Remarks

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

The code sample below demonstrates how to implement 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">
    ...
</DxTreeView>    

@code  {
    DxTreeView SampleTreeView;
    ...