DxTreeView.CollapseAll() Method

Collapses all nodes in the DxTreeView.

Assembly : DevExpress.Blazor.v25.2.dll

Declaration

csharp

public void CollapseAll()

Remarks

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.

razor

<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;
    ...