DxTreeView.CheckAll() Method

Checks all nodes in the TreeView.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public void CheckAll()

Remarks

You can check all TreeView nodes as follows:

• Call the CheckAll() method
• Check the Check All box in the UI

Call the ClearCheck() method to uncheck all nodes.

Note

The following actions change the check state of all nodes, even those that do not meet the applied filter criteria:

• CheckAll() method call
• ClearCheck() method call
• Recursive check mode update

The following example checks all nodes on a button click:

<DxButton Text="Check All" Click="Click" />

<DxTreeView @ref="MyTreeView" 
            Data="@Data"
            CheckMode="TreeViewCheckMode.Multiple">
    <DataMappings>
        <DxTreeViewDataMapping Text="Name"
                               Key="Id"
                               ParentKey="CategoryId" />
    </DataMappings>
</DxTreeView>

@code {
    DxTreeView MyTreeView;
    void Click() {
        MyTreeView.CheckAll();
    }
    // ...
}