TreeListSettingsEditing.AllowRecursiveDelete Property

Gets or sets whether parent nodes can be deleted.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue(false)]
public bool AllowRecursiveDelete { get; set; }

VB.NET

<DefaultValue(False)>
Public Property AllowRecursiveDelete As Boolean

Property Value

Type	Default	Description
Boolean	false	true to allow deleting parent nodes within their children; false only child nodes (not parent) can be deleted.

Property Paths

You can access this nested property as listed below:

Object Type	Path to AllowRecursiveDelete
ASPxTreeList	.SettingsEditing .AllowRecursiveDelete

Remarks

If the AllowRecursiveDelete option is disabled, an error message is displayed when deleting a parent node. To change the error text, use the TreeListSettingsText.RecursiveDeleteError property.

To learn more, see Adding and Deleting Nodes.

Example

This example shows how to delete selected nodes.

The image below shows the result:

To learn more, see Adding and Deleting Nodes.

C#

using DevExpress.Web.ASPxTreeList;

protected void Page_Load(object sender, EventArgs e) {
    ASPxTreeList1.SettingsEditing.AllowRecursiveDelete = true;
}
protected void ASPxTreeList1_CustomCallback(object sender,
TreeListCustomCallbackEventArgs e) {
    foreach (TreeListNode node in ASPxTreeList1.GetSelectedNodes())
        ASPxTreeList1.DeleteNode(node.Key);
    ASPxTreeList1.DataBind();
}

VB.NET

Imports DevExpress.Web.ASPxTreeList

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    ASPxTreeList1.SettingsEditing.AllowRecursiveDelete = True
End Sub

Protected Sub ASPxTreeList1_CustomCallback(ByVal sender As Object, _
ByVal e As TreeListCustomCallbackEventArgs)
    For Each node As TreeListNode In ASPxTreeList1.GetSelectedNodes()
        ASPxTreeList1.DeleteNode(node.Key)
    Next node
    ASPxTreeList1.DataBind()
End Sub

ASPX

<dxe:ASPxButton ID="ASPxButton1" runat="server" AutoPostBack="False"
    CssFilePath="~/App_Themes/Glass/{0}/styles.css"
    CssPostfix="Glass" OnClick="ASPxButton1_Click" Text="Delete Selected"
    EnableClientSideAPI="True">
    <ClientSideEvents Click="function(s, e) {
        treeList.PerformCallback('');
    }" />
</dxe:ASPxButton>