TreeList.CustomRowFilter Event

Allows you to specify the node visibility, regardless of the currently applied filter.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v18.1.dll

Declaration

C#

[DXCategory("Behavior")]
public event CustomRowFilterEventHandler CustomRowFilter

VB.NET

<DXCategory("Behavior")>
Public Event CustomRowFilter As CustomRowFilterEventHandler

Event Data

The CustomRowFilter event's data class is CustomRowFilterEventArgs. The following properties provide information specific to this event:

Property	Description
Item[TreeListColumn]	Gets a value of a specific column in the processed TreeListNode.
Row	Gets an object representing a data row in the underlying data source that corresponds to the processed TreeListNode.
Visible	Gets whether the processed TreeListNode is visible.

Example

The example below ensures that Tree List records with the 15% discount are always visible, regardless of the currently applied filtering condition.

C#

private void TreeList1_CustomRowFilter(object sender, CustomRowFilterEventArgs e) {
    TreeList treeList = sender as TreeList;
    string discount = treeList.GetRowCellDisplayText(e.Node, treeList.Columns["Discount"]);
    if (discount == "15%") {
        e.Visible = true;
        e.Handled = true;
    }
}

VB.NET

Private Sub TreeList1_CustomRowFilter(ByVal sender As Object, ByVal e As CustomRowFilterEventArgs)
    Dim treeList As TreeList = TryCast(sender, TreeList)
    Dim discount As String = treeList.GetRowCellDisplayText(e.Node, treeList.Columns("Discount"))
    If discount = "15%" Then
        e.Visible = True
        e.Handled = True
    End If
End Sub