Category / Section
How to scroll through the WinForms TreeViewAdv control using up or down arrow keys while in edit mode?
1 min read
Scroll through TreeViewAdv using up or down arrow keys
The user could navigate through the nodes in the TreeViewAdv control using the keyboard while in editing mode, by using the following code snippet:
C#
private void treeViewAdv1_BeforeEdit(object sender, Syncfusion.Windows.Forms.Tools.TreeNodeAdvBeforeEditEventArgs e) { TempNode=e.Node; TextBox t=e.TextBox; //To handle the Keys while editing the node t.KeyDown+=new KeyEventHandler(t_KeyDown); } private void t_KeyDown(object sender, KeyEventArgs e) { TextBox t=sender as TextBox; if(e.KeyData==Keys.Down||e.KeyData==Keys.Up) { //To Stop the editing this.treeViewAdv1.EndEdit(true); //To replace the edited contents into the selected node. TempNode.Text=t.Text; //End the event e.Handled=true; } }
VB
Private Sub treeViewAdv1_BeforeEdit(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Tools.TreeNodeAdvBeforeEditEventArgs) TempNode=e.Node Dim t As TextBox=e.TextBox 'To handle the Keys while editing the node AddHandler t.KeyDown, AddressOf t_KeyDown End Sub Private Sub t_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs) Dim t As TextBox=CType(IIf(TypeOf sender Is TextBox, sender, Nothing), TextBox) If e.KeyData=Keys.Down OrElse e.KeyData=Keys.Up Then 'To Stop the editing Me.treeViewAdv1.EndEdit(True) 'To replace the edited contents into the selected node. TempNode.Text=t.Text 'End the event e.Handled=True End If End Sub