Microsoft KB Archive/172286

= ADT/ODE: How to Remove All Nodes from TreeView Control =

Article ID: 172286

Article Last Modified on 1/20/2007

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APPLIES TO


 * Microsoft Access 95 Standard Edition
 * Microsoft Access 97 Standard Edition
 * Microsoft Office 97 Developer Edition
 * Microsoft Access Developer's Toolkit 1.1

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This article was previously published under Q172286



Advanced: Requires expert coding, interoperability, and multiuser skills.



SUMMARY
The Microsoft TreeView control version 5.0 ships with Microsoft Office 97 Developer Edition.

Use the Clear method to remove all nodes in a TreeView control.

This article assumes that you are familiar with Visual Basic for Applications and with creating Microsoft Access applications using the programming tools provided with Microsoft Access. For more information about Visual Basic for Applications, please refer to the "Building Applications with Microsoft Access 97" manual.



MORE INFORMATION
The following example demonstrates creating a TreeView control, adding nodes, and then removing the nodes:

 Start Microsoft Access and open a new, blank database. Open a new form in Design view. On the Insert menu, click ActiveX Control (or click Custom Control if you are using Microsoft Access 7.0). In the Insert ActiveX Control dialog box, select the Microsoft TreeView Control, and then click OK.  Set the following properties of the TreeView Control:

       TreeView Control Name: tvcExample Width: 2 Height: 2   Add a command button to the form, and set the following properties:

<pre class="fixed_text">       Command Button --       Name: btnFillTreeView Caption: Fill TreeView Width: 1"       Height: .25" </li>  Set the OnClick property of the command button to the following event procedure:

Private Sub btnFillTreeView_Click

Dim nodX As Node   ' Declare Node variable.

With Me!tvcExample

' Set Treeview control properties. .LineStyle = tvwRootLines ' Linestyle 1 ' Add Node objects ' First node with 'Root1' as text. Set nodX = .Nodes.Add(,, "r1", "Root1") ' Second node on root with 'Root2' as text Set nodX = .Nodes.Add(,, "r2", "Root2") ' This next node is a child of Node 1 ("Root"). Set nodX = .Nodes.Add("r1", tvwChild, "child1", "Child")

End With

End Sub </li>  Add another command button to the form and set the following properties:

<pre class="fixed_text">       Command Button ---       Name: btnDeleteAllNodes Caption: Clear TreeView Width: .25"       Height: 1" </li>  Set the OnClick property of the command button to the following event procedure:

Private Sub btnDeleteAllNodes_Click Me!tvcExample.Nodes.Clear End Sub </li> Switch to Form view and click Fill TreeView; then click Clear Treeview, and note that all nodes are removed.</li></ol>

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