How to: Print a Tree List and Show its Print Preview

• Nov 13, 2018

The following example demonstrates how to print a TreeList with the TreeList.Print method, and show its print preview with the TreeList.ShowRibbonPrintPreview method.

The image below shows the Preview window for a sample Tree List control. The print commands provided by this window are displayed using a Ribbon UI.

C#

using DevExpress.XtraTreeList;
// ...

private void ShowTreeListPreview(TreeList treeList) {
    // Check whether the Tree List can be previewed.
    if (!treeList.IsPrintingAvailable) {
        MessageBox.Show("The Printing Library is not found", "Error");
        return;
    }

    // Open the Preview window.
    treeList.ShowRibbonPrintPreview();
}

private void PrintTreeList(TreeList treeList) {
    // Check whether the Tree List can be printed.
    if (!treeList.IsPrintingAvailable) {
        MessageBox.Show("The Printing Library is not found", "Error");
        return;
    }

    // Print.
    treeList.Print();
}

VB.NET

Imports DevExpress.XtraTreeList
' ...

Sub ShowTreeListPreview(ByVal treeList As TreeList)
   ' Check whether the Tree List can be previewed.
   If Not treeList.IsPrintingAvailable Then
      MessageBox.Show("The Printing Library is not found", "Error")
      Return
   End If

   ' Opens the Preview window.
   treeList.ShowRibbonPrintPreview()
End Sub

Sub PrintTreeList(ByVal treeList As TreeList)
   ' Check whether the Tree List can be printed.
   If Not treeList.IsPrintingAvailable Then
      MessageBox.Show("The Printing Library is not found", "Error")
      Return
   End If

   ' Print.
   treeList.Print()
End Sub