The simple designer has two modes: report design and preview. When the user selects a new report or clicks the Design button on the toolbar, the application shows the designer control. When the user clicks the Preview button, the application renders the current report into the preview control and shows the result.
Add the following code to implement the SetDesignMode method:
Private Sub SetDesignMode(ByVal design As Boolean)
' show/hide preview/design panes
_c1rd.Visible = design
_c1ppv.Visible = Not design
' no properties in preview mode
If Not design Then
_lblPropGrid.Text = "Properties"
_ppg.SelectedObject = Nothing
End If
' attach copy of the report to preview control
' (so changes caused by script aren't saved)
If Not design Then
_c1ppv.Document = Nothing
_c1r.CopyFrom(_c1rd.Report)
Cursor = Cursors.WaitCursor
_c1r.Render()
If _c1r.PageImages.Count > 0 Then
_c1ppv.Document = _c1r.Document
End If
Cursor = Cursors.Default
End If
' done, update UI
UpdateUI()
End Sub
• C#
private void SetDesignMode( bool design)
{
// show/hide preview/design panes
_c1rd.Visible = design;
_c1ppv.Visible = !design;
// no properties in preview mode
if (!design )
{
_lblPropGrid.Text = "Properties";
_ppg.SelectedObject = null;
}
// attach copy of the report to preview control
// (so changes caused by script aren't saved)
if (!design )
{
_c1ppv.Document = null;
_c1r.CopyFrom(_c1rd.Report);
Cursor = Cursors.WaitCursor;
_c1r.Render();
if (_c1r.PageImages.Count > 0 )
_c1ppv.Document = _c1r.Document;
Cursor = Cursors.Default;
}
// done, update UI
UpdateUI();
}
Switching to design mode is easy, all you have to do is show the designer and hide the preview control. Switching to preview mode is a little more involved because it also requires rendering the report.
Note that the report is copied to a separate C1Report control before being rendered. This is necessary because reports may contain script code that changes the report definition (field colors, visibility, and so on), and we don't want those changes applied to the report definition.
|
