ReportPrintTool Class

A tool that allows you to publish reports in WinForms applications.

Namespace: DevExpress.XtraReports.UI

Assembly: DevExpress.XtraPrinting.v23.2.dll

NuGet Packages: DevExpress.Win.Navigation, DevExpress.Win.Printing

Declaration

C#

public class ReportPrintTool :
    PrintTool,
    IReportPrintTool,
    IReportTool,
    IDisposable

VB.NET

Public Class ReportPrintTool
    Inherits PrintTool
    Implements IReportPrintTool,
               IReportTool,
               IDisposable

Remarks

Use the ReportPrintTool class to show a report document in a Print Preview form or immediately send a report to a printer. Create an object of this class and pass the report to the object’s constructor. Use the print tool’s Report property to access a report assigned to a ReportPrintTool object. To publish reports in a Web reporting application, use the Web Document Viewer control.

The example below illustrates how to define a document scale factor in the Print Preview.

C#

using System;
using System.Windows.Forms;
using DevExpress.XtraPrinting;
using DevExpress.XtraReports.UI;
using DevExpress.XtraPrinting.Preview;
// ...

private void button1_Click(object sender, EventArgs e) {
    ReportPrintTool printTool = new ReportPrintTool(new XtraReport1());
    printTool.PreviewForm.Load += new EventHandler(PreviewForm_Load);
    printTool.ShowPreviewDialog();
}

void PreviewForm_Load(object sender, EventArgs e) {
    PrintPreviewFormEx frm = (PrintPreviewFormEx)sender;
    frm.PrintingSystem.ExecCommand(PrintingSystemCommand.Scale, new object[] { 0.7f });
}

VB.NET

Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraPrinting
Imports DevExpress.XtraReports.UI
Imports DevExpress.XtraPrinting.Preview
' ...

Private Sub button1_Click(ByVal sender As Object, _ 
ByVal e As EventArgs) Handles button1.Click
    Dim printTool As New ReportPrintTool(New XtraReport1())
    AddHandler printTool.PreviewForm.Load, AddressOf PreviewForm_Load
    printTool.ShowPreviewDialog()
End Sub

Private Sub PreviewForm_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim frm As PrintPreviewFormEx = CType(sender, PrintPreviewFormEx)
    frm.PrintingSystem.ExecCommand(PrintingSystemCommand.Scale, New Object() { 0.7f })
End Sub

Print Large Reports

Use the CachedReportSource component to print reports that include a huge amount of data. This component stores pages in a file system or database when the document is generated and thus allows you to avoid issues related to memory consumption. Assign the report that you want to print to a CachedReportSource object and pass this object to ReportPrintTool as a constructor parameter as shown in the example below:

C#

using DevExpress.XtraReports.UI;
using DevExpress.XtraPrinting.Caching;
// ...
var storage = new MemoryDocumentStorage();
var report = new XtraReport1();
var cachedReportSource = new CachedReportSource(report, storage);

ReportPrintTool printTool = new ReportPrintTool(cachedReportSource);

VB.NET

Imports DevExpress.XtraReports.UI
Imports DevExpress.XtraPrinting.Caching
' ...
Dim storage = New MemoryDocumentStorage()
Dim report = New XtraReport1()
Dim cachedReportSource = New CachedReportSource(report, storage)

Dim printTool As New ReportPrintTool(cachedReportSource)

Refer to the following topics for more details:

• Print a Report
• Invoke the Built-in Print Preview Form

Enable DirectX Rendering

The GDI+ library is the default rendering engine for Print Preview elements. If a preview displays a document that contains many pages, this engine might render this document slowly. To boost rendering performance, you can switch to the DirectX rendering engine. The following code sample demonstrates how to do it for the Ribbon Print Preview:

C#

using DevExpress.XtraReports.UI;
// ...
var printTool = new ReportPrintTool(new XtraReport1());
printTool.PreviewRibbonForm.PrintControl.UseDirectXPaint = DevExpress.Utils.DefaultBoolean.True;
printTool.ShowRibbonPreviewDialog();

VB.NET

Imports DevExpress.XtraReports.UI
' ...
Dim printTool = New ReportPrintTool(New XtraReport1())
printTool.PreviewRibbonForm.PrintControl.UseDirectXPaint = DevExpress.Utils.DefaultBoolean.True
printTool.ShowRibbonPreviewDialog()

You can also set the EnableSmoothScrolling property to True to allow for more smooth page scrolling in DirectX mode.

C#

using DevExpress.XtraReports.UI;
// ...
printTool.PreviewRibbonForm.PrintControl.UseDirectXPaint = DevExpress.Utils.DefaultBoolean.True;
printTool.PreviewRibbonForm.PrintControl.EnableSmoothScrolling = DevExpress.Utils.DefaultBoolean.True;

VB.NET

Imports DevExpress.XtraReports.UI
' ...
printTool.PreviewRibbonForm.PrintControl.UseDirectXPaint = DevExpress.Utils.DefaultBoolean.True
printTool.PreviewRibbonForm.PrintControl.EnableSmoothScrolling = DevExpress.Utils.DefaultBoolean.True

Note that smooth scrolling might require more application resources to render the pages.

The following limitations apply to the Print Preview when it uses DirectX rendering:

• The Cached Report Source component is not supported.
• The XRRichText control is rendered as an image. The default GDI+ library is used to render this control.
• String sizes in a document might be greater compared with the case when the GDI+ library is used to render the document.

Inheritance

Object

PrintToolBase

PrintTool

ReportPrintTool