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BarCodeControl Class

Displays a bar code.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v24.2.dll

NuGet Package: DevExpress.Win.Navigation

#Declaration

public class BarCodeControl :
    BaseStyleControl

#Remarks

The BarCodeControl supports multiple bar code types. The following images illustrate some of them.

QR Code EAN 8 PDF417
BarCode-QRCode-ex BarCode-EAN8-ex BarCode-PDF417-ex

The bar code type is specified by the BarCodeControl.Symbology property.

  • At design time within Visual Studio, you can set this property using the Properties window.

    BarCode-SymbologyProperty-DT

    After selecting a bar code type, you can expand the Symbology property to access additional customization options.

    BarCode-SymbologyProperty-DT-Expanded

  • To specify the symbology in code, create a specific BarCodeGeneratorBase descendant and assign it to the Symbology property of the BarCodeControl.

    A bar code generator object provides access to additional customization properties specific to the selected bar code type.

Some of the main bar code options are described below.

#Tooltips

DevExpress controls support regular and super tooltips. Enable the ShowToolTips option to display tooltips when the mouse pointer hovers over the control.

Customize Regular Tooltip Text

Use the following properties of the target control to specify regular tooltip text and title:

API

Description

ToolTip

Specifies tooltip text. You can use line breaks in regular tooltips.

AllowHtmlTextInToolTip

Specifies whether to parse HTML tags in text.

ToolTipTitle

Specifies the tooltip title. If you do not specify tooltip text, the tooltip is not displayed even if you specify the title.

The following code snippet specifies tooltip text and title for a TextEdit editor:

public Form1() {
  InitializeComponent();
  textEdit1.ShowToolTips = true;
  textEdit1.ToolTipTitle = "Name";
  textEdit1.ToolTip = "Please enter your name";
}

WinForms - Customize a Regular Tooltip, DevExpress

Assign an Image to Regular Tooltips

Use the control’s ToolTipIconType property to assign a predefined icon. The ToolTipController.IconSize property specifies icon size.

Assign a custom image as follows:

  1. Create a ToolTipController and assign it to the control’s ToolTipController property.
  2. Create an image collection and assign it to the ToolTipController.ImageList property.
  3. Handle the ToolTipController.BeforeShow event. Use the e.ImageOptions parameter to assign a raster or vector image to the tooltip.

Note

The ToolTipIconType property has priority over e.ImageOptions. If you assign a custom image, set ToolTipIconType to None.

The following code snippet assigns a custom image to the TextEdit tooltip:

Note

textEdit1, toolTipController1, and svgImageCollection1 were created at runtime.

public Form1() {
  InitializeComponent();
  textEdit1.ShowToolTips = true;
  textEdit1.ToolTipTitle = "Name";
  textEdit1.ToolTip = "Please enter your name";
  textEdit1.ToolTipController = toolTipController1;
  toolTipController1.ImageList = svgImageCollection1;
  toolTipController1.BeforeShow += ToolTipController1_BeforeShow;
}

private void ToolTipController1_BeforeShow(object sender, ToolTipControllerShowEventArgs e) {
  ToolTipController controller = sender as ToolTipController;
  if (e.ToolTip == textEdit1.ToolTip)
    e.ImageOptions.SvgImage = (controller.ImageList as SvgImageCollection)["personalCard"];
}

WinForms - Assign a Custom Image to a Tooltip, DevExpress

Display a Super Tooltip

Use the control’s SuperTip property to assign a super tooltip. If you wish to use HTML tags in a super tooltip, enable the SuperToolTip.AllowHtmlText property.

Setting the ToolTipController.ToolTipType property to SuperTip converts existing regular tooltips to super tooltips.

WinForms - Convert Regular Tooltips to Super Tooltips, DevExpress

Tip

Read the following help topic for information on how to customize super tooltips: Hints and Tooltips.

#Example

This example illustrates how to use BarCodeControl to display a QR code.

BarCode-QRCode-ex2

using DevExpress.XtraPrinting.BarCode;
using DevExpress.XtraEditors;

BarCodeControl barCodeControl1 = new BarCodeControl();
barCodeControl1.Parent = this;
barCodeControl1.Size = new System.Drawing.Size(150, 150);
barCodeControl1.AutoModule = true;
barCodeControl1.Text = "1234567890";
QRCodeGenerator symb = new QRCodeGenerator();
barCodeControl1.Symbology = symb;

// Adjust the QR barcode's specific properties.
symb.CompactionMode = QRCodeCompactionMode.AlphaNumeric;
symb.ErrorCorrectionLevel = QRCodeErrorCorrectionLevel.H;
symb.Version = QRCodeVersion.AutoVersion;

#Inheritance

See Also