MSI - Plessey

• May 22, 2026
• 2 minutes to read

MSI, also known as Modified Plessey, is a continuous numeric symbology used for retail inventory control. Applications often implement a fixed-length MSI code.

View Example

Examples

Configure Barcode Settings (CodeMSIOptions)

Use the CodeMSIOptions class to configure MSI barcode settings.

The following code snippet creates an MSI barcode and customizes its options:

C#

using DevExpress.Docs.Barcode;
using DevExpress.Drawing;
using System.Drawing;

var msiOptions = new CodeMSIOptions();
msiOptions.ShowText = true;
msiOptions.Padding = new Padding(5);
msiOptions.BorderWidth = 1;

using var msiOptionsStream = new FileStream(Path.Combine(outDir, "barcode_symbology_msi_plessey.png"), FileMode.Create, FileAccess.Write);
using var msiOptionsGenerator = new BarcodeGenerator(msiOptions);
msiOptionsGenerator.Export("1234567", msiOptionsStream, DXImageFormat.Png);

VB.NET

Imports DevExpress.Docs.Barcode
Imports DevExpress.Drawing
Imports System.Drawing

Dim msiOptions As New CodeMSIOptions()
msiOptions.ShowText = True
msiOptions.Padding = New Padding(5)
msiOptions.BorderWidth = 1

Using msiOptionsStream As New FileStream(Path.Combine(outDir, "barcode_symbology_msi_plessey.png"), FileMode.Create, FileAccess.Write)
  Using msiOptionsGenerator As New BarcodeGenerator(msiOptions)
    msiOptionsGenerator.Export("1234567", msiOptionsStream, DXImageFormat.Png)
  End Using
End Using

Configure Barcode Settings (Fluent API)

Use the CodeMSIOptionsBuilder class to configure MSI barcode settings with Fluent API.

The following code snippet creates an MSI barcode and customizes its options:

C#

using DevExpress.Docs.Barcode;
using DevExpress.Drawing;
using System.Drawing;

var msiOptions = CodeMSIOptionsBuilder.Create()
    .WithShowText(true)
    .WithPadding(5)
    .WithBorderWidth(1)
    .Build();

using var msiOptionsStream = new FileStream(Path.Combine(outDir, "barcode_symbology_msi.png"), FileMode.Create, FileAccess.Write);
using var msiOptionsGenerator = new BarcodeGenerator(msiOptions);

msiOptionsGenerator.Export("1234567", msiOptionsStream, DXImageFormat.Png);

VB.NET

Imports DevExpress.Docs.Barcode
Imports DevExpress.Drawing
Imports System.Drawing

Dim msiOptions = CodeMSIOptionsBuilder.Create() _
    .WithShowText(True) _
    .WithPadding(5) _
    .WithBorderWidth(1) _
    .Build()

Using msiOptionsStream = New FileStream(Path.Combine(outDir, "barcode_symbology_msi.png"), FileMode.Create, FileAccess.Write)
  Using msiOptionsGenerator = New BarcodeGenerator(msiOptions)
    msiOptionsGenerator.Export("1234567", msiOptionsStream, DXImageFormat.Png)
  End Using
End Using

Symbology-Specific Options

Property	Description
Checksum	Gets or sets the checksum type for an MSI barcode. The BarcodeGenerator supports only the Mod 10 (Luhn) checksum algorithm.