Code 39 Extended
Code 39 Extended is a linear symbology and supports the encoding of many more characters than standard Code 39.
This symbology is also known as Code 39 Full ASCII.
A sample of this symbology
Symbology Characteristics
The following table gives an overview of the characteristics of the symbology.
| Item | Details |
|---|---|
| Implementation Class | Code39ExtendedSymbology |
| Base Class | Code39Symbology |
Related ValidationRule Class |
Code39ExtendedValidationRule |
| Encodable Characters | All lower 128 ASCII characters. |
| Supports Checksum | Yes. While this symbology is self-checking, the implementation can optionally auto-calculate and insert a check character. This is referred to as Code 39 mod 43. |
| Has Special Start/Stop Characters | Yes. Must start and stop with * characters, but these are automatically appended for you. |
| Fixed Length Requirements | No. The symbology value may be any number of characters. |
Important Members
This symbology has these important members:
| Member | Description |
|---|---|
| AreStartStopCharactersVisible Property | Gets or sets whether the start/stop characters (*) are visible in the displayed value. |
| Background Property | Gets or sets the Brush to use for rendering the background. |
| BarHeight Property | Gets or sets the desired height of the bars. |
| BarWidthRatio Property | Gets or sets the width ratio of wide lines to narrow lines. |
| DisplayName Property | Gets the display name of the symbology. |
| DisplayValue Property | Gets or sets the value that is displayed if ValueDisplayStyle is not None. |
| Foreground Property | Gets or sets the Brush to use for rendering the foreground. |
| IsChecksumEnabled Property | Gets or sets whether the optional checksum should be added. |
| MeasureDesiredSize Method | Measures the desired size of the symbology, based on the specified available size. |
| MinBarHeightWidthRatio Property | Gets or sets the minimum ratio that the height of the bar code must be in relation to its width. |
| QuietZoneThickness Property | Gets or sets the Thickness of the quiet zone. |
| Render Method | Renders the symbology to the specified DrawingContext. |
| ToBitmap Method | Creates a BitmapSource based on the contents of the symbology. |
| ValidateValue Method | Validates that the symbology can parse the specified value. |
| Value Property | Gets or sets the value to encode in the bar code. |
| ValueDisplayStyle Property | Gets or sets a LinearBarCodeValueDisplayStyle that indicates how the value should rendered. |
| ValueIntrusionOffset Property | Gets or sets the distance that the Value text intrudes into the bar code when ValueDisplayStyle is not None. |
Sample XAML
This sample XAML code shows how to create a BarCode using this symbology.
<barCode:BarCode>
<barCode:Code39ExtendedSymbology Value="abc-123" />
</barCode:BarCode>