--- layout: default-layout title: Release Notes v9.x - Dynamsoft Barcode Reader SDK .NET Edition description: Release notes for Dynamsoft Barcode Reader SDK .NET Edition v9.x, including security updates, decoding accuracy improvements, and bug fixes across the v9 releases. keywords: release notes, .net needGenerateH3Content: false --- # Release Notes for .NET Edition - 9.x ## 9.6.61 (03/10/2026) ### Security Updates - Updated third-party libraries to incorporate the latest security fixes. ## 9.6.60 (12/23/2025) ### Security Updates - Updated third-party libraries to incorporate the latest security fixes. ## 9.6.40 (03/14/2024) ### Improved - Updated the security of the DynamsoftBarcodeReader library and other corresponding dependent libraries. - Improved the multi-thread processing logic of concurrent instance licenses. - Improved the barcode decoding performance: - Improved the accuracy when decoding OneD & PDF417 barcodes. - Improved the readability of dense DataMatrix codes. ### Fixed - Fixed crash bugs in the barcode decoding algorithm. - Fixed a bug where the location of the barcode result(s) might be incorrect. ### Changed - Changed the error message of error `DBRERR_PDF_DLL_MISSING` from "The PDF DLL is missing" to "The PDF library could not be loaded". - Added a new error code `DMERR_LICENSE_CACHE_USED`, which is returned when failing to connect to the license server but a valid license cache is available. Error codes `DMERR_FAILED_TO_REACH_DLS` and `DMERR_LICENSE_SYNC_FAILED` are no longer returned on this scenario. ## 9.6.30 (08/29/2023) ### New - Added a new method `GetInstancePoolStatus` and class `InstancePoolStatus` to provide a real-time view of how the concurrent instance licenses are being utilized. This applies only if you are using a concurrent instance license. ### Improved - Optimized the concurrent instance management and license usage statistics when using a concurrent instance license. - Extended the availability of methods `GetInstance` and `Recycle`, making them accessible to all licensing modes. - Implemented additional checkpoints to ensure timely timeout and termination. ### Fixed - Fixed a bug where barcode results varied depending on the operating system being used. - Fixed a crash bug when initializing a license with a segmented license string. - Fixed some bugs related to the barcode format settings when they are defined in the `RegionDefinition` object of the template. ## 9.6.20 (03/16/2023) ### Fixed - Fixed a bug where the methods InitLicense and GetInstance may not work as expected when using concurrent instance license. - Fixed a bug where license authorization may fail when the main license server is not available. - Other small fixes and tweaks. ## 9.6.10 (01/10/2023) ### New - Added a new method `SetLicenseCachePath` in the `BarcodeReader` class to support customizing the license cache saving path. - Add a new method `GetDeviceUUID` in the `BarcodeReader` class to support getting device UUID for license activating. - Added error code `DMERR_LICENSE_BUFFER_FAILED` to the potential error list of the license activation methods and decode methods. The error code is returned when the directory of the license cache is inaccessible. ### Improved - Improved the performance of Direct Part Marking (DPM) barcode decoding. - Improved the performance of GS1 Databar barcode decoding. ### Fixed - Fixed a crash bug when using a online license key on ARM64 environment. - Fixed a crash bug when using a online license key on the AWS lambda environment. - Fixed a bug that some OneD barcodes without start & stop characters are not decoded when parameter `RequireStartStopChars` is set to 0. - Other small fixes and tweaks. ## 9.6.0 (11/29/2022) ### Version Highlights - **Image orientation** handling is supported by a new feature. With the new feature, you can: - Get a **TranformationMatrix** along with the barcode location result. - Implement coordinates transformation on the barcode location result with the **TransformationMatrix**. - **DotCode** decoding is improved by optimizing the localization of DotCodes that are close to one another. - **EAN8 barcode** decoding is improved by honing the accuracy of localization algorithms. - **QR code** localizing is improved by reducing the mis-assemble rate of the finder patterns when using the localization mode LM_CONNECTED_BLOCK or LM_SCAN_DIRECTLY, which are designed for speed. The mis-assembling only occurs when there exist dense QR codes on the same image. - **Mirrored rectangular DataMatrix barcode** is supported by implementing `MirrorMode` when localizing the barcodes. - Deformed barcode decoding is improved by extending the supported modes and mode arguments of `DeformationResistingModes`. ### Edition Highlights - Added duplicate barcode filter feature in video mode. You can implement duplicate filter to ignore duplicate barcodes for a period. ### Changelog #### New - Added a property `Orientation` to class `FrameDecodingParameters` to set the orientation information of the video frame. - Added `Orientation` to class ImageData to set the orientation information. - Enabled decoding methods `DecodeFile()`, `DecodeFileinMemory()` and `DecodeBase64String()` to read EXIF data of the given image so that the library can obtain the orientation information of the image file. - Overloaded method `DecodeBuffer()` with a new parameter `Orientation` to set the orientation information of the image data. - Added a property `TransformationMatrix` to class `LocalizationResult` so that the library can output a transformation matrix for transforming the localization coordinates to image's natural orientation. - Added a method `TransformCoordinates()` to support transforming the coordinates of a point based on a given transformation matrix. - Added a property `DuplicateForgetTime` to class `FrameDecodingParameters` to set the time period used to filter out duplicate results found in frames. - Added a method `SetUniqueBarcodeCallback()` to set callback function to obtain unique barcode result. - Added properties `HasLeftRowIndicator` and `HasRightRowIndicator` to class `PDF417Details` to return whether the left and right row indicator of the PDF417 barcode is detected. - Added a member `BF2_ALL` to enumeration `BarcodeFormatIds_2` to support setting all barcode formats in BarcodeFormat group 2 with one enumeration. - Extended the features of parameter `DeformationResistingModes`: - Extended the valid mode arguments of `DRM_BROAD_WARP`, `DRM_LOCAL_REFERENCE` and `DRM_DEWRINKLE` with two new arguments: `GrayscaleEnhancementMode` and `BinarizationMode`. - Supported mode `DRM_AUTO`. #### Improved - Improved the accuracy when processing multiple QR codes. - Improved the processing speed by excluding incorrectly located barcode zones before decoding. - Improved the creation, destruction and acquisition logic of concurrent instances. - Improved the accuracy of EAN8 localization result(s). - Improved the localization of mirrored DataMatrix barcode by implementing `MirrorMode`. #### Fixed - Fixed a bug that DotCodes might not be decoded when they are densely arranged. - Fixed a crash bug when trying to output a template which included `BarcodeTextRegExPattern`. - Other small fixes and tweaks. ## 9.4.0 (08/30/2022) ### Highlights - **DotCode** decoding has been improved by optimizing the localization and decoding algorithm. - **Stacked**, **skewed** or **perspective distorted OneD barcode** decoding has been improved. ### Changelog #### New - Added an argument `IsOneDStacked` to `LM_SCAN_DIRECTLY` to process stacked OneD barcodes. - Added a parameter `PatchCodeSearchingMargins` to specify the searching area of PatchCode. - Added the supported data format of `FormatSpecification.PartitionModes` to enhance the readability of the parameters. Users can use a list of enumeration names to specify the `PartitionModes`. #### Improved - Improved the localization mode `LM_LINES` to better support skewed and perspective OneD barcodes. - Enhanced tamper resistance of the license keys so that any change to the license string makes it invalid. #### Deprecated - Deprecated the attribute `BarcodeFormatString_2` of `TextResult`, `ExtendedResult` and `LocalizationResult`. All the barcode format strings will be returned by the attribute `BarcodeFormatString`. ## 9.2.0 (06/07/2022) ### Highlights - Barcode boundary-seeking algorithm is refactored to improve stability. - Pharmacode decoding is optimized to improve accuracy. - The function of device-alias is added to allow users to give each device a readable name. For end-users and administrators, this makes it more friendly to distinguish between devices about license usage statistics. ### Changelog #### New - Added a new method `SetDeviceFriendlyName` to set a human-readable name that identifies the device. ## 9.0.0 (03/15/2022) ### Highlights - Simplified the license activation steps. Different license activation APIs are integrated into `initLicense` method. - Added support for **Pharmacode**. - Added support for **Code 11**, a 1D format. - Deformation resisting modes `DRM_BROAD_WARP`, `DRM_LOCAL_REFERENCE` and `DRM_DEWRINKLE` are optimized and detached from `DRM_GENERAL`. Users can specify a more effective deformation resisting mode when processing **QRCode** and **DataMatrix codes**. - Optimized the confidence scoring system for **PDF417 codes**. ### Changelog #### New - Added `BF_CODE_11` under Enumeration `EnumBarcodeFormat` to specify newly supported barcode format, Code 11. - Added `BF2_PHARMACODE_ONE_TRACK`, `BF2_PHARMACODE_TWO_TRACK` and `BF2_PHARMACODE` under Enumeration `EnumBarcodeFormat_2` to specify newly supported barcode format, Pharmacode. - Added a new error code `DBRERR_PHARMACODE_LICENSE_INVALID` which will be returned when the license of Pharmacode is invalid. - Added `DRM_BROAD_WARP`, `DRM_LOCAL_REFERENCE` and `DRM_DEWRINKLE` under Enumeration `EnumDeformationResistingMode` to apply new deformation resisting modes. - Added a parameter `FormatSpecification.PartitionModes` - Added a parameter `FormatSpecification.VerifyCheckDigit` - Added an Argument `ConfidenceThreshold` to the `LocalizationModes` mode arguments. - Added a method `InitLicense` to initialize license key and activate the SDK. #### Changed - Changed value of BF_ONED under Enumeration `EnumBarcodeFormat` to 0x003007FF to have BF_CODE_11 combined. - Changed value of BF_ALL under Enumeration `EnumBarcodeFormat` to 0xFE3FFFFF to have BF_CODE_11 combined. - Changed the behaviour of `DeformationResistingMode` DRM_GENERAL which now only applies basic process to resist deformation. - Changed the return value of the method `GetIdleInstancesCount` from 0 to -1 when the available count needs to be updated from server by calling InitLicense. #### Fixed - Fixed a bug that might cause a crash when using multiple threads for barcode decoding. - Fixed a bug that Function Code 1 (FNC1) character would not return if it was in the first position of GS1-128 codes. - Other small fixes and tweaks. #### Deprecated The following items are now deprecated. They still work in this version but could be removed in the near future. - Method `InitLicenseFromServer` - Method `InitLicenseFromLicenseContent` - Method `OutputLicenseToString` - Method `InitDLSConnectionParameters` - Method `InitLicenseFromDLS` - Method `BarcodeReader(string productKey)` - Method `BarcodeReader(string modulePath, string productKey)` - Attribute `ProductKey` - Enumeration `EnumDMChargeWay` - Enumeration `EnumDMDeploymentType` - Enumeration `EnumDMLicenseModule` - Enumeration `EnumDMUUIDGenerationMethod` - Enumeration `EnumProduct`