Step Details |
|
| Introduced in Version | 4.0.0 |
| Last Modified in Version | 8.8.0 |
| Location | Integration > QR Code |
The Get QRValue step allows users to retrieve the String value from a QR code.
Prerequisites
This step requires the QR Code module to be installed before it will be available in the toolbox.
Properties
Inputs
| Property | Description | Data Type |
|---|---|---|
| Data | The desired byte data of a QR Code image to retrieve the value from | List of Byte |
Outputs
| Property | Description | Data Type |
|---|---|---|
| Output | The value from the QR Code | String |
Example Inputs and Outputs
| Data | Output |
|---|---|
| frame.png | Free By Frenatery |
| QRSite.gif | http://www.google.com |
| Flowers.png | EXCEPTION MESSAGE |
| Example.txt | EXCEPTION MESSAGE |
| Null | EXCEPTION MESSAGE |
| Empty | EXCEPTION MESSAGE |
Common Errors
Incorrect Parameter Count, Data Not Mapped Correctly
If the Data field is empty, the step will cause an error.
To correct this, ensure that an input mapping is selected and the correct List of Byte data is configured.
Exception Message:
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Get QRValue 1[GetQRValue] in flow [Flow 1]: Incorrect Parmater Count, Data Not Mapped Correctly
---> DecisionsFramework.LoggedException: Incorrect Parmater Count, Data Not Mapped Correctly
---> System.Reflection.TargetParameterCountException: Parameter count mismatch. at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture
at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data)
--- End of inner exception stack trace --- at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data
at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
--- End of inner exception stack trace ---ImageConverter cannot convert from (null)
If the value for the Data field is null, the step will cause an error.
To correct this, ensure that the value entered or mapped is a List of Byte data type.
Exception Message:
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Get QRValue 1[GetQRValue] in flow [Flow 1]: Exception invoking method GetQRValue on class QRCodeSteps
---> DecisionsFramework.LoggedException: Exception invoking method GetQRValue on class QRCodeSteps
---> System.NotSupportedException: ImageConverter cannot convert from (null).
at System.ComponentModel.TypeConverter.GetConvertFromException(Object value
at System.ComponentModel.TypeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value
at System.Drawing.ImageConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value
at System.ComponentModel.TypeConverter.ConvertFrom(Object value
at Decisions.QRCodes.QRCodeSteps.GetQRValue(Byte[] data)
--- End of inner exception stack trace --- at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data
at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
--- End of inner exception stack trace ---Parameter is not valid
If the value for the Data field is not valid QR Code data, the step will cause an error.
To correct this, ensure that the value entered or mapped is a valid QR Code image.
Exception Message:
Exception Stack Trace: DecisionsFramework.Design.Flow.ErrorRunningFlowStep: Error running step Get QRValue 1[GetQRValue] in flow [Flow 1]: Exception invoking method GetQRValue on class QRCodeSteps
---> DecisionsFramework.LoggedException: Exception invoking method GetQRValue on class QRCodeSteps
---> System.ArgumentException: Parameter is not valid. at System.Drawing.Image.LoadGdipImageFromStream(GPStream stream, Boolean useEmbeddedColorManagement
at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData
at System.Drawing.ImageConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value
at System.ComponentModel.TypeConverter.ConvertFrom(Object value
at Decisions.QRCodes.QRCodeSteps.GetQRValue(Byte[] data)
--- End of inner exception stack trace --- at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data
at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
--- End of inner exception stack trace ---Related Information
Documentation:
QR Codes Module
Forum Posts:
Generate QR Codes