License Methods

Method	Description
`InitLicense`	Initializes license key and activate the SDK.
`IsInstanceValid`	Gets whether the instance is valid when charging by concurrent instances count.
`SetDeviceFriendlyName`	Sets a human-readable name that identifies the device.
`SetMaxConcurrentInstanceCount`	Sets the max concurrent instance count used for current device and process.
`GetIdleInstancesCount`	`Deprecated`
`InitLicenseFromServer`	`Deprecated`
`InitLicenseFromLicenseContent`	`Deprecated`
`OutputLicenseToString`	`Deprecated`
`InitDLSConnectionParameters`	`Deprecated`
`InitLicenseFromDLS`	`Deprecated`
`InitLTSConnectionParameters`	`Deprecated`
`InitLicenseFromLTS`	`Deprecated`

InitLicense

Initializes license key and activate the SDK.

static EnumErrorCode Dynamsoft.DBR.BarcodeReader.InitLicense (string license, out string errorMsg)

Parameters
[in] licenseKey <string> : The license key of Barcode Reader.
[out] errorMsg <string> : The detailed error message.

Return Value
Returns error code (returns DBR_SUCCESS if the function operates successfully).
You can check errorMsg to get detailed error message.

Code Snippet

string errorMsg;
BarcodeReader.InitLicense("YOUR-LICENSE-KEY", out errorMsg);
BarcodeReader reader = new BarcodeReader();
// add further process

IsInstanceValid

Gets whether the instance is valid when charging by concurrent instances count.

int Dynamsoft.DBR.BarcodeReader.IsInstanceValid()

Return Value

Returns an int value indicating whether the instance is valid for running on concurrent instance mode.

0: The instance is not valid for running on concurrent instance mode.
1: The instance is valid for running on concurrent instance mode.

Remarks

This method is meaningful only when using a license charged by concurrent instances count.

SetDeviceFriendlyName

Sets a human-readable name that identifies the device.

static EnumErrorCode Dynamsoft.DBR.BarcodeReader.SetDeviceFriendlyName(string name)

Parameters

[in] name The device alias.

Return Value

Returns error code (returns DBR_SUCCESS if the function operates successfully).

Code Snippet

string errorMsg;
BarcodeReader.SetDeviceFriendlyName("My-PC");
BarcodeReader.InitLicense("YOUR-LICENSE-KEY", out errorMsg);
BarcodeReader reader = new BarcodeReader();
// add further process

SetMaxConcurrentInstanceCount

Sets the max concurrent instance count used for current device and process.

static void Dynamsoft.DBR.BarcodeReader.SetMaxConcurrentInstanceCount(int countForThisDevice, int countForThisProcess)

Parameters

[in] countForThisDevice The maximum number of concurrent instances that the current device can run.

[in] countForThisProcess The maximum number of concurrent instances that the current process can run.

Code Snippet

string errorMsg;
int countForThisDevice = 1; // The count value should be set based on your purchased license count
int countForThisProcess = 1; // The count value should be set based on your purchased license count
BarcodeReader.SetMaxConcurrentInstanceCount(countForThisDevice, countForThisProcess);
BarcodeReader.InitLicense("YOUR-LICENSE-KEY", out errorMsg);
BarcodeReader reader = BarcodeReader.GetInstance();
// If no instance is available right away, the application will wait until one becomes available
if (reader != null)
{
    // Add your code here to call decoding method, process barcode results and so on
    // ...
    // Recycle the instance to make it idle for other concurrent tasks
    reader.Recycle();
}