Atalasoft DotImage 11.4
Atalasoft DotImage Class Library
Atalasoft.Twain
Device Class
Device Methods
Acquire Method
CanOpen Method
ClearBuffers Method
Close Method
Disable Method
Dispose Method
Enable Method
EnableCamera Method
Finalize Method
GetConditionCode Method
GetFrames Method
GetQueryOperations Method
GetSupportedBarCodes Method
GetSupportedBitDepthReductionModes Method
GetSupportedBitDepths Method
GetSupportedBrightnessValues Method
GetSupportedCapabilities Method
GetSupportedCompressionModes Method
GetSupportedContrastValues Method
GetSupportedExposureTimes Method
GetSupportedExtendedCapabilities Method
GetSupportedFlashModes Method
GetSupportedFrameSizes Method
GetSupportedHalftones Method
GetSupportedHighlightValues Method
GetSupportedIccProfileOptions Method
GetSupportedImageFilters Method
GetSupportedImageFormats Method
GetSupportedJobControls Method
GetSupportedJpegPixelTypes Method
GetSupportedJpegQualityValues Method
GetSupportedLanguageTypes Method
GetSupportedLightPathModes Method
GetSupportedLightSourceModes Method
GetSupportedMaxBatchBuffers Method
GetSupportedNativeResolutions Method
GetSupportedNoiseFilterModes Method
GetSupportedOrientationModes Method
GetSupportedOverscanModes Method
GetSupportedPatchCodes Method
GetSupportedPixelTypes Method
GetSupportedPowerSupplies Method
GetSupportedPrinterModes Method
GetSupportedPrinters Method
GetSupportedResolutions Method
GetSupportedRotations Method
GetSupportedScalingValues Method
GetSupportedShadowValues Method
GetSupportedThresholdValues Method
GetSupportedTransferMethods Method
GetSupportedUnitTypes Method
GetSupportedZoomFactors Method
LoadParameters Method
LoadXmlParameters Method
Open Method
PreFilterMessage Method
QueryCapability Method
SaveParameters Method
SaveXmlParameters Method
SetCameraPixelOrder Method
SetExtendedCapabilities Method
SetExtendedImageInfoOptions Method
SetFrames Method
SetImageDataset Method
SetImprinterEndorser Method
ShowUserInterface Method
StartAutomaticCapture Method
ToString Method
TryOpen Method
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DeviceTryOpen Method

This method will attempt to open a connection to the device and will return true if it was successful. It's preferred to use this method instead of the Open method.

The Close method must be called when you are finished using the device.

Namespace:  Atalasoft.Twain
Assembly:  Atalasoft.DotTwain (in Atalasoft.DotTwain.dll) Version: 11.4.0.9.0.377 (.NET 4.5.2, x86)
Syntax
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public bool TryOpen()

Return Value

Type: Boolean
True if the device connection was a success.
Remarks
This method will suppress exceptions and instead return true or false to indicate if the device was already open or has been successfully opened.
Examples
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if (this.device.TryOpen())
{
    this.device.Resolution = new TwainResolution(200, 200);
    this.device.HideInterface = true;
    this.device.Acquire();
}
See Also