Open() Method (DeviceManager)

In This Topic

Opens the TWAIN device manager.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration

Public Sub Open()

public void Open()

public: void Open()

public:
void Open()

Exceptions

Exception	Description
TwainDeviceManagerException	Thrown if TWAIN device manager is not found - TWAIN_32.DLL, TWAINDSM.DLL or libtwaindsm.so file is not found TWAIN device manager is not loaded - TWAIN_32.DLL cannot be loaded in 64-bit system, recompile the project in x86 mode TWAIN device manager is not initialized parent window is not found - run Open method in the Loaded handler of the form
System.ObjectDisposedException	Thrown if TWAIN device manager is disposed.
DebuggerException	Thrown if .NET debugger is used and the function evaluation requires all threads to run.

Remarks

Only ApplicationProductName property can be used before this method. All other properties and methods must be used only after execution of this method.

Example

Please see example here: DeviceManager.

Requirements

Target Platforms: .NET 8, .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

DeviceManager Class
DeviceManager Members

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