SetVersion Method

C#
Visual Basic
Objective-C
Java
C++

public static void SetVersion( 
   TwainVersion twainVersion
)

'Declaration
 
Public Shared Sub SetVersion( _
   ByVal twainVersion As TwainVersion _
)

'Usage
 
Dim twainVersion As TwainVersion
 
TwainSession.SetVersion(twainVersion)

public:
static void SetVersion( 
   TwainVersion twainVersion
)

Parameters

twainVersion: The twain version to set, see TwainVersion for list of available versions.

This method overrides the default Twain (version 2) used for scanning. This allows the Twain version to be changed without the need to rename of delete any of the Twain version DLLs from the system directory. The Twain version 1 DLL name is Twain_32.dll and version 2 DLL name is TWAINDSM.DLL, if this method is not called the engine will keep the default behavior and look for Twain version 2 first. If version 2 does not exist it will then look for Twain version1.
If this method is called and returns SUCCESS there is no need to call Leadtools.Twain.TwainSession.IsAvailable since this internally calls it.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Twain

Public Sub SetVersionExample(ByVal twainVersion As TwainVersion)
   Dim session As TwainSession = New TwainSession()

   Try
      TwainSession.SetVersion(twainVersion)
      session.Startup(Nothing, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try

   session.Shutdown()
End Sub

using Leadtools;
using Leadtools.Twain;

public void SetVersionExample(TwainVersion twainVersion)
{
   TwainSession session = new TwainSession();

   try
   {
      TwainSession.SetVersion(twainVersion);
      session.Startup(null, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);
   }
   catch (Exception ex)
   {
      MessageBox.Show(ex.Message);
   }

   session.Shutdown();
}

Target Platforms

Reference

TwainSession Class
TwainSession Members
IsAvailable Method