EnumDevices Method

Summary
Enumerates all available system WIA devices connected to the user's machine.
Syntax
C#
C++
public void EnumDevices() 
vb[VB Syntax] 
  
Public Sub EnumDevices() 
public: 
void EnumDevices();  
Remarks

This function will enumerate all available system WIA devices connected to the user's machine.

Information about each device found, like the device ID, device name and device description, can be retrieved by using the EnumDevicesEvent event. To do so, add this event when enumerating the available WIA devices. To cancel the enumeration process add this event and set the Cancel member of the WiaEnumDevicesEventArgs to true.

For more information, refer to Managing WIA Sources.

Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Wia; 
 
 
       
public void EnumDevicesExample(IntPtr parent) 
{ 
   if (!WiaSession.IsAvailable(WiaVersion.Version1)) 
   { 
      Console.WriteLine("WIA version 1.0 not installed."); 
      return; 
   } 
 
   WiaSession wiaSession = new WiaSession(); 
   wiaSession.Startup(WiaVersion.Version1); 
 
   DialogResult res = wiaSession.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault); 
   if (res != DialogResult.OK) 
   { 
      Console.WriteLine("Error selecting WIA device."); 
      wiaSession.Shutdown(); 
      return; 
   } 
 
   wiaSession.EnumDevicesEvent += new EventHandler<WiaEnumDevicesEventArgs>(wiaSession_EnumDevicesEvent); 
 
   Console.WriteLine("Available WIA Devices:\n"); 
   wiaSession.EnumDevices(); 
 
   wiaSession.EnumDevicesEvent -= new EventHandler<WiaEnumDevicesEventArgs>(wiaSession_EnumDevicesEvent); 
 
   wiaSession.Shutdown(); 
} 
 
void wiaSession_EnumDevicesEvent(object sender, WiaEnumDevicesEventArgs e) 
{ 
   string strMsg = string.Empty; 
 
   // print out some information about each device found into the console window. 
   strMsg = string.Format("\tDevice Name: {0}\n\tDevice Id: {1}\n\tDevice Description: {2}\n\n", e.DeviceName, e.DeviceID, e.DeviceDesc); 
   Console.WriteLine(strMsg); 
} 
Requirements

Target Platforms

Help Version 22.0.2022.4.4
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Leadtools.Wia Assembly

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.