Selected Property (Device)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Property Selected As Boolean

'Usage
 
Dim instance As Device
Dim value As Boolean
 
instance.Selected = value
 
value = instance.Selected

public bool Selected {get; set;}

public:
property bool Selected {
   bool get();
   void set (    bool value);
}

Property Value

true if the device is currently selected; otherwise, it is false.

Assignment can raise an error exception.

For more information, refer to the Error Codes.

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub DevicesExample()
   Dim inputName, inputFriendlyName As String
   Dim selection As Integer

   ' reference the capture control
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   ' select a video device, use your device name here instead of Analog
   If capturectrl.VideoDevices("Analog") Is Nothing Then
      Throw New Exception("No Analog video tuner device available")
   End If

   capturectrl.VideoDevices("Analog").Selected = True

   ' get the audio inputs object
   Dim devices As Devices = capturectrl.VideoDevices

   Try
      ' select an input by name if possible
      If Not devices("USB") Is Nothing Then
         devices("USB").Selected = True
      End If

      ' get the current selected input
      selection = devices.Selection

      For Each dev As Device In devices
         ' get the inputs properties
         inputName = dev.Name
         inputFriendlyName = dev.FriendlyName

         ' if we found a digital video capture device
         If inputFriendlyName.Contains("Digital") Then
            ' select it and break
            dev.Selected = True
            Exit For
         End If
      Next dev

      ' set the result to what we expect
      _result = (selection <> devices.Selection)

   Catch e1 As Exception
      _result = False
   End Try
End Sub

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void DevicesExample()
{
   string inputName, inputFriendlyName;
   int selection;

   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   // select a video device, use your device name here instead of Analog
   if (capturectrl.VideoDevices["Analog"] == null)
      throw new Exception("No Analog video tuner device available");

   capturectrl.VideoDevices["Analog"].Selected = true;

   // get the audio inputs object
   Devices devices = capturectrl.VideoDevices;

   try
   {
      // select an input by name if possible
      if (devices["USB"] != null)
         devices["USB"].Selected = true;

      // get the current selected input
      selection = devices.Selection;

      foreach (Device dev in devices)
      {
         // get the inputs properties
         inputName = dev.Name;
         inputFriendlyName = dev.FriendlyName;

         // if we found a digital video capture device
         if (inputFriendlyName.Contains("Digital"))
         {
            // select it and break
            dev.Selected = true;
            break;
         }
      }

      // set the result to what we expect
      _result = (selection != devices.Selection);

   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

Device Class
Device Members