LEADTOOLS Multimedia (Leadtools.Multimedia assembly)
LEAD Technologies, Inc

Count Property (VideoFormats)

Example 





Gets the number of items contained in the collection.
Syntax
public int Count {get;}
'Declaration
 
Public ReadOnly Property Count As Integer
'Usage
 
Dim instance As VideoFormats
Dim value As Integer
 
value = instance.Count
public int Count {get;}
 get_Count(); 
public:
property int Count {
   int get();
}

Property Value

The number of items contained in the collection; or 0 if the collection is empty.
Remarks
Gets the number of items contained in the collection.
Example
Copy CodeCopy Code  
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _result As Boolean = False
Public Sub CountResetExample()
   Try
      ' reference the form capture control and it's video formats
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
      Dim formats As VideoFormats = capturectrl.VideoCaptureFormats

      ' get count before setting device
      Dim n As Integer = formats.Count

      ' set a video device first, you should use your video device name here
      If capturectrl.VideoDevices("USB") Is Nothing Then
         Throw New Exception("No USB video device available")
      End If

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

      ' get count after setting device
      Dim m As Integer = formats.Count

      ' reset the collection
      formats.Reset()

      ' set out result to what we expect 
      _result = (m <> n)
   Catch e1 As Exception
      _result = False
   End Try
End Sub
public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void CountResetExample()
{
   try
   {
      // reference the form capture control and its video formats
      CaptureCtrl capturectrl = _form.CaptureCtrl;
      VideoFormats formats = capturectrl.VideoCaptureFormats;

      // get count before setting device
      int n = formats.Count;

      // set a video device first.  use your video device's name here
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

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

      // get count after setting device
      int m = formats.Count;

      // reset the collection
      formats.Reset();

      // set out result to what we expect 
      _result = (m != n);
   }
   catch (Exception)
   {
      _result = false;
   }
}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

VideoFormats Class
VideoFormats Members

 

 


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Leadtools.Multimedia requires a Multimedia or Multimedia Suite license and unlock key. For more information, refer to: LEADTOOLS Toolkit Features