Reset Method (VideoFormats)

Sets the enumerator to its initial position, which is before the first element in the collection.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Sub Reset()

'Usage
 
Dim instance As VideoFormats
 
instance.Reset()

public void Reset()

public:
void Reset();

Remarks

This enumerator remains valid through the life of the collection. If changes are made to the collection, such as adding, modifying, or deleting elements, the next call to the Reset method will continue to reset the position to -1.

Example

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

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

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

public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void CountResetExample()
{
   try
   {
      // reference the form capture control and it's video formats
      CaptureCtrl capturectrl = _form.CaptureCtrl;
      VideoFormats formats = capturectrl.VideoCaptureFormats;

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

      // set a video device first, you should use your video device 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

Reference

VideoFormats Class
VideoFormats Members