Reset Method (CaptureSubTypes)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Sub Reset()

'Usage
 
Dim instance As CaptureSubTypes
 
instance.Reset()

public void Reset()

public:
void Reset();

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.

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

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Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CountResetExample()
   Try
      ' reference the form capture control
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

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

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

      ' reference the video capture subtype collection
      Dim stypes As CaptureSubTypes = capturectrl.VideoCaptureSubTypes

      ' get count of subtypes
      Dim cnt As Integer = stypes.Count

      ' get the current capture subtype before enumeration loop
      Dim before As CaptureSubType = TryCast(stypes.Current, CaptureSubType)

      ' enumerate them and break on master volume
      For Each cs As CaptureSubType In stypes
         If cs.Name = Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_RGB24 Then
            Exit For
         End If
      Next cs

      ' get the current capture subtype now
      Dim now As CaptureSubType = TryCast(stypes.Current, CaptureSubType)

      ' if they are different reset the collection
      If Not now Is before Then
         stypes.Reset()
      End If

      ' set the result to what we expect
      _result = (stypes.Current Is before)
   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 CountResetExample()
{
   try
   {
      // reference the form capture control
      CaptureCtrl capturectrl = _form.CaptureCtrl;

      // set a video device first, you should use your video device name here
      if (capturectrl.VideoDevices["Logitech"] == null)
         throw new Exception("No Logitech video device available");

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

      // reference the video capture subtype collection
      CaptureSubTypes stypes = capturectrl.VideoCaptureSubTypes;

      // get count of subtypes
      int cnt = stypes.Count;

      // get the current capture subtype before enumeration loop
      CaptureSubType before = stypes.Current as CaptureSubType;

      // enumerate them and break on master volume
      foreach (CaptureSubType cs in stypes)
      {
         if (cs.Name == Constants.MEDIASUBTYPE_RGB24)
            break;
      }

      // get the current capture subtype now
      CaptureSubType now = stypes.Current as CaptureSubType;

      // if they are different reset the collection
      if (now != before)
         stypes.Reset();

      // set the result to what we expect
      _result = (stypes.Current == before);
   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

CaptureSubTypes Class
CaptureSubTypes Members