Determines the index of a specific Device item in the list.
item
The Device item to locate in the list.
>-1 | The zero-based index of the found item. |
-1 | The item was not found. |
This method uses Find method of the underlying item collection to locate the desired item.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void IndexContainsExample()
{
// reference the capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
try
{
// 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;
// reference the video devices object
Devices devices = capturectrl.VideoDevices;
// check the index of a USB video device
int i = devices.IndexOf("USB");
Device dev = null;
if (i > -1)
// access the input via the collection indexer
dev = devices[i];
// check if the collection contains this input
// (it should we just got it with IndexOf above)
if (devices.Contains(dev))
{
// set the result to what we expect
_result = true;
}
}
catch (Exception)
{
_result = false;
}
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub IndexContainsExample()
' reference the capture control
Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
Try
' 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
' reference the video devices object
Dim devices As Devices = capturectrl.VideoDevices
' check the index of a USB video device
Dim i As Integer = devices.IndexOf("USB")
Dim dev As Device = Nothing
If i > -1 Then
' access the input via the collection indexer
dev = devices(i)
End If
' check if the collection contains this input
' (it should we just got it with IndexOf above)
If devices.Contains(dev) Then
' set the result to what we expect
_result = True
End If
Catch e1 As Exception
_result = False
End Try
End Sub
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