Leadtools.Multimedia Namespace > Compressors Class : Item Property |
Overload | Description |
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Item(Int32) | Gets the Compressor item at the specified index. |
Item(String) | Gets the Compressor item with the specified name. |
Exception | Description |
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System.ArgumentOutOfRangeException | The exception that is thrown when the value of an argument is outside the allowable range of values as defined by the invoked method. |
myCollection[index]
. The C# language uses the this keyword to define the indexers instead of implementing the Item property. Visual Basic implements Item as a default property, which provides the same indexing functionality.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 compressors object Dim compressors As Compressors = capturectrl.VideoCompressors ' check the index of a video compressor Dim i As Integer = compressors.IndexOf(capturectrl.VideoCompressors.Mpeg2) Dim cmp As Compressor = Nothing If i > -1 Then ' access the compressor via the collection indexer cmp = compressors(i) End If ' check if the collection contains this input ' (it should we just got it with IndexOf above) If compressors.Contains(cmp) Then ' set the result to what we expect _result = True End If Catch e1 As Exception _result = False End Try End Sub
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 compressors object Compressors compressors = capturectrl.VideoCompressors; // check the index of a video compressor int i = compressors.IndexOf(capturectrl.VideoCompressors.Mpeg2); Compressor cmp = null; if (i > -1) // access the compressor via the collection indexer cmp = compressors[i]; // check whether the collection contains this input // (it should we just got it with IndexOf above) if (compressors.Contains(cmp)) { // set the result to what we expect _result = true; } } catch (Exception) { _result = false; } }
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