C#程序对本地摄像头的调用程序

xmlns:UICamera="clr-namespace:UICamera;assembly=UICameraAssembly"　　　　---相关dll调用
........
<UICamera:CapPlayer x:Name="webcamPlayer" Stretch="Fill" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"
Device="{Binding  Path=SelectedWebcam}" Rotation="{Binding Path=WebcamRotation}">
<UICamera:CapPlayer.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleX="-1" ScaleY="1" />
<TranslateTransform X="{Binding Path=ActualWidth,ElementName=webcamPlayer}" Y="0" />
</TransformGroup>
</UICamera:CapPlayer.RenderTransform>
</UICamera:CapPlayer>

_MakePictureCommand = new Command_Main(ExecuteMakePicture, CanExecuteMakePicture);

SelectedWebcamMonikerString = CapDevice.DeviceMonikers.Length > 0 ? CapDevice.DeviceMonikers[0].MonikerString : "";
SelectedWebcam = new CapDevice("");

SelectedWebcam.MonikerString = SelectedWebcamMonikerString;