<Window x:Class="Fish.AccountBook.View.Test.CameraWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="CameraWindow" Height="200" Width="300"

        xmlns:WPFMediaKit="clr-namespace:WPFMediaKit.DirectShow.Controls;assembly=WPFMediaKit">

    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition Height="30" />

            <RowDefinition Height="auto" />

        </Grid.RowDefinitions>

        <StackPanel Orientation="Horizontal">

            <Button Name="button1" Content="截图" Height="23"  Width="75" Click="button1_Click" />

        </StackPanel>

        <WPFMediaKit:VideoCaptureElement x:Name="m_VideoCaptureElement" Grid.Row="1" />

    </Grid>

</Window>

    public partial class CameraWindow : Window

    {

        public CameraWindow()

        {

            InitializeComponent();

            string[] inputNames = MultimediaUtil.VideoInputNames;

            m_VideoCaptureElement.VideoCaptureSource = inputNames[0];

        }

        private void button1_Click(object sender, RoutedEventArgs e)

        {

            RenderTargetBitmap bmp = new RenderTargetBitmap((int)m_VideoCaptureElement.ActualWidth, (int)m_VideoCaptureElement.ActualHeight, 96, 96, PixelFormats.Rgb24);

            bmp.Render(m_VideoCaptureElement);

            BitmapEncoder encoder = new JpegBitmapEncoder();

            encoder.Frames.Add(BitmapFrame.Create(bmp));

            string now = DateTime.Now.Year + "" + DateTime.Now.Month + "" + DateTime.Now.Day + "" + DateTime.Now.Hour + "" + DateTime.Now.Minute + "" + DateTime.Now.Second;

            string filename = "D:\\" + now + "pic.jpg";

            FileStream fstream = new FileStream(filename, FileMode.Create);

            encoder.Save(fstream);

            fstream.Close();

        }

    }