C#调用摄像头拍照

需要用到的dll: WPFMediaKit.dll

创建一个WPF应用

首先引入WPFMediaKit.dll ，然后在xaml文件中如下使用wpfmedia:VideoCaptureElement 控件，注意需要先引用

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

按钮点击事件代码如下（将图片保存到D盘 以当前时间命名）：

private void btnCapture_Click(object sender, RoutedEventArgs e)

{

DateTime dt =DateTime.Now;

RenderTargetBitmap bmp = new RenderTargetBitmap((int)vce.ActualWidth, (int)vce.ActualHeight,96, 96, PixelFormats.Default);

bmp.Render(vce);

BitmapEncoder encoder = new JpegBitmapEncoder();

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

using (MemoryStream ms = new MemoryStream())

{

encoder.Save(ms);

byte[] captureData = ms.ToArray();

File.WriteAllBytes("d:/"+

dt.Year.ToString()+

dt.Month.ToString() +

dt.Day.ToString() +

dt.Hour.ToString() +

dt.Minute.ToString() +

dt.Second.ToString() +

".jpg", captureData);

}

vce.Pause();

MessageBox.Show("照片已保存");

vce.VideoCaptureSource="";

}

private void btn_Click(object sender, RoutedEventArgs e)

{

string[] ss = MultimediaUtil.VideoInputNames;

foreach (string s in ss)

{

vce.VideoCaptureSource = s;

}

}

效果图: