C#怎么打开笔记本的相机,并且显示出来
时间: 2024-09-21 21:11:44 浏览: 30
在C#中,要打开笔记本电脑的摄像头并显示视频流,你可以使用Windows Presentation Foundation (WPF) 或 Windows Forms库,以及`MediaCapture`类。以下是基本步骤:
首先,确保你的项目引用了以下命名空间:
```csharp
using System.IO.Ports;
using MediaFoundation;
using Windows.Media.Capture;
using Windows.Storage.Streams;
```
然后,创建一个`MediaCapture`实例:
```csharp
private async Task InitializeCamera()
{
_mediaCapture = new MediaCapture();
await _mediaCapture.InitializeAsync(new MediaCaptureInitializationSettings());
}
```
接着,打开摄像头:
```csharp
await _mediaCapture.OpenAsync();
```
为了实时预览视频,你需要创建一个`VisualBrush`并将捕获到的流设置为它的源:
```csharp
private async void StartPreview()
{
var preview流转换器 = await _mediaCapture.CreateVideoPreviewRendererAsync();
var videoSource = _mediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview);
var pixelBufferAdapter = new StreamingRandomAccessStreamReference(videoSource.Stream.AsRandomAccessStream());
preview流转换器.SetSource(pixelBufferAdapter);
}
```
最后,在关闭时记得释放资源:
```csharp
public void StopCamera()
{
if (_mediaCapture != null)
{
_mediaCapture.Dispose();
_mediaCapture = null;
}
}
```