我一直在测试并寻求帮助，但无法解决此问题：
在 C# 和 emgu 中，我无法运行这个最简单的代码：
... //**after these 3 dots HERE I GOT THE FIRST WARNING :a namespace cannot directly contain members such as fields or methods**
//Create an image of 400x200 of Blue color
using (Image<Bgr, Byte> img = new Image<Bgr, byte>(400, 200, new Bgr(255, 0, 0)))
{
//Create the font
MCvFont f = new MCvFont(CvEnum.FONT.CV_FONT_HERSHEY_COMPLEX, 1.0, 1.0);
//Draw "Hello, world." on the image using the specific font
img.Draw("Hello, world", ref f, new Point(10, 80), new Bgr(0, 255, 0));
//Show the image using ImageViewer from Emgu.CV.UI
ImageViewer.Show(img, "Test Window");
}
我收到这些错误：
error CS0116: A namespace cannot directly contain members such as fields or methods
error CS1518: Expected class, delegate, enum, interface, or struct
PS： emgu cv 已正确安装，在 C# 中此代码（更复杂）运行完美：
namespace CameraCapture
{
public partial class CameraCapture : Form
{
//declaring global variables
private Capture capture; //takes images from camera as image frames
private bool captureInProgress;
public CameraCapture()
{
InitializeComponent();
}
//------------------------------------------------------------------------------//
//Process Frame() below is our user defined function in which we will create an EmguCv
//type image called ImageFrame. capture a frame from camera and allocate it to our
//ImageFrame. then show this image in ourEmguCV imageBox
//------------------------------------------------------------------------------//
private void ProcessFrame(object sender, EventArgs arg)
{
Image<Bgr, Byte> ImageFrame = capture.QueryFrame();
CamImageBox.Image = ImageFrame;
}
//btnStart_Click() function is the one that handles our "Start!" button' click
//event. it creates a new capture object if its not created already. e.g at first time
//starting. once the capture is created, it checks if the capture is still in progress,
//if so the
private void btnStart_Click(object sender, EventArgs e)
{
#region if capture is not created, create it now
if (capture == null)
{
try
{
capture = new Capture();
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
}
#endregion
if (capture != null)
{
if (captureInProgress)
{ //if camera is getting frames then stop the capture and set button Text
// "Start" for resuming capture
btnStart.Text = "Start!"; //
Application.Idle -= ProcessFrame;
}
else
{
//if camera is NOT getting frames then start the capture and set button
// Text to "Stop" for pausing capture
btnStart.Text = "Stop";
Application.Idle += ProcessFrame;
}
captureInProgress = !captureInProgress;
}
}
private void ReleaseData()
{
if (capture != null)
capture.Dispose();
}
private void CameraCapture_Load(object sender, EventArgs e)
{
}
}
}
感谢您的帮助！