在pictureBox图像上绘制坐标

Question

我正在尝试绘制图片框，我的代码如下：

List<IntPoint> edgePoints;
List<IntPoint> corners;

AForge.Imaging.Blob[] blobs = blobCounter.GetObjectsInformation();
Graphics g = Graphics.FromImage(pictureBox2.Image);
Pen bluePen = new Pen(Color.Blue, 5);

double[] blobAdjustedSize = new double[blobs.Length];
for (int i = 0, n = blobs.Length; i < n; i++)
{
    edgePoints = blobCounter.GetBlobsEdgePoints(blobs[i]);
    corners = PointsCloud.FindQuadrilateralCorners(edgePoints);

    g.DrawPolygon(bluePen, corners); // **UNDERLINE**
}        

我收到了一个错误。 g.DrawPolygon(bluePen, corners)有下划线。

错误是：

  

System.Drawing.Graphics.DrawPolygon（System.Drawing.Pen，System.Drawing.Point []）的最佳重载方法匹配“有一些无效的参数

Answer 1

它期待Array of Points而不是列表，将角定义为Array或添加

using System.Linq;

到文件顶部，然后将行更改为

g.DrawPolygon( bluePen, corners.ToArray());