Question

目前我正在使用C＃datagridview绘制一个包含＆gt; 500行和＆gt; 700列的晶圆图。

然而，有一些问题：

性能缓慢。由于我需要调整列宽，我必须循环并单独分配。

for (int i = 0; i < this.dgvCompleteMapGrid.Columns.Count; i++)
{
  this.dgvCompleteMapGrid.Columns[i].Width = 8;
}

我只需要为具有值的单元格绘制单元格边框，因为晶圆图几乎是圆形的。我正在使用cellpainting事件：

 if (e.Value != null) {
        if (e.Value.ToString() == "")
        {
         e.AdvancedBorderStyle.All = DataGridViewAdvancedCellBorderStyle.None;                    
        }
        else
        {                    
            if (e.Value.ToString() == "1")
            {
                e.CellStyle.BackColor = Color.Lime;
            }
            else
            {
                e.CellStyle.BackColor = Color.Red;
            }

            //check if the top border set None for neighbor empty value cell
            if (e.AdvancedBorderStyle.Top.ToString() == "None")
            {

       e.AdvancedBorderStyle.Top = DataGridViewAdvancedCellBorderStyle.Single;
            }   
            //repeat the same for left right and bottom
        }
    }

然而，似乎它会为大多数单元格绘制多个边框副本。

是否建议使用Datagridview？我试图在面板上绘制矩形，性能更差。

Answer 1

这是我的Picturebox，允许像素化调整大小（与插值相比）。例如。类似于放大Microsoft Paint图片。

using System.Windows.Forms;

namespace WireWorld
{
    public class ZoomablePicturebox : PictureBox
    {
        public ZoomablePicturebox()
        {
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            pe.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
            pe.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
            pe.Graphics.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;
            pe.Graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighSpeed;
            base.OnPaint(pe);
        }
    }
}

要生成位图，我使用以下内容：

// Pick width and height for your case
Bitmap MyBitmap = new Bitmap(width, height);
using (var g = Graphics.FromImage(retVal))
    g.Clear(BackColor); // Pick a background fill color
// Draw your points, whatever your loop needs to be and your point definition is
foreach (MyPointDef point in _Points)
{
    MyBitmap.SetPixel(point.X, point.Y, point.Color);
}

然后我在一张面板上放了一个图片框。然后面板提供滚动。我可以按如下方式设置图片和缩放：

canvasPB.SizeMode = PictureBoxSizeMode.Zoom; // Ensures picture is resized as we resize picturebox
canvasPB.Image = MyBitmap;
canvasPB.Height = canvasPB.Image.Height * Zoom; // Zoom is 1, 2, 3, etc, for 1X, 2X, ...
canvasPB.Width = canvasPB.Image.Width * Zoom;

canvasPB是我的表单上Picturebox的名称，我试图用作我的画布。

Datagridview绘制晶圆图

1 个答案: