C＃中橢圓形和線條重疊形狀容器

Question

在C＃中，我試圖使用來自Microsoft.VisualBasic.PowerPacks的橢圓和線條組件繪製地圖（通過線條連接的圓形）。 繪製圓形或線條後，我將其父項設置爲形狀容器（Microsoft.VisualBasic.PowerPacks.ShapeContainer（））。 我的問題是，線條顯示在圓圈上方，即使在我的代碼中我在圓圈之前創建了線條。 你有什麼想法，我可以把橢圓形前面？

Image

和代碼本身：

public partial class Map : Form 
{ 
    private int map_w, map_h; 
    private List<int> map_data; 

    int j, i; 

    private Microsoft.VisualBasic.PowerPacks.ShapeContainer canvas; 

    private const int circle_size=75; 
    private const int circle_spacing = 75; 

    private List<Microsoft.VisualBasic.PowerPacks.OvalShape> circles = new List<Microsoft.VisualBasic.PowerPacks.OvalShape>(); 
    private List<Microsoft.VisualBasic.PowerPacks.LineShape> lines = new List<Microsoft.VisualBasic.PowerPacks.LineShape>(); 
    /// <summary> 
    /// Shows the game map 
    /// </summary> 
    /// <param name="w">the width of the map</param> 
    /// <param name="h">the hieght of the map</param> 
    /// <param name="d">the list containing the map</param> 
    public Map(int w, int h, List<int> d) 
    { 
     InitializeComponent(); 
     this.Width = w * circle_size + circle_spacing * w;//the number of territories vertically * radius of a territory * number of connections between circles 
     this.Height = h * circle_size + circle_spacing * h + circle_size/2 + circle_size/10;//same as above, only on vertical 

     canvas = new Microsoft.VisualBasic.PowerPacks.ShapeContainer(); 
     canvas.Parent = this; 

     map_w = w; 
     map_h = h; 
     map_data = d; 

     for(j=0;j<h;j++)//draw lines 
      for (i = 0; i < w; i++) 
      { 
       if (j - 1 >= 0 && i - 1 >= 0 && map_data[i + map_w * j] == 1)//to upper left 
        if (map_data[(i - 1) + map_w * (j - 1)] == 1) 
        { 
         int x1, y1, x2, y2;//start and end points for the line 
         x1 = (i - 1) * circle_size + Math.Abs((i - 1)) * circle_spacing + circle_size/2; 
         //the circle(i-1, j-1 because it's upper left) and we also take acccount of the space between circles 
         y1 = (j - 1) * circle_size + Math.Abs((j - 1)) * circle_spacing + circle_size/2; 

         x2 = i * circle_size + i * circle_spacing + circle_size/2; 
         //the second circle(original one) 
         y2 = j * circle_size + j * circle_spacing + circle_size/2; 

         Microsoft.VisualBasic.PowerPacks.LineShape line = new Microsoft.VisualBasic.PowerPacks.LineShape(x1, y1, x2, y2);//this is our line 
         line.Parent = canvas;//we draw it 
         lines.Add(line);//add it to the array 
         /*int t1, t2;//for debugging 
         t1 = i - 1; 
         t2 = j - 1; 
         string str = "From " + i + "," + j + " to " + t1 + "," + t2; 
         //listBox1.Items.Add(str);*/ 
        } 
       if (j + 1 < map_h && i - 1 >= 0 && map_data[i + map_w * j] == 1)//to lower left 
        if (map_data[(i - 1) + map_w * (j + 1)] == 1) 
        { 
         int x1, y1, x2, y2; 
         x1 = (i - 1) * circle_size + Math.Abs((i - 1)) * circle_spacing + circle_size/2; 
         y1 = (j + 1) * circle_size + Math.Abs((j + 1)) * circle_spacing + circle_size/2; 
         x2 = i * circle_size + i * circle_spacing + circle_size/2; 
         y2 = j * circle_size + j * circle_spacing + circle_size/2; 
         Microsoft.VisualBasic.PowerPacks.LineShape line = new Microsoft.VisualBasic.PowerPacks.LineShape(x1, y1, x2, y2); 
         line.Parent = canvas; 
         lines.Add(line); 
        } 
       if (j + 1 < map_h && map_data[i + map_w * j] == 1)//below 
        if (map_data[i + map_w * (j + 1)] == 1) 
        { 
         int x1, y1, x2, y2; 
         x1 = i * circle_size + Math.Abs(i) * circle_spacing + circle_size/2; 
         y1 = (j + 1) * circle_size + Math.Abs((j + 1)) * circle_spacing + circle_size/2; 
         x2 = i * circle_size + i * circle_spacing + circle_size/2; 
         y2 = j * circle_size + j * circle_spacing + circle_size/2; 
         Microsoft.VisualBasic.PowerPacks.LineShape line = new Microsoft.VisualBasic.PowerPacks.LineShape(x1, y1, x2, y2); 
         line.Parent = canvas; 
         lines.Add(line); 
        } 
       if (i + 1 < map_w && map_data[i + map_w * j] == 1)//right 
        if (map_data[i + 1 + map_w * j] == 1) 
        { 
         int x1, y1, x2, y2; 
         x1 = (i + 1) * circle_size + Math.Abs(i + 1) * circle_spacing + circle_size/2; 
         y1 = j * circle_size + Math.Abs(j) * circle_spacing + circle_size/2; 
         x2 = i * circle_size + i * circle_spacing + circle_size/2; 
         y2 = j * circle_size + j * circle_spacing + circle_size/2; 
         Microsoft.VisualBasic.PowerPacks.LineShape line = new Microsoft.VisualBasic.PowerPacks.LineShape(x1, y1, x2, y2); 
         line.Parent = canvas; 
         lines.Add(line); 
        } 
      } 

     for(j=0;j<h;j++)//draw circles 
      for (i = 0; i < w; i++) 
      { 
       if (map_data[i + w*j] == 1)//if there's a circle at that location, we draw it 
       { 
        //create a circle at the locaiton on screen 
        Microsoft.VisualBasic.PowerPacks.OvalShape oval = new Microsoft.VisualBasic.PowerPacks.OvalShape(i * circle_size + i * circle_spacing, j * circle_size + j * circle_spacing, circle_size, circle_size); 
        oval.FillColor = Color.Green;//set the backgorund color 
        oval.FillStyle = Microsoft.VisualBasic.PowerPacks.FillStyle.Solid;//and fill style 
        oval.BorderColor = Color.Black;//border 
        oval.BorderWidth = 2;//and width 
        oval.Parent = canvas;//set the parent to be the shape container 
        circles.Add(oval);//and add it to our list 
       } 
      } 
    } 
} 

Answer 1

使用BringToFront：

oval.BringToFront() 

http://msdn.microsoft.com/en-us/library/microsoft.visualbasic.powerpacks.shape.bringtofront.aspx