C# 添加从文本文件读取位置数据的动态控件（PictureBox）

我有一个只有一行的文本文件。这行代码如下所示：

100 300 200 400 658 487 2636 254 245 527

这些数字表示点的X和Y坐标，第一个和第二个是点N1的X和Y，第三个和第四个是点N2的X和Y

我读取文件并将其放入数组中。 我的下一步是在容器面板中绘制图片框。 问题是面板仅显示带有最后一个坐标的控件

private void CreateBlastHole(string[] pointCoordinate)
{
    PictureBox blastHole = new PictureBox();

    blastHole.Height = 15;
    blastHole.Width = 15;
    blastHole.BackColor = Color.Blue;

    for (int i = 0; i < pointCoordinate.Length; i++)
    {
        blastHole.Left = int.Parse(pointCoordinate[i]);
        i = i + 1;
        blastHole.Top = int.Parse(pointCoordinate[i]);

        drawingPanel.Controls.Add(blastHole);
    }

    blastHole.Click += new EventHandler(BlastHole_Click);

    ToolTip tooltip1 = new ToolTip();

    // Set up delays for the tooltip
    tooltip1.AutoPopDelay = 5000;
    tooltip1.InitialDelay = 1000;
    tooltip1.ReshowDelay = 500;

    // Force the tooltip text to be displayed whether or not the form is active.
    tooltip1.ShowAlways = true;

    // Set up the tooltip text for the controls
    int axisX = blastHole.Location.X;
    int axisY = blastHole.Location.Y;
    string coordinates = "Точка N " + blastHole.Name + "X = " + axisX.ToString() + " Y = " + axisY.ToString();
    tooltip1.SetToolTip(blastHole, coordinates);
}

private void BlastHole_Click(object sender, EventArgs e)
{
    MessageBox.Show(MousePosition.X.ToString(), MousePosition.Y.ToString());
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void openButton_Click(object sender, EventArgs e)
{
    openFileDialogPoints.ShowDialog();
    string name = openFileDialogPoints.FileName;
    File.ReadAllLines(name);
    string[] points = File.ReadAllText(name).Split( );

    CreateBlastHole(points);
}

private void drawingPanel_Paint(object sender, PaintEventArgs e)
{

}

private void buttonDrawHole_Click(object sender, EventArgs e)
{

}

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您需要将代码移动到for循环中，以创建多个PictureBox。目前，您只创建一个实例，对每个爆破孔重复使用它

请尝试以下方法：

private void CreateBlastHole(string[] pointCoordinate)
{
    for (int i = 0; i < pointCoordinate.Length; i++)
    {
        PictureBox blastHole = new PictureBox();

        blastHole.Height = 15;
        blastHole.Width = 15;
        blastHole.BackColor = Color.Blue;

        blastHole.Left = int.Parse(pointCoordinate[i]);
        i = i + 1;
        blastHole.Top = int.Parse(pointCoordinate[i]);

        drawingPanel.Controls.Add(blastHole);

        blastHole.Click += new EventHandler(BlastHole_Click);

        ToolTip tooltip1 = new ToolTip();

        // Set up delays for the tooltip
        tooltip1.AutoPopDelay = 5000;
        tooltip1.InitialDelay = 1000;
        tooltip1.ReshowDelay = 500;

        // Force the tooltip text to be displayed whether or not the form is active.
        tooltip1.ShowAlways = true;

        // Set up the tooltip text for the controls
        int axisX = blastHole.Location.X;
        int axisY = blastHole.Location.Y;
        string coordinates = "Точка N " + blastHole.Name + "X = " + axisX.ToString() + " Y = " + axisY.ToString();
        tooltip1.SetToolTip(blastHole, coordinates);
    }
}

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您只创建了一个PictureBox。drawingPanel中有什么。for循环完成后的控件？