如何控制放大和縮小在Windows窗體圖表中加入縮放按鈕

Question

如何控制放大，並在Windows縮小加入ZoomIn和縮小（ZoomOut）按鈕

chart1.ChartAreas["draw"].AxisY.ScaleView.ZoomReset(); 

Answer 1

放大按鈕圖表表格：

Axis ax = chart1.ChartAreas[0].AxisX; 
ax.ScaleView.Size = double.IsNaN(ax.ScaleView.Size)? 
        (ax.Maximum - ax.Minimum)/2 : ax.ScaleView.Size /= 2; 

縮小：

Axis ax = chart1.ChartAreas[0].AxisX; 
ax.ScaleView.Size = double.IsNaN(ax.ScaleView.Size)? 
        ax.Maximum : ax.ScaleView.Size *= 2; 
if (ax.ScaleView.Size > ax.Maximum - ax.Minimum) 
{ 
    ax.ScaleView.Size = ax.Maximum; 
    ax.ScaleView.Position = 0; 
}