mschart 饼图 如何实现以下效果：饼图点击一个分块再展开一个饼图

[cstslqq]

mschart 饼图 如何实现以下效果：
饼图上点击一个分块再展开一个饼图，实现多层饼图。

[cstslqq]

求高手解答！

[cstslqq]

没有人用过吗

[zy786995202]

帮顶，我也想学习一下

[cstslqq]

已解决，参考如下代码：
using System.Windows.Forms.DataVisualization.Charting;
...

/// <summary>
/// Mouse Down Event
/// </summary>
private void chart1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Call Hit Test Method
HitTestResult result = chart1.HitTest( e.X, e.Y );

// Check if data point is already exploded
bool exploded = ( chart1.Series[0].Points[result.PointIndex].CustomProperties == "Exploded=true" )? true : false ;

// Remove all exploded attributes
foreach( DataPoint point in chart1.Series[0].Points )
{
point.CustomProperties = "";
}

// If data point is already exploded get out.
if( exploded )
return;

// If data point is selected
if( result.ChartElementType == ChartElementType.DataPoint )
{
// Set Attribute
DataPoint point = chart1.Series[0].Points[result.PointIndex];
point.CustomProperties = "Exploded = true";
}

// If legend item is selected
if( result.ChartElementType == ChartElementType.LegendItem )
{
// Set Attribute
DataPoint point = chart1.Series[0].Points[result.PointIndex];
point.CustomProperties = "Exploded = true";
}
}

/// <summary>
/// Mouse Move Event
/// </summary>
private void chart1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Call Hit Test Method
HitTestResult result = chart1.HitTest( e.X, e.Y );

// Reset Data Point Attributes
foreach( DataPoint point in chart1.Series[0].Points )
{
point.BackSecondaryColor = Color.Black;
point.BackHatchStyle = ChartHatchStyle.None;
point.BorderWidth = 1;
}

// If a Data Point or a Legend item is selected.
if
( result.ChartElementType == ChartElementType.DataPoint ||
result.ChartElementType == ChartElementType.LegendItem )
{
// Set cursor type
this.Cursor = Cursors.Hand;

// Find selected data point
DataPoint point = chart1.Series[0].Points[result.PointIndex];

// Set End Gradient Color to White
point.BackSecondaryColor = Color.White;

// Set selected hatch style
point.BackHatchStyle = ChartHatchStyle.Percent25;

// Increase border width
point.BorderWidth = 2;
}
else
{
// Set default cursor
this.Cursor = Cursors.Default;
}

}
...