制作報表的時候結果出現畫紅線處的信息太散，

如果沒必要全部顯示出來，我們可以使用這種效果：

注意和前面的區分，這個功能叫做Collect Pie Slices(收集分區)

要實現此功能，應先了解相關信息

1.收集的閥值(Collected Threshold)

比如這張圖我們設置當百分比小于多少5%時集中。

2.集合區要顯示的文本(Collected Label)

比如我們這里集合區域(餅狀圖綠色部分)內顯示的Other

3.圖例文本(標簽)(CollectedLegendText)

即我們餅狀圖的圖例(右上角),顯示的文本

4.合并區域顯示的顏色(CollectedColor)

效果

5.合并后的區域是否突出(CollectedSliceExploded)

效果：

6.效果：

實現紅線處上面為數量，下面為所占百分比:

var servers = Chart1.Series[0];servers.Label = "#VAL/r/n#PERCENT{P1}";

實例：

html:

<asp:Chart ID="Chart1" runat="server" Palette="BrightPastel" BackColor="#D3DFF0" BorderDashStyle="Solid" BackSecondaryColor="White"            BackGradientStyle="TopBottom" BorderWidth="2" BorderColor="26, 59, 105" ImageLocation="~/TempImages/ChartPic_#SEQ(300,3)" ImageType="Png">            <Titles>                <asp:Title ShadowColor="32, 0, 0, 0" Font="Trebuchet MS, 14.25pt, style=Bold" ShadowOffset="3" Text="Pie Chart" Name="Title1" ForeColor="26, 59, 105"></asp:Title>            </Titles>            <Legends>                <asp:Legend   Name="Default" BackColor="Transparent"  Font="Trebuchet MS, 8.25pt, style=Bold" Enabled="True" ></asp:Legend>            </Legends>            <BorderSkin SkinStyle="Emboss"></BorderSkin>            <Series>                <asp:Series  Name="Default" ChartType="Pie" XValueType="Double" BorderColor="180, 26, 59, 105" ShadowOffset="5"                     Font="Trebuchet MS, 8.25pt, style=Bold" YValueType="Double" ></asp:Series>            </Series>            <ChartAreas>                <asp:ChartArea Name="ChartArea1" BorderColor="64, 64, 64, 64" BackSecondaryColor="White" BackColor="Transparent" ShadowColor="" BorderWidth="0">                    <Area3DStyle Rotation="10" Perspective="10" Inclination="15" IsRightAngleAxes="False" WallWidth="0" IsClustered="False"></Area3DStyle>                    <AxisY LineColor="64, 64, 64, 64">                        <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" />                        <MajorGrid LineColor="64, 64, 64, 64" />                    </AxisY>                    <AxisX LineColor="64, 64, 64, 64">                        <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" />                        <MajorGrid LineColor="64, 64, 64, 64" />                    </AxisX>                </asp:ChartArea>            </ChartAreas>        </asp:Chart>

后臺代碼：

PRotected void Page_Load(object sender, EventArgs e)        {            // Create pie chart helper class,            pieHelper = new PieCollectedDataHelper(Chart1);            pieHelper.CollectedLabel = String.Empty;            // Set chart type ，設置圖標類型，餅狀圖Pie  環裝圖：Doughnut            //Chart1.Series["Default"].ChartType = (SeriesChartType)Enum.Parse(typeof(SeriesChartType), ChartTypeList.SelectedItem.Text, true);            Chart1.Series["Default"].ChartType = SeriesChartType.Pie;            // Set chart type and title            //需要配合Titles            Chart1.Titles[0].Text = "后整產量" + " Chart";            //ShowLegend顯示標簽,Disabled隱藏    Inside內部顯示，Outside外部顯示                     Chart1.Series["Default"]["PieLabelStyle"] = "Outside";            // Set Doughnut hole size,甜甜圈寬度,,只有當 Chart1.Series["Default"].ChartType=="Doughnut"才生效            Chart1.Series["Default"]["DoughnutRadius"] = "60";            //Docking            //需要配合Legends            //調整Legends位置            Chart1.Legends[0].Docking = Docking.Bottom;            //Alignment="Center" Docking="Bottom" IsTextAutoFit="False" LegendStyle="Row"            //LegendStyle            // Enable 3D            Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = false;            //甜甜圈圖樣式Default  SoftEdge Concave,,當啟動3D模式時設置不生效            Chart1.Series[0]["PieDrawingStyle"] = "SoftEdge";            //// Pie drawing style            //if (this.CheckboxShow3D.Checked)            //    this.Dropdownlist1.Enabled = false;            //else            //    this.Dropdownlist1.Enabled = true;                       // Populate series data            double[] yValues = { 9042, 558, 2160, 4051, 2151, 1761 };            string[] xValues = { "A64", "A65", "A66", "A67", "A68", "A69"};            DataTable dt = CreateData();            var v = ToList<HZProducte>(dt);            //double[] yValues = { 65.62, 2.1, 85.73, 11.42, 34.45, 75.54, 5.7, 4.1 };            //string[] xValues = { "France", "Japan", "USA", "Italy", "Germany", "Canada", "Russia", "Spain" };            //具有綁定規則的其他數據點屬性，格式為：PointProperty=Field[{Format}] [,PointProperty=Field[{Format}]]。例如：“Tooltip=Price{C1},Url=WebSiteName”。            //Chart1.Series["Default"].Points.DataBindXY(xValues, yValues);<!--Label="#PERCENT{P1}-->"            /*                MSChart的Label的值的轉義符,如下：                #VALX 顯示當前圖例的X軸的對應文本(或數據)                #VAL, #VALY, 顯示當前圖例的Y軸的對應文本(或數據)                #VALY2, #VALY3, 顯示當前圖例的輔助Y軸的對應文本(或數據)                #SER: 顯示當前圖例的名稱                #LABEL 顯示當前圖例的標簽文本                #INDEX 顯示當前圖例的索引                #PERCENT 顯示當前圖例的所占的百分比                #TOTAL 總數量                #LEGENDTEXT 圖例文本                 當LegendText為#AXISLABEL時，如果Label為#PERCENT，并且綁定的ValueMember為數值時，LegendText顯示的和Label一樣，存在Bug。             */            var servers = Chart1.Series[0];            servers.Label = "#VAL/r/n#PERCENT{P1}";            //Chart1.DataSource = dt;            //servers.XValueMember = "CenterName";            //servers.YValueMembers = "Qty";            //servers.LegendText = "#VALX";            //Chart1.DataBind();            //servers.LabelBackColor = Color.Red;            //servers.LabelUrl = "http://www.baidu.com";                        servers.Points.DataBind(v, "CenterName", "Qty