MSChart使用

制作报表的时候结果出现画红线处的信息太散，

如果没必要全部显示出来，我们可以使用这种效果：

注意和前面的区分，这个功能叫做Collect Pie Slices(收集分区)

要实现此功能，应先了解相关信息

1.收集的阀值(Collected Threshold)

比如这张图我们设置当百分比小于多少5%时集中。

2.集合区要显示的文本(Collected Label)

比如我们这里集合区域(饼状图绿色部分)内显示的Other

3.图例文本(标签)(CollectedLegendText)

即我们饼状图的图例(右上角),显示的文本

4.合并区域显示的颜色(CollectedColor)

效果

5.合并后的区域是否突出(CollectedSliceExploded)

效果：

6.效果：

实现红线处上面为数量，下面为所占百分比:

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

实例：

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>

后台代码：

protected void Page_Load(object sender, EventArgs e)
        {
            // Create pie chart helper class,
            pieHelper = new PieCollectedDataHelper(Chart1);
            pieHelper.CollectedLabel = String.Empty;

            // Set chart type ，设置图标类型，饼状图Pie  环装图：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 = "后整产量" + " Chart";

            //ShowLegend显示标签,Disabled隐藏    Inside内部显示，Outside外部显示

            Chart1.Series["Default"]["PieLabelStyle"] = "Outside";

            // Set Doughnut hole size,甜甜圈宽度,,只有当 Chart1.Series["Default"].ChartType=="Doughnut"才生效
            Chart1.Series["Default"]["DoughnutRadius"] = "60";
            //Docking
            //需要配合Legends
            //调整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;

            //甜甜圈图样式Default  SoftEdge Concave,,当启动3D模式时设置不生效
            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" };

            //具有绑定规则的其他数据点属性，格式为：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的值的转义符,如下：
                #VALX 显示当前图例的X轴的对应文本(或数据)
                #VAL, #VALY, 显示当前图例的Y轴的对应文本(或数据)
                #VALY2, #VALY3, 显示当前图例的辅助Y轴的对应文本(或数据)
                #SER: 显示当前图例的名称
                #LABEL 显示当前图例的标签文本
                #INDEX 显示当前图例的索引
                #PERCENT 显示当前图例的所占的百分比
                #TOTAL 总数量
                #LEGENDTEXT 图例文本

                当LegendText为#AXISLABEL时，如果Label为#PERCENT，并且绑定的ValueMember为数值时，LegendText显示的和Label一样，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", "LegendText=CenterName");

            pieHelper.SupplementedAreaSizeRatio = 3.0f;

        }

        public class HZProducte
        {
            public int Qty { set; get; }

            public string CenterName { get; set; }
        }

        DataTable CreateData()
        {

            DataTable dt = new DataTable();

            #region 准备Dt
            dt.Columns.Add("Qty", typeof(System.Int32));
            dt.Columns.Add("CenterName", typeof(System.String));

            DataRow row1 = dt.Rows.Add();
            row1["Qty"] = 9042;
            row1["CenterName"] = "后整一厂";

            DataRow row2 = dt.Rows.Add();
            row2["Qty"] = 558;
            row2["CenterName"] = "后整二厂";

            DataRow row3 = dt.Rows.Add();
            row3["Qty"] = 2160;
            row3["CenterName"] = "后整三厂";

            DataRow row4 = dt.Rows.Add();
            row4["Qty"] = 4051;
            row4["CenterName"] = "后整四厂";

            DataRow row5 = dt.Rows.Add();
            row5["Qty"] = 2151;
            row5["CenterName"] = "后整五厂";

            DataRow row6 = dt.Rows.Add();
            row6["Qty"] = 1761;
            row6["CenterName"] = "后整六厂";

            #endregion
            return dt;
        }

        /// <summary>
        /// DataTable 转换为List 集合
        /// </summary>
        /// <typeparam name="TResult">类型</typeparam>
        /// <param name="dt">DataTable</param>
        /// <returns></returns>
        public static List<TResult> ToList<TResult>(DataTable dt) where TResult : class, new()
        {
            //创建一个属性的列表
            List<PropertyInfo> prlist = new List<PropertyInfo>();
            //获取TResult的类型实例  反射的入口
            Type t = typeof(TResult);
            //获得TResult 的所有的Public 属性 并找出TResult属性和DataTable的列名称相同的属性(PropertyInfo) 并加入到属性列表
            Array.ForEach<PropertyInfo>(t.GetProperties(), p => { if (dt.Columns.IndexOf(p.Name) != -1) prlist.Add(p); });
            //创建返回的集合
            List<TResult> oblist = new List<TResult>();

            foreach (DataRow row in dt.Rows)
            {
                //创建TResult的实例
                TResult ob = new TResult();
                //找到对应的数据  并赋值
                prlist.ForEach(p => { if (row[p.Name] != DBNull.Value) p.SetValue(ob, row[p.Name], null); });
                //放入到返回的集合中.
                oblist.Add(ob);
            }
            return oblist;
        }

设置Collected相关代码

if (this.chk_Pie.Checked)
            {
                comboBoxChartType.Enabled = true;
                comboBoxCollectedColor.Enabled = true;
                comboBoxCollectedThreshold.Enabled = true;
                textBoxCollectedLabel.Enabled = true;
                textBoxCollectedLegend.Enabled = true;
                this.ShowExplode.Enabled = true;

                // Set the threshold under which all points will be collected
                series1["CollectedThreshold"] = comboBoxCollectedThreshold.SelectedItem.ToString();

                // Set the label of the collected pie slice
                series1["CollectedLabel"] = textBoxCollectedLabel.Text;

                // Set the legend text of the collected pie slice
                series1["CollectedLegendText"] = textBoxCollectedLegend.Text;

                // Set the collected pie slice to be exploded
                series1["CollectedSliceExploded"]= this.ShowExplode.Checked.ToString();

                // Set collected color
                series1["CollectedColor"] = comboBoxCollectedColor.SelectedItem.ToString();

                // Set chart type
                series1.ChartType = (SeriesChartType) Enum.Parse( typeof(SeriesChartType), comboBoxChartType.SelectedItem.ToString(), true );
            }

            else
            {
                series1["CollectedThreshold"] = "0";
                comboBoxChartType.Enabled = false;
                comboBoxCollectedColor.Enabled = false;
                comboBoxCollectedThreshold.Enabled = false;
                textBoxCollectedLabel.Enabled = false;
                textBoxCollectedLegend.Enabled = false;
                this.ShowExplode.Enabled = false;
            }