zedgraph绘制多条曲线图问题

[缭绕飘渺]

使用zedgraph三方控件根据函数关系绘制曲线图，在函数关系不变的情况下需要绘制多条曲线
比如在x范围在0--200范围内绘制一条，在200--400范围内绘制另一条
绘制的话已经实现，但是发现这两条线在200这个交接点的附件并不是连在一起的
而是空出一部分范围，我的数据类型是float
谁搞过这个控件的给个提示，给个例子最好
我要绘出的效果就是多根电线杆上电线的情况

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如上4个电线杆，我要在每两个中间绘出一条曲线来，现在想做到的是
绘出的曲线在电线杆这个点（x轴）要互相连接起来
我打代码大概如下,先在代码直接赋值，参数都是大概设置的，但明显
可以看出连接点不是连接在一起的
PowerLine为一个类，里面是绘制图形的各个函数关系

 ZedGraph.PointPairList list = new ZedGraph.PointPairList();
                ZedGraph.LineItem myCurve;

                ZedGraph.PointPairList list2 = new ZedGraph.PointPairList();
                ZedGraph.LineItem myCurve2;

                float splitX = (float)Long/ 10;
                for (float x = 0; x < Long; x=x+splitX)
                {
                    float y = (float)PowerLine.yr(x, du, Zhong, Long, Fln);//函数关系
                    list.Add(x, y);
                }

                myCurve = zedGraphControl1.GraphPane.AddCurve("My Curve",list, Color.DarkGreen, ZedGraph.SymbolType.None);

                for (float x = (float)Long; x <Long+ 200; x++)
                {
                    float y = (float)PowerLine.yr(x, du, Zhong, Long+ 200, Fln);
                    list2.Add(x, y);
                }
                myCurve2 = zedGraphControl1.GraphPane.AddCurve("test", list2, Color.Red, ZedGraph.SymbolType.None);

                zedGraphControl1.AxisChange();
                zedGraphControl1.Refresh();

初步怀疑是赋值给点结构体的时候丢了部分数据造成的
但不知道如何修改了，请路过的指点迷津，顶贴的也非常欢迎

[缭绕飘渺]

人呢
搞过这种东西速度过来帮忙啊

[熙风]

   //动态创建视图
            string startTemp = start + "-01 00:00:00";
            string endTemp;
            if (Convert.ToInt32(cmendmonth.Text) < 12)
            {
                endTemp = cmendyear.Text + "-" + Convert.ToString(Convert.ToInt32(cmendmonth.Text) + 1) + "-01 00:00:00";
            }
            else
            {
                endTemp = Convert.ToString(Convert.ToInt32(cmendyear.Text) + 1) + "-" + "01-01 00:00:00";

            }
            operation.CreateViwPro(startTemp, endTemp);

            string strWhere = "";

            if (ltvDeptInfo.CheckedItems.Count > 0)
            {
                strWhere = " Where ";
            }
            string[] names = new string[ltvDeptInfo.CheckedItems.Count];
            string[] deptId = new string[ltvDeptInfo.CheckedItems.Count];
            for (int i = 0; i < ltvDeptInfo.CheckedItems.Count; i++)
            {
                strWhere += " c.deptid = '" + ltvDeptInfo.CheckedItems[i].Tag.ToString() + "'";

                if (i < ltvDeptInfo.CheckedItems.Count - 1)
                {
                    strWhere += " or";
                }
                deptId[i] = ltvDeptInfo.CheckedItems[i].Tag.ToString();
                names[i] = ltvDeptInfo.CheckedItems[i].Text.ToString();
            }

            DataTable dt = operation.getTimecount(start, end);
            string[] dateid = new string[dt.Rows.Count];
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                dateid[i] = dt.Rows[i]["day_id"].ToString();
            }

            #region    画图
            this.zedGraphControl1.GraphPane.Title.Text = "";
            this.zedGraphControl1.GraphPane.XAxis.Title.Text = "月份";
            this.zedGraphControl1.GraphPane.YAxis.Title.Text = "数量";
            this.zedGraphControl1.GraphPane.CurveList.Clear();
            this.zedGraphControl1.GraphPane.GraphObjList.Clear();
            this.zedGraphControl1.GraphPane.Fill = new Fill(Color.White, Color.LightSkyBlue, 45.0f);
            this.zedGraphControl1.GraphPane.Chart.Fill = new Fill(Color.White, Color.LightSeaGreen, 45.0f);

            this.zedGraphControl1.GraphPane.YAxis.Scale.Min = 0;
            for (int i = 0; i < deptId.Length; i++)
            {
                DataTable dtvalue = operation.getqushiByDate(deptId[i], start, end);
                double[] titles = new double[dtvalue.Rows.Count];
                for (int j = 0; j < dtvalue.Rows.Count; j++)
                {
                    titles[j] = double.Parse(dtvalue.Rows[j]["doccount"].ToString() == "" ? "0" : dtvalue.Rows[j]["doccount"].ToString());
                }

                SetStatisticalTable(dtvalue, i, names[i]);
                LineItem myCurve = this.zedGraphControl1.GraphPane.AddCurve(names[i], titles, titles, GetColor());
                myCurve.Tag = names[i];
            }
            zedGraphControl1.PointValueEvent += new ZedGraphControl.PointValueHandler(MyPointValueHandler);

            this.zedGraphControl1.GraphPane.XAxis.Scale.TextLabels = dateid;
            this.zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.Size = 8;
            this.zedGraphControl1.GraphPane.XAxis.Type = AxisType.Text;
            this.zedGraphControl1.GraphPane.BarSettings.Type = BarType.Overlay;
            this.zedGraphControl1.GraphPane.YAxis.Scale.MajorStep = 5;
            this.zedGraphControl1.GraphPane.XAxis.MajorTic.IsBetweenLabels = true;
            this.zedGraphControl1.AxisChange();
            this.zedGraphControl1.Refresh();
            #endregion


 /// <summary>
        /// 随机成一个颜色
        /// </summary>
        /// <returns></returns>
        public Color GetColor()
        {
            Random RandomNum_First = new Random((int)DateTime.Now.Ticks);
            //  对于C#的随机数，没什么好说的 
            System.Threading.Thread.Sleep(RandomNum_First.Next(50));
            Random RandomNum_Sencond = new Random((int)DateTime.Now.Ticks);

            //  为了在白色背景上显示，尽量生成深色 
            int int_Red = RandomNum_First.Next(256);
            int int_Green = RandomNum_Sencond.Next(256);
            int int_Blue = (int_Red + int_Green > 400) ? 0 : 400 - int_Red - int_Green;
            int_Blue = (int_Blue > 255) ? 255 : int_Blue;

            return Color.FromArgb(int_Red, int_Green, int_Blue);

        }

        /// <summary>
        /// 表格显示统计信息
        /// </summary>
        /// <param name="dt"></param>
        private void SetStatisticalTable(DataTable dt, int num, string name)
        {
            DataTable dt2 = dgvStatistical.DataSource as DataTable;
            if (num == 0 || num.Equals(0))
            {
                dt2 = new DataTable();
                dt2.Columns.Add("deptId", typeof(String));
                dt2.Columns.Add("time", typeof(String));
                dt2.Columns.Add("num", typeof(String));
            }

            int count = 0;
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                if (dt.Rows[i]["doccount"].ToString() != "")
                {
                    count += int.Parse(dt.Rows[i]["doccount"].ToString());
                }
            }
            string endtime = start;
            string starttime = end;

            //当时间相同的时候  只显示一次
            string time = "";
            if (endtime.Equals(starttime))
            {
                time = starttime;
            }
            else
            {
                time = endtime + " 至 " + starttime;
            }

            DataRow dr = dt2.NewRow();
            dr["deptId"] = name;
            dr["time"] = time;
            dr["num"] = count.ToString();
            dt2.Rows.Add(dr);
            dgvStatistical.DataSource = dt2;


        }

[缭绕飘渺]

楼上的大哥等于没说
我就看到你取完数据后用一个事件去完成的绘图吧
跟我这样没啥关系啊
请给点明确的指点啊

[缭绕飘渺]

没人给点指导意见吗