在mschart（ASP.net C＃）中将工具提示分配给点

Question

I need to display the value in tool tip on moving the mouse over the data point.It displays the value but value which is displayed in not in proper data point. yvalue and axis lable collection is
(237.71 , 12:13:58 ), (238.53 , 12:28:58), (239.95 , 12:58:58 ), (238.25 , 1:13:57), (240.17 , 1:29:01), (241.24 , 1:58:57),
(243.24 , 2:13:57), (243.47 , 2:28:58), (242.05 , 2:58:57), For example on moving mouse over 237.71 data point it displays 238.53. and on moving mouse over 241.24 data point it displays 242.05. Please give any suggestion.

Chart1.Visible = true;
    string startDate = "", EndDate = "";
    Chart1.BackColor = System.Drawing.Color.FromArgb(211, 223, 240); //"#D3DFF0"
    Chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = false;
    Chart1.ChartAreas[0].AxisX.MinorGrid.Enabled = false;
    Chart1.Legends.Add("R Phase");
    Chart1.Series.Add("R Phase");
    Chart1.Series[0].BorderColor = System.Drawing.Color.Transparent;
    Chart1.ChartAreas[0].AxisX.Title = "Time";
    Chart1.ChartAreas[0].AxisY.Title = "Value";
    Chart1.Series[0].ChartType = SeriesChartType.Line;
    Chart1.Series[0].BorderWidth = 3;
    Chart1.Series[0].Color = Color.Maroon;
    Chart1.Series[0].Points.DataBindXY(AxisLabelGrid1, yValueGrid1);
    Chart1.Series[0].IsValueShownAsLabel = true;
    Chart1.Series[0].IsVisibleInLegend = true;
    Chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Auto;
    Chart1.ChartAreas[0].AxisX.Interval = 1.0;
    //Chart1.Series[0].ToolTip = "#VALX - #VALY";
    int i = 0;
    foreach (var pt in Chart1.Series[0].Points)
    {
        string date = GridView1.Rows[i].Cells[0].Text;
       pt.ToolTip = "Value :" + GridView1.Rows[i].Cells[1].Text + "\n Phase : Y Phase";
        if (i == 0)
        {
            startDate = date;
        }
        EndDate = date;
        pt.MarkerColor = System.Drawing.Color.Maroon;
        pt.MarkerSize = 10;
        pt.MarkerStyle = MarkerStyle.Circle;
       // pt.ToolTip = "Value :" + pt.YValues[0].ToString() + "\n Phase : R Phase";
        i++;
    }

    Title tit = new Title("Line chart from " + startDate + " to " + EndDate, Docking.Top, new Font("Garamond", 14), Color.Black);
    Chart1.Titles.Add(tit);

Answer 1

I had a similar problem before.

Chart1.Series[0].IsXValueIndexed = false; 
Chart1.Series[0].XValueType = ChartValueType.Time;

would solve the problem.