图表 Y 值范围，从 2000,2001,2002...3000 开始以及我想要的步骤

Question

使用 C# WinForms 图表。我想要上面的图表，我想将 Y 值范围设置为 2000、2001、2002...直至 3000。 我们如何在图表中设置范围以及如何在 Y 值范围中定义步骤。

从 SQL Server 动态访问数据。

private void LineChart()
    { //yet not working, steps are not settings yet
        DateTime date = DateTime.Now;
        string Date1 = date.ToShortDateString();
        Date1 = DateTime.Now.ToString("yyyy-MM-dd");
        //Fetch the Statistical data from database.
        string query = "SELECT  *   FROM ( Select TOP 500  
SrNo,Machine,ConeWeight,Date,DateTime FROM [DB_SProd].[dbo]. 
[TableProduction] Where Date='"+Date1+"' order by SrNo DESC ) as 
Machines\r\n  order by SrNo;\r\n ";
        
       
        DataTable dt = dbConn.GetData(query);

        //Get the DISTINCT Countries.
        List<string> Machine1 = (from p in dt.AsEnumerable()
                                  select p.Field<string>("Machine")).ToList();
        List<int> Weight1 = (from p in dt.AsEnumerable()
                                 select p.Field<int>("ConeWeight")).ToList();
        int[] countCones = { };
        //Remove the Default Series.
        if (chart3.Series.Count() == 1)
        {
            chart3.Series.Remove(chart3.Series[0]);
        }

        //Loop through the Countries.
        foreach (string macine in Machine1)
        {

            //get each machine name dynamitcally
            string[] x = (from p in dt.AsEnumerable()
                       where p.Field<string>("Machine") == macine
                       orderby p.Field<string>("Machine") ascending
                       select p.Field<string>("Machine")).ToArray();

            //Get the Total of Orders for each Country.
            int[] y = (from p in dt.AsEnumerable()
                       where p.Field<string>("Machine") == macine
                       orderby p.Field<string>("Machine") ascending
                       select p.Field<int>("ConeWeight")).ToArray();


            countCones = new int[y.Length];
            for (int i = 0; i < y.Length; i++)
            {
                countCones[i] = i;
            }

            //Add Series to the Chart.

            if (chart3.Series.IsUniqueName(macine))
            {
                //chart1.Series.Add(macine);

                chart3.Series.Add(new Series(macine));
                chart3.Series[macine].IsValueShownAsLabel = false;
                chart3.Series[macine].BorderWidth = 2;
                chart3.Series[macine].ChartType = SeriesChartType.Line;
                chart3.Series[macine].Points.DataBindXY(countCones,y);
                
                
            }
           
        }

        chart3.Legends[0].Enabled = true;
}
                
                

Answer 1

手动：

chart3.ChartAreas[0].AxisY.Minimum = 2001;
chart3.ChartAreas[0].AxisY.Maximum = 3000;

或自动

chart3.ChartAreas[0].AxisY.IsStartedFromZero = false;
chart3.ChartAreas[0].AxisY.IsMarginVisible = false;

设置步骤是：

chart3.ChartAreas[0].AxisY.Interval = 1;

Answer 2

if (chart3.Series.IsUniqueName(机器)) {

                chart3.ChartAreas.Clear();
                chart3.ChartAreas.Add("ChartArea1");
                chart3.Series.Add(new Series(macine));
                chart3.Series[macine].IsValueShownAsLabel = false;
                chart3.Series[macine].BorderWidth = 2;
                chart3.Series[macine].ChartType = SeriesChartType.Line;
                chart3.DataBindings.Clear();
                chart3.Series[macine].Points.DataBindXY(countCones,y);
                
                // chart3.ChartAreas[0].AxisY.Minimum = 2001;
                chart3.ChartAreas[0].AxisY.IsStartedFromZero = false;
                chart3.ChartAreas[0].AxisY.IsMarginVisible = false;
                chart3.ChartAreas[0].AxisX.Minimum = 0;
                chart3.Update();
              
                
            } Main Issue Resolved, but it doesn't refresh the chart as timer refresh this function with new data but chart remain the same