Vertical Line on Radchart

[Rakesh]

Trying to draw a vertical line with x-axis as Datetime. How to set the X-axis a Constant Date using MarkedZones.

<MarkedZones> 
                                                                <telerik:ChartMarkedZone Name="Marked zone 1" >
                                                                    <Appearance> 
                                                                        <Border Width="2" Color="Pink" /> 
                                                                    </Appearance> 
                                                                </telerik:ChartMarkedZone> 
                                                            </MarkedZones> 

[Evgenia]

Hello Rakesh,

Since the DateTime-s on the XAxis are presented as doubles (using its OLE Automation equivalent - ToOADate() method), you may set this double as starting point for your marked zone. Here's an example:

protected void Page_Load(object sender, EventArgs e)
   {
       ChartSeries series = new ChartSeries();
       series.DataXColumn = "OADate";
       series.DataYColumn = "YValue";
       radChart1.Series.Add(series);
       radChart1.PlotArea.XAxis.Appearance.ValueFormat = ChartValueFormat.ShortDate;
       radChart1.PlotArea.XAxis.Appearance.LabelAppearance.RotationAngle = 320;
       radChart1.PlotArea.XAxis.IsZeroBased = false;
       radChart1.PlotArea.XAxis.AutoScale = false;
       double startTime = DateTime.Today.ToOADate();
       double endTime = DateTime.Today.AddDays(4).ToOADate();
       radChart1.PlotArea.XAxis.AddRange(startTime, endTime, 1);
       radChart1.DataSource = GetData();
       radChart1.DataBind();
       ChartMarkedZone mzone = new ChartMarkedZone();
       mzone.ValueStartY = 100;
       mzone.ValueEndY = 0;
       mzone.ValueStartX = (double)radChart1.PlotArea.XAxis[2].Value;
       mzone.ValueEndX = (double)radChart1.PlotArea.XAxis[2].Value;
       mzone.Appearance.Border.Color = Color.Red;
       mzone.Appearance.Border.Width = 2;
       radChart1.PlotArea.MarkedZones.Add(mzone);
       radChart1.AutoLayout = true;
   }
   private static List<ChartData> GetData()
   {
       List<ChartData> data = new List<ChartData>();
       data.Add(new ChartData() { Date = DateTime.Today, YValue = 21 });
       data.Add(new ChartData() { Date = DateTime.Today.AddDays(1), YValue = 11 });
       data.Add(new ChartData() { Date = DateTime.Today.AddDays(2), YValue = 15 });
       data.Add(new ChartData() { Date = DateTime.Today.AddDays(3), YValue = 17 });
       data.Add(new ChartData() { Date = DateTime.Today.AddDays(4), YValue = 19 });
       return data;
   }
   public class ChartData
   {
       public double OADate
       {
           get
           {
               return this.Date.ToOADate();
           }
       }
       public DateTime Date
       {
           get;
           set;
       }
       public double YValue
       {
           get;
           set;
       }
   }

Greetings,
Evgenia
the Telerik team