ASP.NET Core MVC Controls | ComponentOne
Working with Controls / Sunburst Chart / Quick Start
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    Quick Start
    In This Topic

    The quick start guides you through the steps of adding a Sunburst chart to your MVC web application and add data to it.

    Follow the steps given below to get started:

    Create an MVC Application

    Create a new MVC application using the ComponentOne or VisualStudio templates. For more information about creating an MVC application, see Configuring your MVC Application topic.

    Create a Datasource for Sunburst

    1. Add a new class to the folder Models (for example: HierarchicalData.cs). See Adding controls to know how to add a new model.
    2. Add the following code to the new model to define the classes.
      SunburstController.cs
      Copy Code 
      public class HierarchicalData
{
 public int ID {get; set;}
 public int Year {get; set;}
 public string Quarter {get; set;}
 public string Month {get; set;}
 public int Value {get; set;} 
public HierarchicalData(int year, string quarter, string month, int value)
 {
  Year = year;
  Quarter = quarter;
  Month = month;
  Value = value;
 }
 public HierarchicalData() {}
 public static List <HierarchicalData> GetData()
 {
  var data = new List <HierarchicalData> ();

  var times = new string[4, 3] {
   {"Jan","Feb","Mar"}, 
   {"Apr","May","June"},
   {"Jul","Aug","Sep"},
   {"Oct","Nov","Dec"}
  };
  var years = new int[] {2015,2016,2017};

  for (int i = 0; i < years.Length; i++)
  {
   if (i % 2 == 0)
   {
    for (int j = 0; j < 4; j++)
    {
     string quar = "Q" + (j + 1);
     if (j % 2 == 0)
     {
      for (int k = 0; k < 3; k++)
      {
       data.Add(new HierarchicalData(years[i], quar, times[j, k], 100));
      }
     } else

     {
      data.Add(new HierarchicalData(years[i], quar, null, 100));
     }
    }
   } else
   {
    data.Add(new HierarchicalData(years[i], null, null, 100));
   }
  }
  return data;
 }
}
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    Add a Sunburst chart

    Complete the following steps to initialize a Sunburst chart.

    Add a new Controller

    1. In the Solution Explorer, right click the folder Controllers.
    2. From the context menu, select Add | Controller. The Add Scaffold dialog appears.
    3. Complete the following steps in the Add Scaffold dialog:
      1. Select Empty MVC Controller template.
      2. Set name of the controller (for example: SunburstController).
      3. Click Add.
    4. Include the MVC references as shown below.
      C#
      Copy Code 
      using C1.Web.Mvc;
using C1.Web.Mvc.Serializition;
using C1.Web.Mvc.Chart;
    5. Replace the method Index() with the following method.
      SunburstController.cs
      Copy Code 
      public ActionResult Index()
        {
            return View(Models.HierarchicalData.GetData());
        }
    Add a View for the Controller
    1. From the Solution Explorer, expand the folder Controllers and double click the SunburstController.
    2. Place the cursor inside the method Index().
    3. Right click and select Add View. The Add View dialog appears.
    4. In the Add View dialog, verify that the view name is Index and View engine is Razor (CSHTML).
    5. Click Add to add a view is for the controller. Copy the following code and paste it inside Index.cshtml.
      Razor
      Copy Code 
      <c1-sunburst header="2015, 2016, 2017"
binding-name="Year, Quarter, Month" binding="Value">
<c1-items-source source-collection="Model"></c1-items-source>
<c1-flex-pie-datalabel content="{name}:{value}" position="Center">
</c1-flex-pie-datalabel>
</c1-sunburst>

    Build and Run the Project

    1. Click Build | Build Solution to build the project.
    2. Press F5 to run the project.
      Append the folder name and view name to the generated URL (for example: http://localhost:1234/Sunburst/Index) in the address bar of the browser to see the view.
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