assets/samples/Samples/InCanvasControlAPI/CS/IssueSelectHandler.cs

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using Autodesk.Revit.UI;
using System;

namespace Revit.SDK.Samples.InCanvasControlAPI.CS
{
   /// <summary>
   /// This class demonstrates using external server to handle click events on an in-canvas control.
   /// </summary>
   public class IssueSelectHandler : ITemporaryGraphicsHandler
   {
      #region Class interface implementation

      /// <summary>
      /// Gets the handler's description
      /// </summary>
      /// <returns></returns>
      public string GetDescription()
      {
         return "Changes Issue marker visual upon marker click";
      }

      /// <summary>
      /// Gets the hander's name
      /// </summary>
      /// <returns></returns>
      public string GetName()
      {
         return "Issue marker click event handler";
      }

      /// <summary>
      /// Gets server's GUID
      /// </summary>
      /// <returns>External server GUID</returns>
      public Guid GetServerId()
      {
         return new Guid("81F91FC9-B6D5-4FD4-AB5B-04F307369A79");
      }

      /// <summary>
      /// Gets service id this server should be registered on.
      /// </summary>
      /// <returns></returns>
      public Autodesk.Revit.DB.ExternalService.ExternalServiceId GetServiceId()
      {
         return Autodesk.Revit.DB.ExternalService.ExternalServices.BuiltInExternalServices.TemporaryGraphicsHandlerService;
      }

      /// <summary>
      /// Gets vendor's name
      /// </summary>
      /// <returns></returns>
      public string GetVendorId()
      {
         return "ADSK";
      }

      /// <summary>
      /// Handles the event of control being clicked
      /// </summary>
      /// <param name="data">Data of the event. This only provides us with an index of the control clicked. The developer / API user should make sense of each index himself.</param>
      public void OnClick(TemporaryGraphicsCommandData data)
      {
         IssueMarkerSelector.SelectMarker(data.Document, data.Index);
      }

      #endregion
   }
}