Update Index.razor

Author: abooarulraj

Pages/Index.razor

@@ -1,4 +1,5 @@
 @page "/"
+@using Syncfusion.Blazor.TreeGrid
 
 <SfTreeGrid DataSource="@TreeData" IdMapping="TaskId" ParentIdMapping="ParentId" TreeColumnIndex="1"
             AllowPaging="true" AllowSorting="true" AllowFiltering="true">
@@ -44,4 +45,4 @@
         TreeData.Add(new BusinessObject() { TaskId = 8, TaskName = "Child Task 7", Duration = 3, Progress = 38, ParentId = 7, Priority = "Critical" });
         TreeData.Add(new BusinessObject() { TaskId = 9, TaskName = "Child Task 8", Duration = 7, Progress = 70, ParentId = 7, Priority = "Low" });
     }
-}
+}