dashboard data works

Pi.Hub.Api/Controllers/DashboardController.cs

+using Microsoft.AspNetCore.Mvc;
+
+namespace Pi.Hub.Api.Controllers
+{
+    [Route("api/[controller]")]
+    public class DashboardController : Controller
+    {
+        public object Get()
+        {
+            string text = System.IO.File.ReadAllText("C:\\apps\\msgs.txt");
+            return $"{{\"data\":[{text}]}}";
+        }
+    }
+}
\ No newline at end of file

Pi.Hub.Api/Controllers/StatusController.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
+using Newtonsoft.Json;
 
 namespace Pi.Hub.Api.Controllers
 {
@@ -20,6 +21,8 @@ namespace Pi.Hub.Api.Controllers
         [Route("[action]")]
         public object Echo([FromBody]object obj)
         {
+            string serialized = JsonConvert.SerializeObject(obj);
+            System.IO.File.AppendAllLines("C:\\apps\\msgs.txt", new[] { ","+serialized });
             return new
             {
                 Echo = obj

Pi.Hub.Api/Pi.Hub.Api.csproj

-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <RuntimeIdentifiers>win-arm;linux-arm;x86</RuntimeIdentifiers>
+    <PackageTargetFallback>portable-net45+win8</PackageTargetFallback>
   </PropertyGroup>
 
   <ItemGroup>