diff --git a/TestWinFormsDataVis/Form1.cs b/TestWinFormsDataVis/Form1.cs
index 3862c7c..7ab9c4f 100644
--- a/TestWinFormsDataVis/Form1.cs
+++ b/TestWinFormsDataVis/Form1.cs
@@ -24,7 +24,9 @@ namespace TestWinFormsDataVis
         List<StraightLine> koordCross = new();
         List<TwoPoints> CurveSin = new();
         List<TwoPoints> CurveCos = new();
+        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
         public bool CrossDrawn { get; set; } = false;
+        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
         public bool CurvesDrawn { get; set; } = false;
 
         static int _yMid = 0;
diff --git a/TestWinFormsDataVis/TestWinFormsDataVis.csproj b/TestWinFormsDataVis/TestWinFormsDataVis.csproj
index 4ea815e..575ca8f 100644
--- a/TestWinFormsDataVis/TestWinFormsDataVis.csproj
+++ b/TestWinFormsDataVis/TestWinFormsDataVis.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net5.0-windows</TargetFramework>
+    <TargetFramework>net9.0-windows</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
   </PropertyGroup>
   
diff --git a/Testthings/Testthings.csproj b/Testthings/Testthings.csproj
index 2082704..92e46dd 100644
--- a/Testthings/Testthings.csproj
+++ b/Testthings/Testthings.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
 </Project>