diff --git a/Pilz.Collections/Pilz.Collections.csproj b/Pilz.Collections/Pilz.Collections.csproj
index 2fddb09..42f381b 100644
--- a/Pilz.Collections/Pilz.Collections.csproj
+++ b/Pilz.Collections/Pilz.Collections.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     
     <StartupObject />
-    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/Pilz.Cryptography/Pilz.Cryptography.csproj b/Pilz.Cryptography/Pilz.Cryptography.csproj
index 2b17e9f..b7e1f6d 100644
--- a/Pilz.Cryptography/Pilz.Cryptography.csproj
+++ b/Pilz.Cryptography/Pilz.Cryptography.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
-    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
   
diff --git a/Pilz.Drawing/Pilz.Drawing.vbproj b/Pilz.Drawing/Pilz.Drawing.vbproj
index 4bb7f1a..1b38d2f 100644
--- a/Pilz.Drawing/Pilz.Drawing.vbproj
+++ b/Pilz.Drawing/Pilz.Drawing.vbproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <MyType>Windows</MyType>
-    <TargetFrameworks>net8.0-windows;netframework4.8</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
     <DocumentationFile>Pilz.Drawing.xml</DocumentationFile>
diff --git a/Pilz.Extensions/Pilz.Extensions.csproj b/Pilz.Extensions/Pilz.Extensions.csproj
index 3344213..577f57d 100644
--- a/Pilz.Extensions/Pilz.Extensions.csproj
+++ b/Pilz.Extensions/Pilz.Extensions.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/Pilz.Gaming.Minecraft/Pilz.Gaming.Minecraft.csproj b/Pilz.Gaming.Minecraft/Pilz.Gaming.Minecraft.csproj
index 46331f9..56d629f 100644
--- a/Pilz.Gaming.Minecraft/Pilz.Gaming.Minecraft.csproj
+++ b/Pilz.Gaming.Minecraft/Pilz.Gaming.Minecraft.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/Pilz.Net.CloudProviders.Nextcloud/Pilz.Net.CloudProviders.Nextcloud.csproj b/Pilz.Net.CloudProviders.Nextcloud/Pilz.Net.CloudProviders.Nextcloud.csproj
index 854f7f9..736cf60 100644
--- a/Pilz.Net.CloudProviders.Nextcloud/Pilz.Net.CloudProviders.Nextcloud.csproj
+++ b/Pilz.Net.CloudProviders.Nextcloud/Pilz.Net.CloudProviders.Nextcloud.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/Pilz.Net/Api/Client/BaseChildItemClient.cs b/Pilz.Net/Api/Client/BaseChildItemClient.cs
index 0e8b2c7..bcb40a1 100644
--- a/Pilz.Net/Api/Client/BaseChildItemClient.cs
+++ b/Pilz.Net/Api/Client/BaseChildItemClient.cs
@@ -1,5 +1,5 @@
-using Pilz.Net.Api.Messages;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Net.Api.Messages;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Client/BaseClient.cs b/Pilz.Net/Api/Client/BaseClient.cs
index 41a72f3..c0b1745 100644
--- a/Pilz.Net/Api/Client/BaseClient.cs
+++ b/Pilz.Net/Api/Client/BaseClient.cs
@@ -1,5 +1,5 @@
-using Pilz.Net.Api.Messages;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Net.Api.Messages;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Client/BaseItemClient.cs b/Pilz.Net/Api/Client/BaseItemClient.cs
index eb97d97..5df51bb 100644
--- a/Pilz.Net/Api/Client/BaseItemClient.cs
+++ b/Pilz.Net/Api/Client/BaseItemClient.cs
@@ -1,5 +1,5 @@
-using Pilz.Net.Api.Messages;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Net.Api.Messages;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Client/IBaseChildItemClient.cs b/Pilz.Net/Api/Client/IBaseChildItemClient.cs
index 058c364..57ec171 100644
--- a/Pilz.Net/Api/Client/IBaseChildItemClient.cs
+++ b/Pilz.Net/Api/Client/IBaseChildItemClient.cs
@@ -1,4 +1,4 @@
-using Pilz.Net.Data;
+using Pilz.Data;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Client/IBaseClient.cs b/Pilz.Net/Api/Client/IBaseClient.cs
index cdfd231..9f83ef9 100644
--- a/Pilz.Net/Api/Client/IBaseClient.cs
+++ b/Pilz.Net/Api/Client/IBaseClient.cs
@@ -1,4 +1,4 @@
-using Pilz.Net.Data;
+using Pilz.Data;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Client/IBaseItemClient.cs b/Pilz.Net/Api/Client/IBaseItemClient.cs
index 4d58b7b..a0a44f6 100644
--- a/Pilz.Net/Api/Client/IBaseItemClient.cs
+++ b/Pilz.Net/Api/Client/IBaseItemClient.cs
@@ -1,4 +1,4 @@
-using Pilz.Net.Data;
+using Pilz.Data;
 
 namespace Pilz.Net.Api.Client;
 
diff --git a/Pilz.Net/Api/Server/BaseChildItemHandler.cs b/Pilz.Net/Api/Server/BaseChildItemHandler.cs
index 7109e86..6fdfad2 100644
--- a/Pilz.Net/Api/Server/BaseChildItemHandler.cs
+++ b/Pilz.Net/Api/Server/BaseChildItemHandler.cs
@@ -1,5 +1,5 @@
-using Pilz.Extensions.Reflection;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Extensions.Reflection;
 using Pilz.Net.Extensions;
 using System.Diagnostics;
 
diff --git a/Pilz.Net/Api/Server/BaseHandler.cs b/Pilz.Net/Api/Server/BaseHandler.cs
index 1882592..c10c206 100644
--- a/Pilz.Net/Api/Server/BaseHandler.cs
+++ b/Pilz.Net/Api/Server/BaseHandler.cs
@@ -1,5 +1,5 @@
-using Pilz.Extensions.Reflection;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Extensions.Reflection;
 using Pilz.Net.Extensions;
 using System.Diagnostics;
 
diff --git a/Pilz.Net/Api/Server/BaseItemHandler.cs b/Pilz.Net/Api/Server/BaseItemHandler.cs
index 083f894..3af9c2a 100644
--- a/Pilz.Net/Api/Server/BaseItemHandler.cs
+++ b/Pilz.Net/Api/Server/BaseItemHandler.cs
@@ -1,5 +1,5 @@
-using Pilz.Extensions.Reflection;
-using Pilz.Net.Data;
+using Pilz.Data;
+using Pilz.Extensions.Reflection;
 using Pilz.Net.Extensions;
 using System.Diagnostics;
 
diff --git a/Pilz.Net/Pilz.Net.csproj b/Pilz.Net/Pilz.Net.csproj
index 95f73cf..ff8731d 100644
--- a/Pilz.Net/Pilz.Net.csproj
+++ b/Pilz.Net/Pilz.Net.csproj
@@ -18,6 +18,11 @@
   
   <ItemGroup>
     <ProjectReference Include="..\Pilz.Extensions\Pilz.Extensions.csproj" />
+    <ProjectReference Include="..\Pilz\Pilz.csproj" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <Folder Include="Data\" />
   </ItemGroup>
   
 </Project>
\ No newline at end of file
diff --git a/Pilz.Threading/Pilz.Threading.vbproj b/Pilz.Threading/Pilz.Threading.vbproj
index 0d03e2b..d540002 100644
--- a/Pilz.Threading/Pilz.Threading.vbproj
+++ b/Pilz.Threading/Pilz.Threading.vbproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <MyType>Windows</MyType>
-    <TargetFrameworks>net6.0-windows;net8.0-windows;netframework4.8</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
     <DocumentationFile>Pilz.Threading.xml</DocumentationFile>
diff --git a/Pilz.UI.Telerik/Pilz.UI.Telerik.csproj b/Pilz.UI.Telerik/Pilz.UI.Telerik.csproj
index 5d156a3..789d9dc 100644
--- a/Pilz.UI.Telerik/Pilz.UI.Telerik.csproj
+++ b/Pilz.UI.Telerik/Pilz.UI.Telerik.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
-    <TargetFrameworks>net8.0-windows;netframework4.8</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>annotations</Nullable>
diff --git a/Pilz.UI/Pilz.UI.csproj b/Pilz.UI/Pilz.UI.csproj
index 08707fc..d780857 100644
--- a/Pilz.UI/Pilz.UI.csproj
+++ b/Pilz.UI/Pilz.UI.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <MyType>Windows</MyType>
-    <TargetFrameworks>net8.0-windows;netframework4.8</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <DocumentationFile>Pilz.UI.xml</DocumentationFile>
     <UseWindowsForms>true</UseWindowsForms>
diff --git a/Pilz.Win32/Pilz.Win32.csproj b/Pilz.Win32/Pilz.Win32.csproj
index bfb8a0c..2bcdcd0 100644
--- a/Pilz.Win32/Pilz.Win32.csproj
+++ b/Pilz.Win32/Pilz.Win32.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
-    <TargetFrameworks>net8.0-windows;netframework4.8</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <UseWindowsForms>true</UseWindowsForms>
     <Version>2.1.1</Version>
diff --git a/Pilz.Net/Data/DataManager.cs b/Pilz/Data/DataManager.cs
similarity index 99%
rename from Pilz.Net/Data/DataManager.cs
rename to Pilz/Data/DataManager.cs
index 053ab40..ba89d19 100644
--- a/Pilz.Net/Data/DataManager.cs
+++ b/Pilz/Data/DataManager.cs
@@ -1,6 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 
-namespace Pilz.Net.Data;
+namespace Pilz.Data;
 
 public abstract class DataManager : IDataManager
 {
diff --git a/Pilz.Net/Data/DataManagerEventArgs.cs b/Pilz/Data/DataManagerEventArgs.cs
similarity index 88%
rename from Pilz.Net/Data/DataManagerEventArgs.cs
rename to Pilz/Data/DataManagerEventArgs.cs
index 85b0978..b6e5027 100644
--- a/Pilz.Net/Data/DataManagerEventArgs.cs
+++ b/Pilz/Data/DataManagerEventArgs.cs
@@ -1,4 +1,4 @@
-namespace Pilz.Net.Data;
+namespace Pilz.Data;
 
 public class DataManagerEventArgs(IDataManager manager) : EventArgs
 {
diff --git a/Pilz.Net/Data/IDataManager.cs b/Pilz/Data/IDataManager.cs
similarity index 98%
rename from Pilz.Net/Data/IDataManager.cs
rename to Pilz/Data/IDataManager.cs
index 5117a65..3741493 100644
--- a/Pilz.Net/Data/IDataManager.cs
+++ b/Pilz/Data/IDataManager.cs
@@ -1,6 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 
-namespace Pilz.Net.Data;
+namespace Pilz.Data;
 
 public interface IDataManager
 {
diff --git a/Pilz.Net/Data/IDataObject.cs b/Pilz/Data/IDataObject.cs
similarity index 68%
rename from Pilz.Net/Data/IDataObject.cs
rename to Pilz/Data/IDataObject.cs
index 562e335..964fafe 100644
--- a/Pilz.Net/Data/IDataObject.cs
+++ b/Pilz/Data/IDataObject.cs
@@ -1,4 +1,4 @@
-namespace Pilz.Net.Data;
+namespace Pilz.Data;
 
 public interface IDataObject
 {
diff --git a/Pilz/Data/PropertyObject.cs b/Pilz/Data/PropertyObject.cs
new file mode 100644
index 0000000..befad56
--- /dev/null
+++ b/Pilz/Data/PropertyObject.cs
@@ -0,0 +1,47 @@
+namespace Pilz.Data;
+
+#pragma warning disable CA2231
+
+[Serializable]
+public struct PropertyObject<T>(T value) where T : class
+{
+    private readonly bool hasValue = true; // Do not rename (binary serialization)
+    internal T? value = value; // Do not rename (binary serialization) or make readonly (can be mutated in ToString, etc.)
+
+    public static PropertyObject<T> Empty => default;
+
+    public readonly bool HasValue
+    {
+        get => hasValue;
+    }
+
+    public readonly T? Value
+    {
+        get
+        {
+            if (!hasValue)
+                throw new InvalidOperationException("No value");
+            return value;
+        }
+    }
+
+    public readonly T? GetValueOrDefault() => value;
+
+    public readonly T? GetValueOrDefault(T defaultValue) =>
+        hasValue ? value : defaultValue;
+
+    public override readonly bool Equals(object? other)
+    {
+        if (!hasValue || value is null) return other == null;
+        if (other == null) return false;
+        return value.Equals(other);
+    }
+
+    public override readonly int GetHashCode() => hasValue && value is not null ? value.GetHashCode() : 0;
+
+    public override readonly string? ToString() => hasValue && value is not null ? value.ToString() : string.Empty;
+
+    public static implicit operator PropertyObject<T>(T value) => new(value);
+
+    public static explicit operator T?(PropertyObject<T> value) => value.Value;
+}
\ No newline at end of file
diff --git a/Pilz/Data/PropertyValue.cs b/Pilz/Data/PropertyValue.cs
new file mode 100644
index 0000000..b9115cb
--- /dev/null
+++ b/Pilz/Data/PropertyValue.cs
@@ -0,0 +1,54 @@
+using Newtonsoft.Json;
+
+namespace Pilz.Data;
+
+#pragma warning disable CA2231
+
+[Serializable]
+public struct PropertyValue<T>(T value) where T : struct
+{
+    [JsonProperty(PropertyName = "HasValue")]
+    private readonly bool hasValue = true; // Do not rename (binary serialization)
+    [JsonProperty(PropertyName = "Value")]
+    internal T value = value; // Do not rename (binary serialization) or make readonly (can be mutated in ToString, etc.)
+
+    [JsonIgnore]
+    public static PropertyValue<T> Empty => default;
+
+    [JsonIgnore]
+    public readonly bool HasValue
+    {
+        get => hasValue;
+    }
+
+    [JsonIgnore]
+    public readonly T Value
+    {
+        get
+        {
+            if (!hasValue)
+                throw new InvalidOperationException("No value");
+            return value;
+        }
+    }
+
+    public readonly T GetValueOrDefault() => value;
+
+    public readonly T GetValueOrDefault(T defaultValue) =>
+        hasValue ? value : defaultValue;
+
+    public override readonly bool Equals(object? other)
+    {
+        if (!hasValue) return other == null;
+        if (other == null) return false;
+        return value.Equals(other);
+    }
+
+    public override readonly int GetHashCode() => hasValue ? value.GetHashCode() : 0;
+
+    public override readonly string? ToString() => hasValue ? value.ToString() : string.Empty;
+
+    public static implicit operator PropertyValue<T>(T value) => new(value);
+
+    public static explicit operator T(PropertyValue<T> value) => value.Value;
+}
\ No newline at end of file
diff --git a/Pilz/Pilz.csproj b/Pilz/Pilz.csproj
index c41f657..a262610 100644
--- a/Pilz/Pilz.csproj
+++ b/Pilz/Pilz.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
-    <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net8.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>annotations</Nullable>