Rop.ProxyGenerator.Annotations 1.0.14

.NET Standard 2.0
dotnet add package Rop.ProxyGenerator.Annotations --version 1.0.14
NuGet\Install-Package Rop.ProxyGenerator.Annotations -Version 1.0.14
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Rop.ProxyGenerator.Annotations" Version="1.0.14" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Rop.ProxyGenerator.Annotations --version 1.0.14
#r "nuget: Rop.ProxyGenerator.Annotations, 1.0.14"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Rop.ProxyGenerator.Annotations as a Cake Addin
#addin nuget:?package=Rop.ProxyGenerator.Annotations&version=1.0.14

// Install Rop.ProxyGenerator.Annotations as a Cake Tool
#tool nuget:?package=Rop.ProxyGenerator.Annotations&version=1.0.14



Rop.ProxyGenerator is a source generator package to automatic proxy of interfaces. It can be used to provide Aspect Oriented Programming to c# via a "proxy".

The package is published in nuget as 'Rop.ProxyGenerator'


I want to add to any winform control a "IControlValue" standard interface.

public interface IControlValue<T>
    event EventHandler ControlValueChanged;
    T ControlValue { get; set; }

The interface has a common implementation but C# can't allow multiple inheritance.

To allow inject IControlValue logic to any winform control we derive a control with this syntax:

 [ProxyOf("IControlValue<int>", nameof(_controlValueProxy))]
    public partial class TextBoxValue : TextBox, IControlValue<int>
        private readonly IControlValue<int> _controlValueProxy;
        public TextBoxValue()
            _controlValueProxy = new TextBoxValueAop(this);
        private class TextBoxValueAop : ControlValueAop<TextBoxValue, int>
            public TextBoxValueAop(TextBoxValue parent) : base(parent){}

The constructor creates the adapted logic to our class. That logic will be automaticly injected to code via rop.proxygenerator. The source generator.

The generated code will be a proxy for each IControlValue member.

// Autogenerated code for Proxy class
	public partial class TextBoxValue
            public event EventHandler ControlValueChanged{ 
	    public virtual void OnControlValueChanged()
        // Symbol 'ControlValue' excluded

I can "exclude" a member to force his declaration via attributes. In this case. "ControlValue" depends of the type of the control. So, I must hard code in my class

public partial class TextBoxValue{
    public virtual int ControlValue
            get => int.TryParse(base.Text, out int v) ? v : -1;
            set => base.Text = value.ToString();

The ASPECT code to incorporate as proxy is derived from a abstract common logic of type ControlValueAOP

public abstract class ControlValueAop<C, T> : IControlValue<T> where C : Control, IControlValue<T>
    public C Parent { get; }

    public event EventHandler ControlValueChanged;
    public virtual void OnControlValueChanged()
      ControlValueChanged?.Invoke(this.Parent, EventArgs.Empty);
    public virtual T ControlValue
      get => this.Parent.ControlValue;
      set => this.Parent.ControlValue = value;
    protected ControlValueAop(C parent)
      this.Parent = parent;


Attibutes to decorate a class to contain a proxy.

public class ProxyOfAttribute:Attribute
    public ProxyOfAttribute(Type interfacename, string fieldname,string[] exclude=null)

Attibutes to include other attributes defined in an interface

public class IncludeNextAttributesAttribute : System.Attribute {}

Attribute to Exclude a Member

 public class ExcludeAttribute : Attribute { }

Attibutes to Override Members

public class OverrideNewAttribute : Attribute { }
public class OverrideNoBaseAttribute : Attribute { }
public class OverrideWithPreBaseAttribute : Attribute { }
public class OverrideWithPostBaseAttribute : Attribute { }

Attributes to force Explicit Implementation of Proxy Interface

public class ExplicitAttribute : Attribute { }
public class ExplicitOverrideNoBaseAttribute : Attribute { }
public class ExplicitOverrideWithPreBaseAttribute : Attribute { }
public class ExplicitOverrideWithPostBaseAttribute : Attribute { }


The source generator that create the proxy as partial class. Must be included as:

  • OutputItemType="Analyzer"
  • ReferenceOutputAssembly="false"

(C)2022 Ramón Ordiales Plaza

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows net7.0 net7.0-android net7.0-ios net7.0-maccatalyst net7.0-macos net7.0-tvos net7.0-windows
.NET Core netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard2.0 netstandard2.1
.NET Framework net461 net462 net463 net47 net471 net472 net48 net481
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.
  • .NETStandard 2.0

    • No dependencies.
  • .NETStandard 2.1

    • No dependencies.

NuGet packages (6)

Showing the top 5 NuGet packages that depend on Rop.ProxyGenerator.Annotations:

Package Downloads

Helper classes for Winforms


Create KeyValue ListBox and ComboBox


Create compatible Items form ListBox and ComboBox


Helper classes for GDI+ Colors and KeyValueControls


Create Control with value

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.14 161 1/14/2023
1.0.13 667 6/16/2022
1.0.12 275 6/16/2022
1.0.11 275 6/16/2022
1.0.10 267 6/15/2022
1.0.9 267 6/15/2022
1.0.8 275 6/15/2022
1.0.7 277 6/15/2022
1.0.6 265 6/15/2022
1.0.5 278 6/14/2022
1.0.4 277 6/7/2022
1.0.3 271 6/7/2022
1.0.2 276 6/6/2022
1.0.1 283 6/3/2022