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Code Analyzer for C#

There is a newer version: 10.2.0.105762

Why is this an issue?
When creating a custom Markup Extension
that accepts parameters in WPF, the ConstructorArgument markup
must be used to identify the discrete properties that match these parameters. However since this is done via a string, the compiler won’t give you any
warning in case there are typos.
This rule raises an issue when the string argument to ConstructorArgumentAttribute doesn’t match any parameter of any constructor.
How to fix it
Code examples
Noncompliant code example
using System;

namespace MyLibrary
{
  public class MyExtension : MarkupExtension
  {
    public MyExtension() { }

    public MyExtension(object value1)
    {
      Value1 = value1;
    }

    [ConstructorArgument("value2")]   // Noncompliant
    public object Value1 { get; set; }
  }
}

Compliant solution
using System;

namespace MyLibrary
{
  public class MyExtension : MarkupExtension
  {
    public MyExtension() { }

    public MyExtension(object value1)
    {
      Value1 = value1;
    }

    [ConstructorArgument("value1")]
    public object Value1 { get; set; }
  }
}

Resources
Documentation

   Microsoft Learn - Markup Extensions and
  WPF XAML 
   Microsoft Learn - MarkupExtension Class 
   Microsoft Learn - ConstructorArgumentAttribute Class