.NET: Is there a Class to copy properties of one class to another

Question

I wrote a function that copies the properties of one class to another so make a copy of an object.

So something like

MyObject myObject = myOtherObject.MyCustomCopy(myObject)

where myObject and myOtherObject are of the same type. I do it by bascually doing

myObject.prop1 = myOtherObject.prop1
myObject.prop2 = myOtherObject.prop2
myObject.prop3 = myOtherObject.prop3
return myObject

I am pretty sure in the past I used a .NET object that automaticaly did this, by reflection I guess, but can't remember it ... or an I imagining that such a method exists?

Yes I'm aware of auto mapper but i was sure (not so much now) that there is a .NET object that does the job. Maybe not!

Answer 1

You may take a look at AutoMapper.

Answer 2

 public static class ext
{
    public static void CopyAllTo<T>(this T source, T target)
    {
        var type = typeof(T);
        foreach (var sourceProperty in type.GetProperties())
        {
            var targetProperty = type.GetProperty(sourceProperty.Name);
            targetProperty.SetValue(target, sourceProperty.GetValue(source, null), null);
        }
        foreach (var sourceField in type.GetFields())
        {
            var targetField = type.GetField(sourceField.Name);
            targetField.SetValue(target, sourceField.GetValue(source));
        }
    }
}

Answer 3

I know the OP did not ask for a Type to another Type but my variant is one I use for DI in startup.cs for mismatches in configurations between cloud and local dev environment. My local class generally uses a Interface class behind the scenes to map the configurations. Then I use this method to copy properties where they match in name only. I am not checking property types since these are configurations. AutoMapper was suggested. I don't use AutoMapper because we are restricted by U.S. DOD to certain providers. Getting an ATO is hard enough just using .NET, we don't need any more grief.

  using System.Linq;
  public static class PropertyCopy
  {
    public static void CopyAllTo<T,T1>(this T source, T1 target)
    {
      var type = typeof(T);
      var type1 = typeof(T1);
      foreach (var sourceProperty in type.GetProperties())
      {
        foreach (var targetProperty in type1.GetProperties()
          .Where(targetProperty => sourceProperty.Name == targetProperty.Name)
          .Where(targetProperty => targetProperty.SetMethod != null))
        {
          targetProperty.SetValue(target, sourceProperty.GetValue(source, null), null);
        }
      }

      foreach (var sourceField in type.GetFields())
      {
        foreach (var targetField in type1.GetFields()
          .Where(targetField => sourceField.Name == targetField.Name))
        {
          targetField.SetValue(target, sourceField.GetValue(source));
        }
      }

    }
  }