Entity Framework Core 1.0 CurrentValues.SetValues() does not exist

Question

I\'m attempting to update an entity and its related child entities using Entity Framework Core 1.0 RC 1, where the entities are detached from DbContext. I\'ve done this prev

Answer 1

As you have noticed, this API is not implemented yet in EF Core. See this work item: https://github.com/aspnet/EntityFramework/issues/1200

Answer 2

I know this is an old question but I ran into this issue today, and it appears it still isn't implemented in EF Core. So I wrote an extension method to use in the meantime that will update any object's properties with the matching values of any other object.

public static class EFUpdateProperties
{
    public static TOrig UpdateProperties<TOrig, TDTO>(this TOrig original, TDTO dto)
    {
        var origProps = typeof(TOrig).GetProperties();
        var dtoProps = typeof(TDTO).GetProperties();

        foreach(PropertyInfo dtoProp in dtoProps)
        {
            origProps
                .Where(origProp => origProp.Name == dtoProp.Name)
                .Single()
                .SetMethod.Invoke(original, new Object[] 
                    { 
                    dtoProp.GetMethod.Invoke(dto, null) });                
                    }
                );                

        return original;
    }
}

Usage:

public async Task UpdateEntity(EditViewModel editDto)
    {
        // Get entry from context
        var entry = await _context.Items.Where(p => p.ID == editDto.Id).FirstOrDefaultAsync();                

        // Update properties
        entry.UpdateProperties(editDto);

        // Save Changes
        await _context.SaveChangesAsync();
    }