**How it started?**

I wanted to add two columns, that are not in business objec collection into radGridView. Specifically NewUrl anad NewIdOnFilehost. :)

**So what i tried to do?**

I put this into grid

```
radGridViewReuploadStatus.ItemsSource = FileHostings.Filesonic.getdAllDeletedLinks();

```

Then i added them new columns

```
<telerik:GridViewColumn Header="New F.H.Id" UniqueName="NewFilehostId" Width="*"></telerik:GridViewColumn>
                <telerik:GridViewColumn Header="New URL" UniqueName="NewUrl" Width="*"></telerik:GridViewColumn>

```

**So what is problem?**

radGridViewReuploadStatus.Rows does not exists.
I don't know why they did not added it to wpf radGridView, it is in its aspx version. I was able to get rows using getChildsOfType, but this is obviously not ideal way.

**What i did next?**

```
class dlExtended : DownloadLink {
        public string NewUrl { get; set; }
        public string NewIdOnFilehost { get; set; }
    }

```

**Finally the PROBLEM - what basic i don't understand**

How do i make dlExtended from DownloadLink? (i know it is wrong name convention, it is just for example :) )
And how do i make list of dlExtended from collection of DownloadLink? There must be better way then using foreach!

**Now i'm probably doing it wrong**

So now i should do constructor and set EACH property of dlExneded according to one passed in passed DownloadLink?!

Well maybe it is doable by reflection LIKE this

```
public DownloadLinkExtended(DownloadLink origDl){
        PropertyInfo[] myObjectProperties = origDl.GetType().GetProperties(); //BindingFlags.Public | BindingFlags.NonPublic
        foreach (PropertyInfo pi in myObjectProperties)
        {
            if (pi.GetValue(origDl, null) != null)
            {
                pi.SetValue(this, pi.GetValue(origDl, null), null);
            }
        }
    }

```

Well this is stupid. **So what i don't get about extending the class and adding new properties to it?**

I know that EF4 classes are partial and i can add properties to them simply via partial class, but i want these only for the grid and not anywhere else.