Hi all,

I've been bashing my head against this now for about a day - all I want to do is have a media picker on a custom section. The page loads fine without the Picker on it, so I know it's something to do with the control. I've followed 

on my ASPX page I have:

<asp:PlaceHolder ID="pickerPlaceHolder" runat="server"></asp:PlaceHolder>

then in code-behind file I have:

class MediaPickerDataExtractor : IData
{
    private object _value;
    public MediaPickerDataExtractor() { }
    public MediaPickerDataExtractor(object o)
    {
        Value = o;
    }
    #region IData Members
    public void Delete()
    {
        throw new NotImplementedException();
    }
    public void MakeNew(int PropertyId)
    {
        throw new NotImplementedException();
    }
    public int PropertyId
    {
        set { throw new NotImplementedException(); }
    }
    public System.Xml.XmlNode ToXMl(System.Xml.XmlDocument d)
    {
        throw new NotImplementedException();
    }
    public object Value
    {
        get
        {
            return _value;
        }
        set
        {
            _value = value;
        }
    }
    #endregion
}

Then I have at the top of my page class:

private umbraco.editorControls.mediaChooser _mediaPicker;
private MediaPickerDataExtractor _mediaPickerExtractor;

Before finally in the OnInit function:

_mediaPickerExtractor = new MediaPickerDataExtractor();
 _mediaPicker = new umbraco.editorControls.mediaChooser(_mediaPickerExtractor, true, true);
 _mediaPicker.Value = "";
//_mediaPicker.ID = "mediapicker";
pickerPlaceHolder.Controls.Add(_mediaPicker);
base.OnInit(e);

Custom section is registered fine, but when I click on the page, I get the following:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.editorControls.mediaChooser.CreateChildControls() +136
   System.Web.UI.Control.EnsureChildControls() +102
   MPUManagementPage.OnInit(EventArgs e) +197
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140

Does anyone have any ideas?

Many thanks

Simon