New Post: "ButtonChrome" not included in namespace "xmlns:chrome="clr-namespace:Xceed.Wpf.Toolkit.Chromes"

Hi,

I don't understand the first problem : The Arrow of the DropDownButton left aligned which you want to place on right ?

For the second question : Trigger the MouseOver on the DropDownButton, you can catch the MouseEnter event :

<xctk:DropDownButton x:Name="_dropDownButton"
                           Content="Click Me"
                           Width="200"
                           Height="50"
                           MouseEnter="DropDownButton_MouseEnter_1">

 private void DropDownButton_MouseEnter_1( object sender, MouseEventArgs e )
    {
     // Do Stuff
    }