[PersistenceModeAttribute(PersistenceMode.InnerProperty)]
public AnimationSettings ExpandAnimation { get; }

<PersistenceModeAttribute(PersistenceMode.InnerProperty)> 
Public ReadOnly Property ExpandAnimation As AnimationSettings
	Get

public:
[PersistenceModeAttribute(PersistenceMode::InnerProperty)]
property AnimationSettings^ ExpandAnimation {
	AnimationSettings^ get ();
}

[<PersistenceModeAttribute(PersistenceMode.InnerProperty)>]
member ExpandAnimation : AnimationSettings with get

Property Value

Use the ExpandAnimation property to customize the expand animation of KaxMenu. You can specify the Type and the Duration of the expand animation. To disable expand animation effects you should set the Type to AnimationType.None.
To customize the collapse animation you can use the CollapseAnimation property.

ASPX:

<kettic:KaxMenu ID="KaxMenu1" runat="server">

<ExpandAnimation Type="OutQuint" Duration="300" />

<Items>

<kettic:KaxMenuItem Text="News" >

<Items>

<kettic:KaxMenuItem Text="CNN" NavigateUrl="http://www.cnn.com" />

<kettic:KaxMenuItem Text="Google News" NavigateUrl="http://news.google.com" />

</Items>

</kettic:KaxMenuItem>

<kettic:KaxMenuItem Text="Sport" >

<Items>

<kettic:KaxMenuItem Text="ESPN" NavigateUrl="http://www.espn.com" />

<kettic:KaxMenuItem Text="Eurosport" NavigateUrl="http://www.eurosport.com" />

</Items>

</kettic:KaxMenuItem>

</Items>

</kettic:KaxMenu>

void Page_Load(object sender, EventArgs e)
{
    KaxMenu1.ExpandAnimation.Type = AnimationType.Linear;
    KaxMenu1.ExpandAnimation.Duration = 300;
}

Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    KaxMenu1.ExpandAnimation.Type = AnimationType.Linear
    KaxMenu1.ExpandAnimation.Duration = 300
End Sub

Reference