What I meant in manually refreshing the grid is the user need to manually click the refresh icon in the lower right portion of the WebGrid.

Currently I have no timeline for a fix for this issue.

Per your request, I have also try using FlyPostBackManager to subsitute the UpdatePanel. However, the issue still persist. Attached is the modified sample using FlyPostBackManager.

The fix will be included in the next hotfix which is scheduled to be release in a few week at the latest.

In my test, in order to attach the ObjectCreated event handler you will need to set the event handler in the design mode. Here is the snippet:

<isdatasource:isdatasource runat="server" ID="ISDSSchedule" 
    SchemaName="WebScheduler.dsSchedule" onobjectcreated="ISDSSchedule_ObjectCreated">

As you requested, here is the event handler / reflection code in VB: 

Protected Sub ISDSSchedule_ObjectCreated(ByVal sender As Object, ByVal e As ISNet.WebUI.DataSource.ISDataSourceEventArgs)

    Dim conn As OleDbConnection = e.ObjectInstance.GetType().GetProperty("Connection", BindingFlags.NonPublic + BindingFlags.Instance).GetValue(e.ObjectInstance, Nothing)
    conn.ConnectionString = 'New connection string

End Sub

In order to display the drop down icon, we are using Webdings font. If you would like to override the DropDown style CSS please add this line in your DropDown custom style:

font-family: Webdings;

Regarding the other issue, our default CSS has already taken account the margin, padding, border, dimension in order to show the component correctly. If you would like to orverride the CSS please set the attribute for your custom css as well. You could analyse the default CSS style by using DOM inspector for example the Developer Tools in IE8 or Firebug in Firefox.

The Timeline event move operation JS error is caused by a bug. I have submitted a bug report to the developer. Since you are using a nightly build version, some issue should be expected, since the build has not fully complete the testing cycle.

Regarding the multiple day event movement in the month view, currently WebSchduler only support moving time based single day event. WebScheduler have not support moving event for all day event or multiple day event in month view.

We will inform you if there is any update / progress regarding this issue.