Trying to call a method in one form from a different form [resolved]

[nkad]

I have a method in a main form that updates the UI. I am trying to call this method from a different form.


So on my main form, a new form is created

        Dim ScheduleTrip As New frmScheduleTrip
        Me.AddOwnedForm(ScheduleTrip)
        ScheduleTrip.Show()

In frmScheduleTrip I am trying to refresh UI elements on the main form.

Me.GetType.InvokeMember("RefreshUI", Reflection.BindingFlags.InvokeMethod, Me.Owner.GetType.DefaultBinder, Me.Owner.Handle, New Object)

But I get System.InvalidCastException

I'm obviously doing something wrong, any ideas?

[jmcilhinney]

Whay aren't you just casting the Owner property to the appropriate type and calling the method directly?

DirectCast(Me.Owner, MainForm).RefreshUI()

Is there some issue like the child form may be owned by various forms of different types, or that you are trying to cross a thread boundary?

[nkad]

Why? Well, because I'm a n00b. lol. I still don't know all the in's and out's of .NET.

Thanks for pointing that out to me. It works.

[jmcilhinney]

Sorry. With the number of posts you have I assumed a greater level of experience. I thought that there must be a specific reason you were trying such an indirect method, but unfamiliarity is as good a reason as any.