form opening on load - vb.net

Question

My program was opening a different form to what I wanted it to. The answers solved it.
Basically I wanted to stop a form opening when the program started, but when it opened manually (on a button press), it updated the data. The second part of the problem has not been solved, but the first part has been.

Answer 1

You can try something like this:
Public Class HomeForm
Private WithEvents m_DataChangeForm As DataChangeForm
Private Sub HomeForm_Load(sender As Object, e As EventArgs) Handles MyBase.Load
m_DataChangeForm = New DataChangeForm()
m_DataChangeForm.Show()
End Sub
Private Sub OnDataSourceChanged(sender As Object, args As EventArgs) Handles m_DataChangeForm.OnDataSourceChanged
MessageBox.Show("Data source changed!")
End Sub
End Class
Public Class DataChangeForm
Inherits Form
Public Event OnDataSourceChanged(sender As Object, args As EventArgs)
Private WithEvents m_Button As Button
Public Sub New()
m_Button = New Button()
m_Button.Text = "Change"
m_Button.Parent = Me
End Sub
Public Sub buttonClick(sender As Object, args As EventArgs) Handles m_Button.Click
RaiseEvent OnDataSourceChanged(sender, args)
Me.Close()
End Sub
End Class
Reason your form is displayed before HomeForm is becaouse you call ShowDialog, it blocks until DataChangeForm is closed.

Answer 2

You should move your code from "Load" to "Shown" Event.
Private Sub Homefrm_Shown(sender As Object, e As EventArgs) Handles Me.Shown
Using fp = New dataChangefrm(m_database)
If fp.ShowDialog() = DialogResult.OK Then
uwgHome.DataSource = Nothing
loadData()
End If
End Using
Me.Location = New Point(0, 0)
loadData()
End Sub
Please have a look on the Handle in the first line. It depends on your Project.