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Occurs before a form is displayed for the first time.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
You can use this event to perform tasks such as allocating resources used by the form.
For more information about handling events, see Handling and Raising Events.
The following code example demonstrates how to use the SetDesktopLocation, , Activated, and Activate members. To run the example, paste the following code in a form called Form1 containing a Button called Button1 and two Label controls called Label1 and Label2.
Shared x As Integer = 200
Shared y As Integer = 200
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
' Create a new Form1 and set its Visible property to true.
Dim form2 As New Form1
form2.Visible = True
' Set the new form's desktop location so it appears below and
' to the right of the current form.
x += 30
y += 30
' Keep the current form active by calling the Activate method.
Me.Button1.Enabled = False
' Updates the label text to reflect the current values of x and y,
' which was were incremented in the Button1 control's click event.
Private Sub Form1_Activated(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Activated
Label1.Text = "x: " & x & " y: " & y
Label2.Text = "Number of forms currently open: " & count
Shared count As Integer = 0
Private Sub Form1_Closed(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Closed
count -= 1
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
count += 1
Available since 1.1