Hi Bubzuru,
Thank you for your continued interest in Syncfusion products.
Please refer to the below code snippet that will show you how to access Mdi child form and add Essential Edit control to that form.
Dim frm As Form = CType(IIf(TypeOf Me.ActiveMdiChild Is Form, Me.ActiveMdiChild, Nothing), Form)
Dim m_editControl As EditControl = New EditControl()
m_editControl.Dock = DockStyle.Fill
frm.Controls.Add(m_editControl)
Please refer to the attached sample for more details.
http://websamples.syncfusion.com/samples/Tools.Windows/71169/main.htmPlease let me know if this helps.
Regards,
Srirajan