dynamic database driven menus in VB.Net

Answer 1

A simple way to encapsulate user info is with a Helper Class, where you store the context info.

Public Class Question1739163
    Class HelperUserCall
        Public userId As String

        Sub New(ByVal id As String)
            userId = id
        End Sub

        Public Sub OnClick()
            MsgBox(Me.userId)
        End Sub
    End Class
    Private Sub Question1739163_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim t As New ToolStripMenuItem("Users", Nothing, AddressOf user_mousedown)
        MenuStrip1.Items.Add(t)
    End Sub

    Public Sub user_mousedown()
        Dim s As New ContextMenuStrip
        Dim a As HelperUserCall

        a = New HelperUserCall("u1")
        s.Items.Add(a.userId, Nothing, AddressOf a.OnClick)

        a = New HelperUserCall("u2")
        s.Items.Add(a.userId, Nothing, AddressOf a.OnClick)

        s.Items.Add("New User", Nothing, AddressOf add_new)
        s.Show(Control.MousePosition)
    End Sub

    Sub add_new()
        MsgBox("add new")
    End Sub
End Class

You could improve the helper class adding the reference to database in the constructor, and retrieving the user info when the user click into the option.