在新窗体关闭前更新主窗体Manager 中的DataGridView
例如:这个按钮是新窗体关闭按钮,不好意思用vb写的,稍微改动一下就可以
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim dtt As New DataTable
//这里给dtt赋值
Form1.DataGridView1.DataSource = dtt
Me.Close()
End Sub