右键菜单用ContextMenuStrip实现后，第一次点击鼠标右键菜单不出来。

[dushuang]

第二次以后就正常显示菜单了，不知道什么原因。

Private Sub frmRoomDisplay_MouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseClick, pnlFlow.MouseClick, pnlExg.MouseClick
If e.Button = Windows.Forms.MouseButtons.Right Then
If sender.Equals(pnlFlow) Then
pnlFlow.ContextMenuStrip = cmsRoomDisplay
ElseIf sender.Equals(pnlExg) Then
pnlExg.ContextMenuStrip = cmsRoomDisplay
ElseIf sender.Equals(Me) Then
Me.ContextMenuStrip = cmsRoomDisplay
End If
End If
End Sub

[古今多少事]

加上：cmsRoomDisplay.show()

[lyc120]

正在学C#，
不过了解一下

[dushuang]

加上：cmsRoomDisplay.show()大多数时候是显示了，可是第一次显示的时候位置不对，右键菜单跑道左上角显示了。

[jiangjubo]

Private Sub tableDataGridView_CellMouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles tableDataGridView.CellMouseDown
Dim p As New Point()
If (e.Button = MouseButtons.Right) Then
p.X = MousePosition.X
p.Y = MousePosition.Y
Me.cms2.Show(p)
End If
End Sub