请教老师，未升级前以下代码正常在DrawCell运行，升级后，只能在表格式样为FOXTABLE经典蓝/银/黑正常运行，其他表格式样均不能运行

\'------------单元格·模拟按钮
If e.Col.name= "项目登记" Then
    e.StartDraw()
    Dim fnt As New Font("微软雅黑",9)
    Dim w As Integer = e.Width-13 \' - 4
    Dim h As Integer = e.Height-14
    Dim x As Integer = e.x \'+ (e.Width - w)/2
    Dim y As Integer = e.y
    Dim msg As String
    Dim br As object
    If e.MouseHover = False \'如果鼠标不在此单元格
        e.Graphics.DrawImage(getimage(projectPath & "Images\\按钮启动.png"), e.x+6,e.y+6,w,h)\' + 0, 70, 23) \'显示第一个图标
        br = New SolidBrush(color.Navy)
        msg = ""
    Else
        e.Graphics.DrawImage(getimage(projectPath & "Images\\按钮修改.png"), e.x+6,e.y+6,w,h)\' + 0, 70, 23) \'显示第二个图标
        br = New SolidBrush(color.Navy)
        msg = ""
    End If
    e.EndDraw()
End If

请教程老师，这里怎样判断图片是否存在，请教代码应该怎样写