Dim y = e.form.Controls("DateTimePicker1").Year '指定年份
Dim m = e.form.Controls("DateTimePicker1").Month '指定月份
Dim dt1 As New Date(y, m, 1) '获取该月的第一天
Dim dt2 As New Date(y, m, Date.DaysInMonth(y,m)) '获取该月的最后一天
Dim ym=Format(dt1,"yyyyMM")
上面的代码Dim y = e.form.Controls("DateTimePicker1").Year '求指定年份出错
Dim m = e.form.Controls("DateTimePicker1").Month '求指定月份出错
需要怎样改才行呢