Question

VB.net如何时间相减，我正在做一个提示还书的窗口，怎么让现在日期减去当时借书的日期，然后显示出小于5天

代码。主要说下怎么让日期相减就好了。急求！！！！！快的能多给分！

Answer 1

给你个例子：
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim MyEndDate As New DateTime(2012, 8, 8)
Dim MyStartDate As DateTime = DateTime.Now
Dim MySpan As TimeSpan = MyEndDate.Subtract(MyStartDate)
Dim MyInfo As String = "离2012年8月8日还有" + _
Math.Round(MySpan.TotalDays, 0).ToString() + "天"
MessageBox.Show(MyInfo, "信息", _
MessageBoxButtons.OK, MessageBoxIcon.Information)
End Sub