Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
TextBox1.Text = Now.Date
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox2.Text() = TextBox1.Text 加上15天怎么写？
End Sub

TextBox2.Text = Date.Now.ToString("yyyy-") & Date.Now.ToString("MM-") & Date.Now().ToString("dd") + 15

这样就超出了一个月的天数啦。。~？？

那就加个判断就行了。

TextBox2.Text = CDate(TextBox1.Text).Date.AddDays(15)

谢谢4楼的可以了