主题：请教：文本框输入时，如何控制光标选中特定字符？

看那凭证号，应该只需要改编号，年月以及之前的自动生成，无需修改。

TimerTick

Dim txt As WinForm.TextBox = e.Form.Controls("TextBox1")
txt.Text = "华信-" & Format(Date.Today,"yy-MM") & "-00#"
txt.SelectionStart = 9
txt.SelectionLength = 2
e.Form.TimerEnabled = False