做了个登陆界面 但实现不了跳转请教高手！！！

提问者：tkcag  |  浏览 次  |  提问时间：2017-02-24  |  回答数量：4

程序无出错但按了登陆键后没反应 请高手解答！！Public Class Form1Private Sub Txt1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Txt1.KeyDownIf e.KeyCode = Keys.Enter ThenIf Txt1.Text = \"\" ThenLab3.Text = \"用户名不能为空\"Lab3.Visible = TrueLab3.ForeColor = Color.RedTxt1.Text = \"\"Txt1.Focus()Exit SubElseIf Txt1.Text <> \"xxx\" ThenLab3.Text = \"用户名有错!\"Lab3.Visible = TrueLab3.ForeColor = Color.RedTxt1.Text = \"\"Txt1.Focus()Exit SubElseLab3.Visible = FalseTxt2.Focus()End IfEn