public Form2(Form1 form1) { this.form1 = form1; InitializeComponent(); loginWin = new LoginWin(); registerWin = new RegisterWin(); groupBox = this.groupBox1; }
private void label2_Click(object sender, EventArgs e) {//登录 form2 = new Form2(this); LoginWin loginWin = form2.loginWin; form2.Show(); loginWin.Show(); form2.groupBox.Controls.Clear(); form2.groupBox.Controls.Add(loginWin); }