private void button1_Click(object sender, EventArgs e)
{
this.Close();
登录 form = new 登录();
form.Show();
}
public Form2(登录 f1) : this()
{
this.f1 = f1;
string aa = f1.StringValue;
}
public Form3(登录 f1) : this()
{
this.f1 = f1;
textBox1.Text = f1.StringValue;
}