How to pass value from one Form to another Form in Windows Applicationj

With the help of Form' Tag property, we can pass values from 1 form to another

In Form One, any event

private void btn_submit(Object sender, Eventargs e)
{
   try
   {
     Form1 obj = new Form1();
     obj.Tag = txt_username.Text.Trim();
   }
   catch(Exception ex)
   {
     throw ex;
   }
}

In Form Two,
private void Form2_Load()
{
   Form1 obj = new Form1();
   lbl_user_name.Text = obj.Tag;
}