Pass item from one form to another

Question

here i have example of what i want in vb.net but i want in c # can any body help pliz

 

txt1.Text = "Morning"
Form2.TextBox1.Text = txt1.Text
Form2.ShowDialog()

have tried this but didnt work

//txt1 from form1

// txt2 from Form2

 txt1.Text = "Morning"

Form2 frm2 = New Form2()

frm2.txt2.Text= txt1.text

frm2.ShowDialog()