using System.Collections; Hashtable ht = new Hashtable(); private void Form1_Load(object sender, EventArgs e) { Form2 frm2 = new Form2(); Form3 frm3 = new Form3(); HashTableAddForm("Form2", frm2); HashTableAddForm("Form3", frm3); } private void button1_Click(object sender, EventArgs e) { HashTableShowForm("Form2"); } private void HashTableAddForm(string sKey, Form form) { if (..