   private void Form1_Load(object sender, EventArgs e)
        {
            label1.Text = "String one";
            label2.Text = "String two";
            label3.Text = "";
            button1.Text = " Search";
            button2.Text = " Upper";
            button3.Text = " Lower";
            button4.Text = " Trim";
            button5.Text = " Insert";
            button6.Text = " Remove";
        }
