En2Fr

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

            textBox2.Text = textBox1.Text.Trim().ToLower()
                .Replace("a", "ا").Replace("b", "ب").Replace("c", "ک").Replace("d", "د")
                .Replace("e", "ا").Replace("f", "ف").Replace("g", "گ").Replace("h", "ه")
                .Replace("i", "ی").Replace("j", "ج").Replace("k", "ک").Replace("l", "ل")
                .Replace("m", "م").Replace("n", "ن").Replace("o", "و").Replace("p", "پ")
                .Replace("q", "ک").Replace("r", "ر").Replace("s", "س").Replace("t", "ت")
                .Replace("u", "ا").Replace("v", "و").Replace("w", "و").Replace("x", "")
                .Replace("y", "ی").Replace("z", "ز");
               
        }