TEXT BOX IN ASP.NET THROUGH CODING

Here is a form in which we want to display the test box on form loading.
<form id="form1" runat="server">
    <div>
       
    </div>
    </form>

In the page load method

protected void Page_Load(object sender, EventArgs e)
        {
            form1.Controls.Add(newTextBox());    //   newTextBox() is the method who return the test box
        }

private TextBox newTextBox()
        {
            TextBox tx = new TextBox();

            tx.ID = "TextBox1";
            tx.Text = "some text";
            tx.TextMode = TextBoxMode.MultiLine;
            tx.Attributes.Add("runat", "server");
            tx.Rows = 3;
            tx.AutoPostBack = true;
                    
            tx.TextChanged += new EventHandler(tb_TextChanged);    // event handelar
           
            return tx;
        }

Try and enjoy