How to make TextBox only read value in Asp.Net.

Here is the solution.

If you want to TextBox has only read value then write  the simple code in Page_load  or the code where you want  the TextBox has only read value. The Code is given

Textbox_id.Attributes.Add(“readonly”,”readonly”);

Example:

Default.aspx:-

<div>

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" >

            </asp:ScriptManager>

<asp:TextBox ID="txt_Student_Date_Of_Birth" runat="server"></asp:TextBox>

<asp:CalendarExtender ID="CalendarExtender1" runat="server"

                    TargetControlID="txt_Student_Date_Of_Birth" Format="dd-MMM-yyyy"

                    PopupPosition="Right"  DefaultView="Years">

           </asp:CalendarExtender>

</div>

Default.aspx.cs:-

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.IO;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

       

            txt_Student_Date_Of_Birth.Attributes.Add("readonly", "readonly");

           

        }

    }

}

Run this code. When you pick up the date from the calendar , textbox will take a date but it is not editable means it is read only.