Question

How do you set the Textbox read only property to true or false using JavaScript in ASP.NET?

Answer 1

You can try

document.getElementById("textboxid").readOnly = true;

Answer 2

I find that document.getElementById( textbox-id ).readOnly=true sometimes doesn t work reliably.

Instead, try:

document.getElementById( textbox-id ).setAttribute( readonly , readonly ) and document.getElementById( textbox-id ).removeAttribute( readonly ).

A little verbose but it seems to be dependable.

Answer 3

document.getElementById( textbox-id ).readOnly=true should work

Answer 4

Try This :-

set Read Only False ( Editable TextBox)

document.getElementById("txtID").readOnly=false;

set Read Only true(Not Editable )

var v1=document.getElementById("txtID");
v1.setAttribute("readOnly","true");

This can work on IE and Firefox also.

Answer 5

Using asp.net, I believe you can do it this way :

myTextBox.Attributes.Add("readonly","readonly")

Answer 6

it depends on how you trigger the event. the key you are looking is textbox.clientid.

x.aspx code

<script type="text/javascript">

   function disable_textbox(tid) {
        var mytextbox = document.getElementById(tid);
         mytextbox.disabled=false
   }
</script>

code behind x.aspx.cs

    string frameScript = "<script language= javascript >" + "disable_textbox(" + tx.ClientID  ");</script>";
    Page.ClientScript.RegisterStartupScript(Page.GetType(), "FrameScript", frameScript);

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