How to retain Textbox's State after Postback in asp.net

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I'm working on a form which is having a gridview & save button.Gridview has a checkbox & a textbox.If i clicked on checkbox and if it is checked,the textbox in that row becomes disable and if it is unchecked,the textbox in that row becomes enable.For this purpose i'm using following JQuery code & it is working properly.

JavaScript

$(document).ready(function () {
    try {
        $("input[type=checkbox][id*=chkChild]").click(function () {
            if (this.checked) {
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").attr("disabled", true);
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").val("NA");
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").focus();
            } else {

                $(this).closest("tr").find("input[type=text][id*=txtRemark]").attr("disabled", false);
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").val("");
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").focus();
            }
        });
    } catch (e) {
        alert(e);
    }
});

But after postback if i the textbox is disabled then it is not retaining its disable state & it becomes enable. So please tell me how to maintain its state.

Posted 26-Sep-14 22:27pm

Anand Dhamane

Updated 26-Sep-14 22:28pm

v2

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rajeevcse04 · Answer 1 · 2014-10-07T19:38:00

you can write a function to manipulate textbox accordingly checkbox inside grid and call that function in client side pageLoad function.

C#

function pageLoad()
{
EnableDisabletextBox();
}  
function EnableDisabletextBox()
{
try {
        $("input[type=checkbox][id*=chkChild]").each(function () {
            if (this.checked) {
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").attr("disabled", true);
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").val("NA");
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").focus();
            } else {

                $(this).closest("tr").find("input[type=text][id*=txtRemark]").attr("disabled", false);
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").val("");
                $(this).closest("tr").find("input[type=text][id*=txtRemark]").focus();
            }
        });
    } catch (e) {
        alert(e);
    } 
}