CheckBox List losing the checkbox checked after post back

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Hi,

I have check box list and a check box, After binding the data to the checkbox, if we select the all checkboxes then the main checkbox gets selected its fine till now but when we unselect any check box in checkbox list and clicks a button then all checkboxes in the checkboxlist getting unchecked.

How to Hold the checked items of the checkbox list even after the post back.

Javascript code

C#

function pageLoad(sender, args) {
               
               CheckAllProject();
           }

C#

function CheckAllProject () {

               $("[id*=lbxProjectList]").focus(function () {
                    if ($("[id*=lbxProjectList] input:checked").length == $("[id*=lbxProjectList] input").length) {
                        $("[id*=CheckBox1]").attr("checked", "checked");
                    } else {
                        $("[id*=CheckBox1]").removeAttr("checked");
                    }
            });
           }

It Looks like in the following way

Project List:CheckBox Select All Projects
Checkbox 1 Project1
Checkbox 2 Project2

Button Submit

Posted 6-Nov-14 0:25am

santoshkumar413

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Comments

Laiju k 6-Nov-14 6:37am

there is only one button

santoshkumar413 6-Nov-14 7:03am

Yeah there is only one button.

Laiju k 6-Nov-14 7:32am

If it is a submit button,then why you need previous values.

1 solution

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Pravuprasad · Answer 1 · 2014-11-06T00:45:00

Solution 1

Here you are calling CheckAllProject() in PageLoad() ,so every time page gets loaded it resets all checkboxes. So instead of calling CheckAllProject() inside PageLoad(),call it in Onclick() of button.

Posted 6-Nov-14 0:45am

Pravuprasad

Comments

santoshkumar413 6-Nov-14 7:05am

@Pravuprasad, Hi, Thanks for the reply, but the check all checkbox gets check only on the checking of all checkboxes, not by the button click. Please suggest me any other solution.

Pravuprasad 6-Nov-14 7:24am

use jquery for this in jquery use prop().
i.e
function CheckAllProject () {
$(".class of your checkbox").prop('checked', true);
})
and call it on button click event of Button.