problem with check box in asp .net c#?

Question

The controls on aspx page are like this Submitted Submission Date

I want, if the check box is checked, then the textbox will be enabled I wrote

  if(chkSubmitted.Checked)
        {
            txtSubmissionDate.Enabled = true;
        }

in the page load event. But when the page is loaded this checkbox having no effect on. Whats going wrong?

Can you post your page_load code? Remember you need to check for postback? — immutabl
– immutabl, Commented Jul 18, 2011 at 15:31

gilly3 · Accepted Answer · 2011-07-18 15:44:23Z

1

If you want the action of clicking the checkbox to enable the textbox, you'll need to do a postback when the box is checked by setting AutoPostBack="True":

<asp:CheckBox runat="server" ID="chkSubmitted" AutoPostBack="True" />

Or, you could use JavaScript:

<asp:CheckBox runat="server" ID="chkSubmitted" onclick="setSubmissionDateEnabled()" />

function setSubmissionDateEnabled()
{
    var chkSubmitted = document.getElementById("<%= chkSubmitted.ClientID %>");
    var txtSubmissionDate = document.getElementById("<%= txtSubmissionDate.ClientID %>");
    txtSubmissionDate.disabled = !chkSubmitted.checked;
}

edited Jul 18, 2011 at 15:44

answered Jul 18, 2011 at 15:33

gilly3

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2 Comments

Pankouri Over a year ago

Thnx you for the answer, but now I am having a new prob, I have placed the controls inside an update panel. But, there are other Update panel also, when this(txtbox enabled) is being updated, other ajax control is also updated which I don want, can you tell me how to solve this, or I shuold place this as new problem.

gilly3 Over a year ago

Yes, please post this as a new question.

SMK · Accepted Answer · 2011-07-18 15:35:07Z

1

First set autopostback property to true of checkbox

write following code in checkbox_Selectedindexchanged event

if(chkSubmitted.Checked)
{             
txtSubmissionDate.Enabled = true;  
} 
else
{
txtSubmissionDate.Enabled = false;
}

answered Jul 18, 2011 at 15:35

SMK

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Comments

TJHeuvel · Accepted Answer · 2011-07-18 15:31:27Z

0

Thats most likely because the default state of txtSubmissionDate is enabled already.

Try this in your page_load:

txtSubmissionDate.enabled = !chkSubmitted.Checked

To clarify, the textbox should not (!) be enabled when the Checkbox is.

answered Jul 18, 2011 at 15:31

TJHeuvel

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Comments

saj · Accepted Answer · 2011-07-18 15:32:36Z

0

Put this in Page_PreRender event. At this stage it will capture the user affected state of chkSubmitted.

answered Jul 18, 2011 at 15:32

saj

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