Checkbox and Javascript

[tabbykitty]

Hi there

I have created a record update form. All of the controls are databound.
One of the controls on the form is a checkbox and determines whether
the record is 'Active' or not. What i want to happen is that when the
checkbox is checked (or unchecked), that another field on my form
(Start Date)which is also databound gets changed to todays date (with
the date taken from the clients side), i would also like to have
another field change to todays date + 365 days (End Date). I dont want
to use postback. I presume that i will need some client side scripting.

Does anyone have any idea how i can do this?

I am a total newbie using vb but not yet using code behind

Any help greatly appreciated

 

[Santhi Maadhaven]

Hi,
Add onClick event of client side script in codebehind for checkbox
control like
chkBox.Attributes.Add("onClick","javascript:Test()"); This code will add
client side script event to server control.

In aspx page,add below script inside head
<script language="javascript">
function Test()
{
//This will set the value to textbox server control
document.forms[0]['txtBox1'].value = date;
}
</script>

 

[tabbykitty]

Thank you very much for your reply
Next step for me is finding a bit of javascript that will be able to do
that.

I will give that a go and let you know how i get on.

tabbykitty

 

[tabbykitty]

Whoops

Didnt see the your bit of javascipt in there, i will definitely try that
out

Thank you

tabbykitty

 

[tabbykitty]

Hi Santhi

I have given it a try but i think that i must be doing something wrong
as nothing is happening when i click the checkbox (please bear in mind
that i am totally new to any sort of coding so there is a high
possibility that i have messed up somewhere)

Here is what i put in the head of the page with the form in it (i am not
utilising code behind as i am using dreamweaver at the moment but i will
do all that at a later stage)

<script language="javascript">
function Test()
{
//This will set the value to textbox server control
document.forms[form1]['StartDate'].value = date;
}
</script>

<script language="VB" runat="server">
public sub page_load(Src As Object, E As EventArgs)
Active.Attributes.Add("onClick","javascript:Test()")

End Sub
</script>

Do i need to add any code to my actual checkbox within the page?

Thank you very much


tabbykitty

 

[Santhi Maadhaven]

Hi,
Add this line of code var date = new Date(); inside the javascript
before document.forms[form1]['StartDate'].value = date;

 

[tabbykitty]

Hi Santhi

You are a star, it worked!

One problem though. When i now try to submit the form, i get this error

System.FormatException: String was not recognized as a valid DateTime.
at System.DateTimeParse.Lex(Int32 dps, __DTString str, DateTimeToken
dtok, DateTimeRawInfo raw, DateTimeResult result, DateTimeFormatInfo&
dtfi)
at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi,
DateTimeStyles styles)
at System.DateTime.Parse(String s, IFormatProvider provider,
DateTimeStyles styles)
at System.DateTime.Parse(String s, IFormatProvider provider)
at System.DateTime.Parse(String s)
at DreamweaverCtrls.DataSet.ConvertParameterValue(String strValue, Enum
theType)
at DreamweaverCtrls.DataSet.AddParameters(IDbCommand myCommand)
at DreamweaverCtrls.DataSet.DoInit()


I have the dates in those boxes formated this way '04 October 2006'

I have tried taking the formatting off the control but that doesnt make
any difference

Dont suppose that you have any idea how i can get around this do you?

Thank you so much for your help so far, i am very happy that it is at
least doing as much as it is.
If you can help me solve this completely i will be over the moon!



tabbykitty

 

[Santhi Maadhaven]

Hi,

Date FormatException will occur when u the date is not valid. Can u just
post me what u have done in code for parsing the date?

 

[tabbykitty]

Hi

Here is what i have done whith the textbox in the page

<asp:TextBox Columns="20" ID="StartDate" runat="server"
TextMode="SingleLine" text='<%#
DateTime.Parse(dsadvertiser.FieldValue("StartDate",
Container)).ToString("D") %>' />

Is this all you need?

Thank you

tabbykitty

 

[Santhi Maadhaven]

Hi ,
Check this line of code
'dsadvertiser.FieldValue("StartDate",Container))' whether it has the proper
date value ..I feel this is the problem..

 

[tabbykitty]

Hi Santhi

Dont know much about Javascript (understatement of the year) but is it
possible that i need to use a bit of javascipt that will put the date
into the textbox in the correct format. At the moment i get this date
put in the textbox 'Sat Dec 03 2005 20:24:04 GMT+0200 (South Africa
Standard Time)'

I have tried testing out my textbox (as you suggested) and it seems that
all is well and the form submits fine if i get rid of the end bit
(GMT+0200 (South Africa Standard Time)), my form doesnt like that bit at
all.

If it is possible, have you any idea what the javascript should be? I
have tried various bits that i found on the net and tried to modify them
so that they would work with my form but with no luck.

So close yet so far away, any more help with this will be greatly
appreciated, thank you in advance

tabbykitty

 

[Santhi Maadhaven]

Hi,
Got ur problem. Use the code below in javascript to format the date in
dd/mm/yyyy format.This will solve ur problem
var date = new Date();
var d = date.getDate();
var day = (d < 10) ? '0' + d : d;
var m = date.getMonth() + 1;
var month = (m < 10) ? '0' + m : m;
var yy = date.getYear();
var year = (yy < 1000) ? yy + 1900 : yy;
date = day + "/" + month + "/" + year;

Rgds,
Santhi.M

 

[tabbykitty]

Hi Santhi

Worked like a charm!!

Thank you so much for all your help and time. Really appreciated

Thank you again.

tabbykitty