look at this problem urgent.

[.NetIndia]

Hi Group
     I am binding a checkboxlist in codebehind. I want to get the
value of each checkbox from javascript. How can I do this?
I tried with the following code

document.getElementById('CheckBoxList1_0').value;

but it is giving the result as on. how to accomplish this one???
--
Sreetharan S.T


--
Regards,
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[Thread]

this code might help u

function CheckAllDataGridCheckBoxes(aspCheckBoxID, checkVal)
{
re = new RegExp(':' + aspCheckBoxID + '$') //generated controlname
starts with a colon

for(i = 0; i < document.forms[0].elements.length; i++)
{
elm = document.forms[0].elements[i]

if (elm.type == 'checkbox')
{
if (re.test(elm.name))
{
elm.checked = checkVal
}
}
}
}

[BabuLives]

hai check this,...

http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/browse_thread/thread/48d189d2e6d1a1aa/b3f8490b81783a37?lnk=st&q=get+checkboxlist+value+in+javascript&rnum=12&hl=en#b3f8490b81783a37

Regards,
Satheesh

[Raja Prakash]

hey.

 

        if you say the purpose then i could say you exact soltuion....

 

byeee...

raj...

 

[BabuLives]

See this thread...

http://groups.google.com/group/microsoft.public.dotnet.framework.aspnet/browse_thread/thread/0355942715cbc7da/aac0befcb48fc2c3?hl=en#aac0befcb48fc2c3

[veera mani]

hai raj

iam haveing more 5 items in checkbox list,if zero th item and first item of the
checkboxlist is selected then i should throw an error.this should be
doen in client
side.

--veera.

[Thread]

So you are telling that the user can select only one checkbox.

[Raja Prakash]

hey...

 

       great.. wat you have to do is when you are generating the checkbox list you bind it to a javascript function.... in this you pass the object of the checkbox chkList.attributes.add("onclick","return funCheck(this)").  After that you can validate that.  You can use a hidden textbox where you can count how many checkbox is been checked or wat are the check box is checked. on each onclick event of the checkbox you have to check that hidden control if it satisfies your condition throw the error.

 

I hope you got it....

 

          See its like this.... generate as many checkbox you can and you bind all those checkbox to a javascript function by passing them as "this" for onclick event.  chkList.attributes.add("onclick","return funCheck(this)").  in that function check what all the checkbox you have clicked if that satisfies you condition then throw the error and return false else return true.

 

Thats it...

 

byeee

raj...

 

 

[ST Sreetharan]

Hi Rajaprakash

         fine ya, i hope this is a nice solution and this will solve my problem.

 

Thanx a lot

Thank you Group

 

Sreetharan

[ST Sreetharan]

I wrote this code in C#

 

private void Page_Load(object sender, System.EventArgs e)
{
DataSet ds=new DataSet();
ds.ReadXml(Server.MapPath("XMLFile1.xml"));
TableRow tr=null;TableCell tc=null;
CheckBox c=null;int i=0;
foreach(DataRow dr in ds.Tables[0].Rows)
{
c=new CheckBox();tr=new TableRow();tc=new TableCell();
c.Text=dr[1].ToString();
c.ID="Chk"+ (++i).ToString();
c.Attributes.Add("onclick","watchChkList('"+c.ID +"','"+dr[0].ToString()+"');");
tc.Controls.Add(c);
tr.Cells.Add(tc);
Table2.Rows.Add(tr);
}
}
 

and in javascript

<script language="javascript">
  function watchChkList(key,value)
  {
   var existing;
   existing=document.getElementById('hdData').value;
   if(document.getElementById(key).checked==true)
   {
    if(existing !="") existing+=",";
    existing+=value;
   }else existing=existing.replace(value,'');     
   document.getElementById('hdData').value=existing;
  }
  function finalCheck(s,e)
  {
   var existing;
   existing=document.getElementById('hdData').value;
   if(existing.indexOf('J010')>=0 && existing.indexOf('J011')>=0)
    e.IsValid=false;
  }
</script>

Here hdData is a hiddenControl which collects all the values of the checkboxes.

This finalCheck is assigned to a custom validator and it works fine.

Thanks group, for your suggessions

Sreetharan S.T