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checkall for checkboxes in gridview

Posted on 2008-06-11
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Last Modified: 2008-07-05
In my  gridview  I have a checkbox  column , so, I have a check box as a header for that column.
The interaction part I want to use javascript. Does anyone have a good sample code for me ?
Thank you,


     
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Question by:sunisagar
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3 Comments
 
LVL 5

Expert Comment

by:Qaiser_Mehmood_Mughal
ID: 21766638
For complete details check this link. hope this will help u

http://www.shiningstar.net/articles/articles/javascript/checkboxes.asp


<SCRIPT LANGUAGE="JavaScript">
<!--       
// by Nannette Thacker
// http://www.shiningstar.net
// This script checks and unchecks boxes on a form
// Checks and unchecks unlimited number in the group...
// Pass the Checkbox group name...
// call buttons as so:
// <input type=button name="CheckAll"   value="Check All"
      //onClick="checkAll(document.myform.list)">
// <input type=button name="UnCheckAll" value="Uncheck All"
      //onClick="uncheckAll(document.myform.list)">
// -->

<!-- Begin
function checkAll(field)
{
for (i = 0; i < field.length; i++)
      field[i].checked = true ;
}

function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
      field[i].checked = false ;
}
//  End -->
</script>
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LVL 5

Expert Comment

by:Qaiser_Mehmood_Mughal
ID: 21766647
This link is also very nice, and its for gridview control checkboxs.

http://weblog.vb-tech.com/nick/archive/2005/09/26/1300.aspx

function doAllChecks()
{
 re = new RegExp('_chkMove')


 if(document.Form1['Datagrid1_ctl1_chkAction'].checked == true)
 {
   for (var iCount=0;iCount
  {
   elm = document.forms[0].elements[iCount]

    if (elm.type == 'checkbox') {

     if (re.test(elm.id)) {
      elm.checked = true;
     }
    }
   
  }
 }
 else
 {
 
 
  for (var iCount=0;iCount
  {
   elm = document.forms[0].elements[iCount]

    if (elm.type == 'checkbox') {

     if (re.test(elm.id)) {
      elm.checked = false;
     }
    }
   
  }
 }
}
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Accepted Solution

by:
sunisagar earned 0 total points
ID: 21782338
Do you have a working  sample of this ?.
What if one of the checkboxes get uncheck in the gridview tahn we have to uncheck the checkbox in the header, How to do that?.

And in the code  " if(document.Form1['Datagrid1_ctl1_chkAction'].checked == true)
"
is Datagrid1_ctl_chkAction" the id of the header checkbox ?
and about the regular expression  re = new RegExp('_chkMove')
waht happens here ?. what is  "_chkMove"  the id of the checkbox in the columns ?

Please attach a sample working code if you haveone for the GridView
Thank you
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