Problem with Check boxes

[VikasPradhan]

Hi all,
i am doing application in c#..
can anyone tell how can i uncheck all check boxes of List View

Thank You

[KnightHack]

function checkall()
{
var parentChk = document.form1["Rpt_Potlist:_ctl0:Chk_All"];
if(parentChk.checked)
{
var i = 1
while(true)
{
var Sel = document.form1["Rpt_Potlist:_ctl" + i + ":Chk_Item"];
if (Sel == null) break;
Sel.checked = true;
i++;
}
}
else
{
Uncheckall()
}
}
function Uncheckall()
{
var i = 1
while(true)
{
var Sel = document.form1["Rpt_Potlist:_ctl" + i + ":Chk_Item"];
if (Sel==null) break;
Sel.checked = false;
i++;
}
}
function ParentCheck()
{
var i=1
var parentChk = document.form1["Rpt_Potlist:_ctl0:Chk_All"];
while(true)
{
var Sel = document.form1["Rpt_Potlist:_ctl" + i + ":Chk_Item"];
if (Sel==null) break;
if (!Sel.checked)
{
parentChk.checked = false ;
break;
}
else
{
parentChk.checked = true ;
}
i++;
}
}