<%

@ Page Language

=

"

C#

"

 AutoEventWireup

=

"

true

"

 

%>

<!

DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"

>

<

html 

xmlns

="http://www.w3.org/1999/xhtml"

>

<

head

>

  

  <title>Check all checkbox in GridView</title>

  

<

script 

type

="text/javascript"

>

  

  

function

 CheckAll(chk_all)

  {

       

var

 gridView

=

 document.getElementById(

"

<%=GridView1.ClientID %>

"

);

       

for

(i 

=

 

1

;i 

<

 gridView.rows.length; i

++

)

       {

            gridView.rows[i].cells[

0

].children

[

0

].checked 

=

 chk_all.checked;

       }

  }  

  

</

script

>

</

head

>

<

body

>

  

<

form 

id

="form1"

 runat

="server"

>

    

<div style="width:100%">

          

<

asp:GridView 

ID

="gv_users"

 runat

="server"

 

AutoGenerateColumns

="false"

>

            

<

HeaderStyle

/>

            

<

Columns

>

              

<

asp:TemplateField

>

                

<

HeaderTemplate

>

                  

<

input 

id

="chk_all"

 type

="checkbox"

 onclick

="CheckAll(this)"

 runat

="server"

 

/>

                

</

HeaderTemplate

>

                

<

ItemTemplate

>

                  

<

asp:CheckBox 

ID

="chk_item"

 runat

="server"

 

/>

                

</

ItemTemplate

>

              

</

asp:TemplateField

>

              

<

asp:BoundField 

DataField

="ID"

 HeaderText

="ID"

 

/>

              

<

asp:BoundField 

DataField

="Name"

 HeaderText

="Name"

 

/>

            

</

Columns

>

          

</

asp:GridView

>

    </div>

  

</

form

>

</

body

>

</

html

>