Drag and Drop gridView Snippets

<scripttype="text/javascript">

 function Read_Data() {

var str = '';

var Grid_Table = document.getElementById('<%= Page.Master.FindControl("ContentPlaceHolder1").FindControl("gvDest").ClientID %>');

for (var row = 1; row < Grid_Table.rows.length; row++) {

if (document.all)

                    str = str + Grid_Table.rows[row].cells[0].innerText;

else

                    str = str + Grid_Table.rows[row].cells[0].textContent;

str = str +',';

            }

            document.getElementById(

'<%= Page.Master.FindControl("ContentPlaceHolder1").FindControl("HIDDENFIELD_CONTROL_ID").ClientID %>').value = str;

returntrue;

        }    

</script>

*note:for button control:

OnClientClick =" return Read_Data();

*note:javascript sample above, I created is only for read first column ( cell[0] ) in gvDest, If need to read all column, just loop Grid_Table.column.length

*Note:asp.net using masterpage