Hi , I have a column type of GridClientSelectColumn , now how can access to checkbox in every row in this column , and how can checked,unchecked them with client side way (in javascript function)
You could use the set_selected() method in order to select/deselect the rows which in turn check/uncheck the corresponding checkboxes. See the example shon below.
JavaScript:
<script type="text/javascript">
function Select() {
var grid = $find('<%= RadGrid1.ClientID %>');
var MasterTable = grid.get_masterTableView();
// This will select all the rows
for (var i = 0; i < MasterTable.get_dataItems().length; i++) {
MasterTable.get_dataItems()[i].set_selected(true); // Give parameter false for deselecting the row