Question

        $("#addressList").jqGrid({
        url: '/Storage/Shipping/GetCustomerAddresses?q=2&Customerid=' + $("#saveCustomerID").val(),
        datatype: "Json",
        jsonReader: {
            root: "Data.rows",
            page: "Data.page",
            total: "Data.total",
            records: "Data.records",
            repeatitems: true,
            userdata: "userdata",
            cell: "cell"
        },
        colNames: ['', 'Line 1', 'Line 2', 'City', 'State'],
        colModel: [
                         { name: 'myradio', width: 30, fixed: true, align: 'center', resizable: false, sortable: false,
                             formatter: function (cellValue, option) {
                                 return '<input type="radio" name="radio_' + option.gid + '" />';
                             } 
                         },
                         { name: 'Line1', index: 'Line1', width: 250 },
                         { name: 'Line2', index: 'Line2', width: 250 },
                         { name: 'City', index: 'City', width: 210 },
                         { name: 'State', index: 'State', width: 75 }
                    ],
        page: 1,
        rowNum: 50,
        rowList: [20, 50, 100],
        pager: '#pager',
        viewrecords: true,
        grouping: false,
        caption: "Addresses",
        mtype: "POST",
        width: "100%",
        height: "100%",
        loadonce: true,
        sortable: false,
        beforeSelectRow: function (rowid, e) {
            var radio = $(e.target).closest('tr').find('input[type="radio"]');
            radio.attr('checked', 'checked');
            $("#saveCustomerAddressID").val(rowid.toString());
            return true; // allow row selection
        },
        loadComplete: function () {
            var grid_ids = $("#addressList").jqGrid('getDataIDs');
            for (var i = 0; i < grid_ids.length; i++) {
                if ($("#saveCustomerAddressID").val() == grid_ids[i]) {
                    {
                        $("#addressList").jqGrid('setSelection', grid_ids[i], true);

                    }
                }
            }
        }
        //, postdata: { CustomerID: $("#saveCustomerID").val() }
    }); 

The above code sets the selection correctly in loadcomplete. The $(“#saveCustomerAddressID”).val() is the rowid fro the JSON Data.
The radiobutton is set in the beforeSelectRow. I know the row number and grid column of of the radiobutton to be set, but how do you set the radiobutton?

Answer 1

if you have row number and grid column, then it shouldn’t be difficult. get the id(css) of that column where you have your radio button(check developer tools for this). now lets say that radio button is in a column name “Demo”

so the id would look like something like this i suppose

var demo= $("'#'+rowid+'Demo'")//check developer tools for confirmation

demo.attr('checked', 'checked');
$("#saveCustomerAddressID").val(rowid.toString());//continue with you loadComplete code

and for set selection use setSelection method of jqgrid after this continue with your code of loadcomplete