jqGrid - How to unselect the header row checkbox

Here is the scenario:

1. Select all rows by checking the header row checkbox. 2. Unselect one row. 3. The header row checkbox 开发者_StackOverflow中文版is still checked which is invalid because not all rows are selected.

How can I unselect the hedaer row checkbox? Thanks

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You can use resetSelection method. Look at the example prepared for this and this question. The button "Clear Selection" use resetSelection method.

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You can do the following:

var grid = $("#ID_OF_YOUR_GRID");

grid.jqGrid({
        //other options
        multiselect: true,
        onSelectRow: function (rowid, status) {     
           var chkSelectAll = $("#ID_OF_THE_HEADER_CHECKBOX_USUALLY_CB_DATA");

           if (chkSelectAll.length && chkSelectAll.is(':checked') && !status) {          
              chkSelectAll.removeAttr('checked');
           }
         }
     });

BTW. You only need this on the older versions of JQGrid. I've checked in version 4.3.1 this works out of the box.