Enable SELECT ALL in a Table and GridX table

•  Go to Table Coach View 
•  Under the Event Handlers, Select the LOAD( )  option
•  With in the code we need to replace this

    gridOptions.plugins.indirectSelection = {headerSelector:true};     in place of 
     gridOptions.plugins.indirectSelection = true;


 GRIDX Table:

    For GRIDX table we need to add two modules. 

• Indirect Select
• Extended Select Row 

Go to GridX Coach View
Search for the Indirect Select Module ,you will find below code as commented.

   if (rowSelect != "None") {
                            /*
                                      modules.push(
                                        {
                                              "moduleClass": IndirectSelect,
                                             "all": true
                                        },
                                            RowHeader
                                      );
 
                                      if (rowSelect == "Multiple") {
                                            modules.push(
                                                 {
                                                          "moduleClass": ExtendedSelectRow
                                                    });
                                          } else {
                                modules.push(
                                {
                                  "moduleClass": SelectRow,
                                   "multiple": false
                                });
                          }
                  */
Uncomment the Indirect Extended Select Row and place the following Highlighted code instead of that.

modules.push(
                                        {
                                              "moduleClass": SelectRow,
                                              "multiple": rowSelect == "Multiple",
                                              "selectByIndex": true,
                                              "triggerOnCell": true
                                            },
                                                    RowHeader,
                                                     {
                                                              "moduleClass": IndirectSelect,
                                                              "all": true
                                                        }
                                              );
                                                    } // End of rowSelect != None