UpdatedGridHTML

 columnDefs: [
                  {
                      name: "CustomerID", displayName: "Customer ID", field: "CustomerID",
                      cellTemplate: '<div  ng-if="!row.entity.editrow">{{COL_FIELD}}</div><div ng-if="row.entity.editrow"><input type="text" style="height:30px" ng-model="MODEL_COL_FIELD"</div>', width: 80
                  },
                  {
                      name: "CompanyName", displayName: "Company Name", field: "CompanyName",
                      cellTemplate: '<div  ng-if="!row.entity.editrow">{{COL_FIELD}}</div><div ng-if="row.entity.editrow"><input type="text" style="height:30px" ng-model="MODEL_COL_FIELD"</div>', width: 200
                  },
                  {
                      name: "ContactName", displayName: "Contact Name", field: "ContactName",
                      cellTemplate: '<div  ng-if="!row.entity.editrow">{{COL_FIELD}}</div><div ng-if="row.entity.editrow"><input type="text" style="height:30px" ng-model="MODEL_COL_FIELD"</div>', width: 140
                  },
                  {
                      name: "ContactTitle", displayName: "Contact Title", field: "ContactTitle",
                      cellTemplate: '<div  ng-if="!row.entity.editrow">{{COL_FIELD}}</div><div ng-if="row.entity.editrow"><input type="text" style="height:30px" ng-model="MODEL_COL_FIELD"</div>', width: 140
                  },
                  {
                      name: 'Actions', field: 'edit', enableFiltering: false, enableSorting: false,
                      cellTemplate: '<div><button ng-show="!row.entity.editrow" class="btn primary" ng-click="grid.appScope.edit(row.entity)"><i class="fa fa-edit"></i></button>' +  //Edit Button
                                     '<button ng-show="row.entity.editrow" class="btn primary" ng-click="grid.appScope.saveRow(row.entity)"><i class="fa fa-floppy-o"></i></button>' +//Save Button
                                     '<button ng-show="row.entity.editrow" class="btn primary" ng-click="grid.appScope.cancelEdit(row.entity)"><i class="fa fa-times"></i></button>' + //Cancel Button
                                     '</div>', width: 100
                  }
            ],