Hi @satishJ ,

just you need to call a property with a chekc box control in the label and use even action on click  refresh the section by calling data transform . In the data transform set the all the records to chekc box with the value called in the label .

for deselect any of the row 

do the same by assigning label property to null .

@satishJ  The below post has one of the approach which you can use rather than running Data Transform everytime to select and select the checkboxes:

https://collaborate.pega.com/discussion/how-add-select-all-functionality-optimized-table