how can i select all checkboxes by clicking a button or checking another checkbox

how can i select all checkboxes by clicking a button or checking another checkbox

• MikeCade

  finally, there is way to do this.
  
  

• jarrods

  it's not working man...when set .selected = true, instead of checking all checkboxes, it will select all rows but not the checkboxes.
  
  2nd prob: how to uncheck those checkboxes that have been ticked after a button click event. Similar to uncheck all checkboxes.
  
  

• Milind Vengurlekar

  use a foreach loop to iterate thru the dgv rows. then set .Selected = true;
  
  
• how can i select all checkboxes by clicking a button or checking another checkbox