Question

I have one Datagrid in Flex. In datagrid there are 4 columns like mark1,mark2,mark3,Total.
When i enter mark1,mark2,mark3 that time i want to update total.

Answer 1

Assuming I understand what you’re asking correctly, this should be easy enough to do.

If you are using a custom object for each row in your DataGrid, you can create a property that just adds the other fields together and returns the total.

Example Class:

package
{
  [Bindable]
  public class MyCustomClass
  {
    private mark1:int = 0;
    private mark2:int = 0;
    private mark3:int = 0;

    public function get Mark1():int { return mark1; }
    public function set Mark1(value:int):void { mark1 = value; }

    public function get Mark2():int { return mark2; }
    public function set Mark2(value:int):void { mark2 = value; }

    public function get Mark3():int { return mark3; }
    public function set Mark3(value:int):void { mark3 = value; }

    public function get Total():int { return mark1 + mark2 + mark3; }
  }
}