create a variable
bool OkClicked=false;
bool CancelClicked=false
in OKbuttonclick event
OKbuttonclick(System.Object sender, System.EventArgs e)
{
OkClicked=true;
//your code;
}
in cancelbuttonclick event
Cancelbuttonclick(System.Object sender, System.EventArgs e)
{
CancelClicked=true;
//your code;
}
in form closing event
Form1_FormClosing(System.Object sender, System.Windows.Forms.FormClosingEventArgs e) {
if(OkClicked)
{
//write code needed if ok button clicked
}
if(CancelClicked)
{
//write code needed ifcancel button clicked
}
}