My exception throwing / handling aproach (http://www.reddit.com/r/readablecode/comments/1mflfw/how_to_work_with_exceptions/)

gistfile1.cs

class FormFoo : Form {
 // ...
 
 // This is an UI control event handler, so any errors 
 // that happen are going to be reported to the user (via the MessageBox.Show)
 private void Bt1_Click(object sender, EventArgs e) {
  try {
    DoStuff();
    DoStuff2();    
  }catch(Exception ex){
    MessageBox.Show(....);
  }
 }
 
 // These are not UI event handlers, so they should throw exceptions
 // if they are unable to do their task properly, and the callee should be
 // in charge of recovering/propagating failure
 
 private void DoStuff() {
   try {
     // ...
     DoStuff3();
     // ...
   }catch(Exception ex) {
     throw new Exception("Error on DoStuff()", ex);     
   }
 }
 
 private void DoStuff2() {
   try {
     // ...     
   }catch(Exception ex) {
     throw new Exception("Error on DoStuff2()", ex);     
   }
 }
 
 private void DoStuff3() {
   try {
     // ...
     if(something_is_not_right){
      throw new Exception("Something is not right");
     }
     // ...     
   }catch(Exception ex) {
     throw new Exception("Error on DoStuff3()", ex);     
   }
 }
 
 
}