private: System::Void btnAdd_Click(System::Object^  sender, System::EventArgs^  e) 
			
			{
				  //---create three variables for our data
				double firstNumber  = 0;
				double secondNumber  = 0;
				double totalDue  = 0;
            

			/*			assign the values to variables using TryParse. If TryParse can convert the value in the textbox to a
						double, then it assigns that value to the variable automatically so I do not have to! This will block alpha
						characters or invalid data.  Notice I use && so if the first expression is false it doesn't waste time checking the
						second expression.*/


				if(Double::TryParse(txt1->Text, firstNumber) && Double::TryParse(txt2->Text, secondNumber))
					{
						totalDue = firstNumber + secondNumber;      //'add them
				
						Label1->Text = DoFormat(totalDue);               //let DoFormat function format as currency
						
					}
				else
					{
					
						MessageBox::Show("Please enter correct data.");
						ClearForm();
					
					}	
			}

		private: System::String^ DoFormat(double x)
			{
				
				String^ myResult = x.ToString("c");

				return myResult;


			}