//***********START OF MY CODE************

       
		  static double salesTaxRate = 0;       //class level variable


		private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) 
				 
			{
                //---fill the combo box
                cboStates->Items->Add("CA");
                cboStates->Items->Add("AZ");
                cboStates->Items->Add("NV");
                cboStates->Items->Add("OR");
                cboStates->Items->Add("WA");

                cboStates->SelectedIndex =0;        // make sure the first one is selected
		    }




	    private: System::Void btnOK_Click(System::Object^  sender, System::EventArgs^  e) 
			 {
			        //---now decide the sales tax rate based upon the state they chose
					
                    MessageBox::Show("The sales tax for " + cboStates->SelectedItem->ToString() + " is " +  salesTaxRate + ".", "Using Switch" ,
						MessageBoxButtons::OK, MessageBoxIcon::Information);
			 
			 }

        private: System::Void cboStates_SelectedIndexChanged(System::Object^  sender, System::EventArgs^  e) 
		 
		 {
		 
		          /*  ---now decide the sales tax rate based upon the state they chose. C++ will not let you evaluate a string using switch like you can in VB & C#.
                    That is why it is easier to use a combo box and switch on the index number.
                  */
                    
                    switch (cboStates->SelectedIndex)
                    {
                        case 0:                             //CA
                            salesTaxRate = .08;
                            break;
                
                        case 1:                             //AZ
                            salesTaxRate = .05;
                            break;
                        case 2:                             //NV
                            salesTaxRate = .01;
                            break;

                        case 3:                             //OR and WA are the same. If they choose OR, the switch "falls through" to case 4. Both OR and WA will have the same sales tax
						case 4:                             //WA
                            salesTaxRate = .06;
                            break;

                        
                  
                    }
		 
		 }