title: Error with not existing in current context and expected class
body: <p>so i'm relatively new to programming, it's my 1st class in the semester and now we are working with methods
  have an assignment to write methods and here's my code
  been messing with it for a while trying to get it executable to no avail
  Here's my code</p>
  
  <pre><code>const double INTERNET_SPEED = 195.49;
  const double PHOTO = 129.95;
  const double KEYBOARD = 79.95;
  const double MICROSOFT = 139.99;
  
  private void calculateButton_Click(object sender, EventArgs e)
  {
      try
      {
          double charge = 0;
          double discountcharge = 0;
          double total;
  
          charge = GetPackageCharge(charge);
          discountcharge = GetDiscountCharge(discountcharge);
          total = DisplayCharges(charge, discountcharge);
          value returning method to determine price for selected packages
  
          if (nameTextBox.Text != "") // name input validation
          { 
  
          }
          else
          {
              MessageBox.Show("Please Enter Customer Name.", "Name Required");
          }
          catch
          {
              MessageBox.Show("An error has occurred!", "Error!");
          }
      }
  
      private double GetPackageCharge(double charge);
      double charge = 0;
      {
          //value returning method to determine price for selected packages
          if (internetCheckBox.Checked)
          {
              charge  = INTERNET_SPEED;
          }
          else if (photoCheckBox.Checked)
          {
              charge = PHOTO
          }
          else if (keyboardCheckBox.Checked)
          {
              charge = KEYBOARD;
          }
          else if microsoft.CheckBox.Checked)
          {
              charge = MICROSOFT;
          }
      }
  
      private void DisplayCharges(double charge, double discountcharge);
      {
          total = charge + discountcharge;
          packageLabel.Text = charge.ToString("C");
          discountLabel.Text = discountcharge.ToString("C");
          totalLabel.Text = total.ToString("C");
      }
  }
  
  private void exitButton_Click(object sender, EventArgs e)
  {
      //closes program
      this.Close();
  }
  </code></pre>