Creating and using XML Web Services

Currency Converter

• Create and store in a file of chosen format the rates (in USD) of at least three different currencies, from at least two weeks period (without weekends):
• the rates do not have to be true (for instance: use Excel to generate them)
• Create a XML Web Service at the address: http://localhost/task6/DLS/DLService.asmx
  • methods:
    • GetCurrenciesInfo
      • returns the information on stored data
        • currencies available
        • the start and end dates of the evaluated period
    • GetRates
      • returns the rates for a given date
      • currencies names
      • the rates in USD
      • make sure that the exceptional situations (e.g. the given date falls into weekend) are properly handled
      • the numbers and types of parameters as well as the type of the result are arbitrary
      • use the data stored locally
• Create an ASP.NET application which contains a page at the address: http://localhost/task6/DLT/DLTest.aspx
• the page contains:
  • two edit controls for giving start and end dates
  • two dropdown boxes for choosing the currencies
  • a plot (with a appropriate description) showing the changes in the rates between two chosen currencies within a given period of time
  • treat USD as one of available currencies; if you find this difficult to implement in the Application you can provide the constant 1.0 USD to USD rate from the Service
  • a button for refreshing the plots
• as the data source, use the functions from the created service
• CAUTION: if the addresses of the Web Site and Web Service are different than these provided above, only the "potential usability" of the code will be marked