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THE BASICS OF STORING TEST DATA
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else { Console.WriteLine("No deletion performed"); } } else if (iEntry == 4) { string strKey; string strSetting; string strAns; Console.WriteLine("Enter the key"); strKey = Console.ReadLine(); TestProject = Registry.CurrentUser.OpenSubKey(strKey, true); Console.WriteLine("Enter the setting"); strSetting = Console.ReadLine(); Console.WriteLine("Do you really mean to delete: " + strKey + "\\" + strSetting + " "); strAns = Console.ReadLine(); strAns = strAns.ToUpper(); if (strAns == "Y" | strAns == "YES") { TestProject.DeleteValue(strSetting); Console.WriteLine("Key setting " + strKey + "\\" + strSetting + " deleted"); } else { Console.WriteLine("No deletion performed; key closed"); TestProject.Close(); } } else if (iEntry == 5) { string strKey; string strSetting; Console.WriteLine("Enter the key"); strKey = Console.ReadLine(); TestProject = Registry.CurrentUser.OpenSubKey(strKey); Console.WriteLine("Enter the setting"); strSetting = Console.ReadLine(); Console.WriteLine("Value of " + strKey + "\\" + strSetting + " is: " ); Console.WriteLine( Convert.ToString(TestProject.GetValue(strSetting))); }
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CHAPTER 3 THE BASICS OF STORING TEST DATA
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else if (iEntry == 6) { string strKey; string strHive; Console.WriteLine( "Select the hive you want to start with: "); Console.WriteLine( "Enter 'L' for HKEY_LOCAL_MACHINE or 'C' for HKEY_CURRENT_USER"); strHive = Console.ReadLine(); Console.WriteLine("Enter the key"); strKey = Console.ReadLine(); if (strHive == "L" | strHive == "l") { TestProject = Registry.LocalMachine.OpenSubKey(strKey); Console.WriteLine("HKEY_LOCAL_MACHINE selected"); } else { TestProject = Registry.CurrentUser.OpenSubKey(strKey); Console.WriteLine("HKEY_CURRENT_USER selected"); } foreach (string subKeyName in TestProject.GetSubKeyNames()) { Console.WriteLine(subKeyName); } TestProject.Close(); } else if (iEntry == 9) { Console.WriteLine("Good bye!"); } else { Console.WriteLine( "Invalid Entry; please enter 1-5 (or 9 to quit)"); } } } } } In the exercise, you saw how to read and write to the Windows Registry. This Registry utility can be improved not only with error handling, but also with additional routines provided for working with the Registry, such as retrieving settings underneath a key. The basic structure is all there, though, so you can add to and customize this utility to be useful for your own purposes.
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THE BASICS OF STORING TEST DATA
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Working with Database Files on a Test Project
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Now you ve seen two different ways to store test information: writing to text files and the Registry. Let s take stock so far. As we mentioned earlier, the Registry is not really a good place to store test results, but it s good for storing test options and other settings. A text file can store test results and anything else you want, so it s a good option to use for many things. There may be times when you ll want more structure in your test results files. By default, there isn t any structure to a text file, like a specific number of fields, unless you write a lot of code to impose this structure yourself. If you need structure, you may want to consider using a database for your test results. Databases can be an excellent way of storing test result information in a structured format. They also provide a way to store data that is flexible. Databases are a more sophisticated way to store data than simply using text files. The trade-off is that the opening, closing, reading, and writing are a bit more complex than working with text files. The payoff is big though! You will get the power of a professional Database Management System (DBMS) to organize and store your test data. This can be very beneficial for use in a long-term or large test project, not only because it s easier to manage, but also because it s easier to create and store reports using a database. For small projects, the trade-off may not be worth it because DBMSs can be expensive and they take up a lot of room. However, if you can use an inexpensive database program, like Microsoft Access, or the application you re testing is already using a database, then this can make it a viable option for any size test project. There are a lot of other reasons that may lead you to work with databases on a test project. For one, DBMSs are the way most data is stored in any significant application. DBMSs include Microsoft s SQL Server, IBM s DB2, Oracle s Oracle database, Sybase s SQL Server, and a host of others. If you work on a project that uses a DBMS, and it s pretty hard these days to find one that doesn t, then you may end up needing to test the application s interface to this database. So learning the principals of how an application opens and connects to a database can be very important. Important enough that we go into much greater detail on this subject in 8. Still, in this section, we ll streamline our work with databases to focus solely on opening, writing test results into, and then closing a database file. To keep things simple, we ll use Microsoft Access, but the code we use will apply to most any database.
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