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OdbcCommand dataCommand = new OdbcCommand(); dataCommand.Connection = dataConnection; // Build command string StringBuilder commandText = new StringBuilder("INSERT INTO Products (ProductName, "); commandText.Append("CategoryID, UnitPrice, "); commandText.Append("UnitsInStock) VALUES ('"); commandText.Append(productName ); commandText.Append("', "); commandText.Append(categoryID); commandText.Append(", "); commandText.Append(price); commandText.Append(", "); commandText.Append(quantity ); commandText.Append(")"); dataCommand.CommandText = commandText.ToString(); int rows = dataCommand.ExecuteNonQuery(); // Make sure that the INSERT worked Assert.AreEqual(1, rows, "Unexpected row count, gasp!"); // Get the ID of the category we just inserted // This will be used to remove the category in the TearDown commandText = new StringBuilder("SELECT ProductID FROM"); commandText.Append(" Products WHERE ProductName = "); commandText.Append("'Bogus Product'"); dataCommand.CommandText = commandText.ToString(); OdbcDataReader dataReader = dataCommand.ExecuteReader(); // Make sure that we found our product if (dataReader.Read()) { productID = dataReader.GetInt32(0); }

of defining a navigation system for your application. You may want to use navigation bars during the prototype phase of your application, while you re toying with different ideas for screen layouts.

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Figure 5-23. If not used properly, DSREPAIR.NLM can prove deadly to your eDirectory database. The first option that can be used without harm is Report Synchronization Status. This option offers an overview of the current synchronization status of your database. (See Figure 5-24.) With it, you can check if all servers in the network are capable to communicate changes the proper way amongst each other. If there is something wrong, in many cases an error code will be displayed. If nothing is wrong, the report will show this as well. If you get an error message, you can try to find the meaning of it in the knowledgebase at support.novell.com. It s recommended you don t experiment with this option by yourself. Instead, see an expert on eDirectory and ask how he can help you resolve this problem.

Breadcrumbs are yet another tool you can use to allow users to navigate your application. However, unlike most of the other navigation tools, breadcrumbs have a quite unique characteristic: they allow users to easily see their current position in the application relative to other areas of the application. Users can go back to previous locations in the application by following the breadcrumb trail created by their actions. The Buglist application already contains a breadcrumb menu, displayed just below the tabs, as shown in Figure 6-27. In this figure, the breadcrumb trail says the user is currently on the Analysis page and got to that page via the home page. Actually, the last part of the preceding sentence may or may not be true, since breadcrumbs allow for a great deal of flexibility in terms of how you associate breadcrumb entries with each other. The way to read the breadcrumb trail in this case is that the user is able to go directly to the home page by clicking the Home link in the breadcrumb trail.

Figure 5-24. With DSREPAIR, you can generate a quick overview of all current errors in your eDirectory database. The second important option is Time Synchronization. This option let s you verify that the time is properly synchronized amongst the servers in your network. The important thing to look for with this option is whether in the Time is in sync column you see Yes behind each server. For proper eDirectory synchronization, it s important that all servers share a common time. (See Figure 5-25.) If for any reason the time on your server is not synchronized, you can try the command set timesync restart flag = on on the console of your server. This nondestructive command lets the server try to synchronize its time immediately.

Figure 5-25. For proper eDirectory synchronization, it s important that the time is synchronized on the network.

Figure 6-27. The breadcrumb trail shows the user is on the Analysis page. An application can have multiple breadcrumbs defined and can display multiple breadcrumbs simultaneously. However, we suggest that you use only one breadcrumb menu, perhaps two if necessary. Displaying more than two menus is rarely helpful and can actually make the task of navigating more confusing.

dataConnection.Close(); } catch(Exception e) { Assert.Fail("Error: " + e.Message); } } [TearDown] public void Destroy() { try { OdbcConnection dataConnection = new OdbcConnection(); dataConnection.ConnectionString = connectionString.ToString(); dataConnection.Open(); OdbcCommand dataCommand = new OdbcCommand(); dataCommand.Connection = dataConnection; // Build command string StringBuilder commandText = new StringBuilder("DELETE FROM Products WHERE ProductID = "); commandText.Append(productID); dataCommand.CommandText = commandText.ToString(); int rows = dataCommand.ExecuteNonQuery(); // Make sure that the DELETE worked Assert.AreEqual(1, rows, "Unexpected row count, gasp!"); dataConnection.Close(); } catch(Exception e) { Assert.Fail("Error: " + e.Message); } }

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