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On the command line, you specify the server, database, and user account you want to use and force SQLCMD to ask you for the password you want to use. This prevents anyone from looking over your shoulder and seeing the passwords you re using. This isn t a massive security risk, but you should be doing all you can to ensure that your database password remains secret. Once you ve connected to the database, you execute a simple SELECT query against the Manufacturer table and return all the entries in the table, as shown previously in Figure 11-2. Using SQLCMD, you can enter several queries separated by semicolons, or you can spread one query across several different lines (which is quite valuable if you have complex queries). Only when SQLCMD sees a GO command does it execute the query or queries you ve entered. You close the connection to the database and SQLCMD by using either the QUIT or EXIT command. You can use these commands interchangeably.

Figure 13-18. A simple content page at runtime The real magic starts when you create multiple pages that use the same master page. Now, each page will have the same header and footer, creating a seamless look across your entire website.

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Now that you ve seen a master page example, it s worth taking a look behind the scenes to see how you implement the master page. When you create a master page, you re building something that looks much like an ordinary ASP .NET web form. The key difference is that although web forms start with the Page directive, a master page starts with a Master directive that specifies the same information. Here s the Master directive for the simple master page shown in the previous example: <%@ Master Language="C#" AutoEventWireup="true" CodeFile="SiteTemplate.master.cs" Inherits="SiteTemplate" %> The ContentPlaceHolder is less interesting. You declare it like any ordinary control. Here s the complete code for the simple master page: <%@ Master Language="C#" AutoEventWireup="true" CodeFile="SiteTemplate.master.cs" Inherits="SiteTemplate" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server">

Next we write a function to select an item (that is, to apply the .active class) based on its numerical index in the list of items. This list is zero-indexed. Listing 12-42 shows the selectSuggestion() class, which works by looping over all list items and adding the .active class if it matches the passed-in argument. Note that this function also deselects every other list item. In effect we can use this function to ensure no items are selected at all by passing an invalid index (such as -1). Listing 12-42. Selecting a Single Suggestion Based on Its Index (SearchSuggestor.class.js) selectSuggestion : function(idx) { var items = this.container.getElementsBySelector('li'); for (var i = 0; i < items.size(); i++) { if (i == idx) items[i].addClassName('active'); else items[i].removeClassName('active'); } }, Next, we write a function to determine the index of the item that is currently selected, shown in Listing 12-43. This is in some ways the opposite of the selectSuggestion() function. It works almost identically, but rather than updating the class name, it checks instead for the presence of the .active class. If no items are currently selected, then -1 is returned. Listing 12-43. Determining the Index of the Selected Suggestion (SearchSuggestor.class.js) getSelectedSuggestionIndex : function() { var items = this.container.getElementsBySelector('li'); for (var i = 0; i < items.size(); i++) { if (items[i].hasClassName('active')) return i;

The MySQL 5.0 command-line tool is installed in the bin folder of the MySQL 5.0 installation. If the defaults have been accepted, it will be in the C:\Program Files\MySQL\MySQL Server 5.0\bin folder. Specifying the server, database, and security credentials for mysql.exe is similar to SQLCMD. To specify the server you want to connect to, you use the -h parameter, followed by the name of the server. If the server isn t specified, an attempt will be made to connect to MySQL on the local machine. You specify the security credentials you want to use with the -u and -p parameters, as with SQLCMD, except that with mysql.exe, the switches themselves must be lowercase. If you want mysql.exe to prompt for the password, specify the -p parameter without a value. You can specify the database you want to connect to by using the -D parameter or by simply adding the database name as the last thing on the command line. If you don t specify a database, you ll connect to the server but won t connect to a database; therefore, you must change to the database you want to access with the USE query. So, to connect to the Players database on the local machine using the band account, use the following command line: mysql -u band -p Players

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