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Note It s fine to simply delete the related data within the database when you delete a Player. The Formats that the Player supports are owned by the Player, so deleting the related data doesn t affect any data that it shouldn t. The same isn t true for the Manufacturer and Format tables: you can t delete a Manufacturer or a Format if they re in use. In the code download, you ll find that Manufacturers_Details.aspx and Formats_Details.aspx prevent any deletions from being made if the Manufacturer or Format is in use.

If you use an account with more permissions than you need, you open the door to a wide range of potential hacks and attacks. It s always best to use a dedicated account for running ASP.NET code and to restrict what it can do to the bare minimum.

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Listing 11-12 shows the getFullpath() function, which returns the full path to the uploaded file. This basically just combines the GetUploadPath() function with the record ID. Listing 11-12. Retrieving the Full Filesystem Path of an Uploaded File (BlogPostImage.php) < php class DatabaseObject_BlogPostImage extends DatabaseObject { // ... other code public function getFullPath() { return sprintf('%s/%d', self::GetUploadPath(), $this->getId()); } // ... other code } > Next, we will implement the uploadFile() function. All this function does is store the temporary path of the uploaded file in anticipation of the save() method being called. When save() is called on a new record of DatabaseObject_BlogPostImage, the preInsert() and postInsert() callbacks will be executed. The copying of the file from its temporary location to its new location will occur on postInsert(). Listing 11-13 shows the code for uploadFile(), which writes the temporary path to an object property for later use. Note that it also does some basic error checking to ensure the temporary file exists and is readable. Listing 11-13. Setting the Location of the Uploaded File so It Can Be Copied Across (BlogPostImage.php) < php class DatabaseObject_BlogPostImage extends DatabaseObject { protected $_uploadedFile; // ... other code public function uploadFile($path) { if (!file_exists($path) || !is_file($path)) throw new Exception('Unable to find uploaded file'); if (!is_readable($path)) throw new Exception('Unable to read uploaded file'); $this->_uploadedFile = $path; }

You ll notice that you re also catching any errors that may occur during the DELETE against the WhatPlaysWhatFormat table: catch (Exception ex) { lblError.Visible = true; lblError.Text = ex.Message; e.Cancel = true; } As with the earlier example, whenever there is an error, you display the error to the user using the Label. You re also setting the Cancel property of the GridViewDeleteEventArgs object to true. This tells the GridView that you don t want the DELETE operation to take place as there has been an error, you don t want another error to potentially occur when you try to delete the data from the Player table.

.NET settings to use a different account, you need to perform the following To change the ASP steps: 1. Open the machine.config file in the c:\Windows\Microsoft.NET\Framework\ v2.0.50727\Config directory using Notepad. 2. Search for the setting autoConfig="true". You ll find the processModel setting shown here:

<processModel autoConfig="true" /> 3. To specify an account other than ASPNET, you need to add the userName and password attributes. You can use another account that s defined on the system, as shown here: <processModel autoConfig="true" userName="MyASPAccount" password="s!pec5%_degrees" /> Alternatively, you can set the userName attribute to System and set the password to AutoGenerate. This tells ASP .NET to use the local system account, which is a local account with wide-ranging permissions. <processModel autoConfig="true" userName="System" password="AutoGenerate" />

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