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You might have noticed that Access made available some additional list boxes and buttons on the Formatting toolbar when you selected the EmployeeNumber control When you click a text box in a report in Design view, Access enables drop-down list boxes on the Formatting toolbar that make it easy to select a font and font size Access also enables Bold, Italic, and Underline buttons that let you set the text properties To the right of these buttons are three buttons that set text alignment: Align Left, Center, and Align Right You can also set the foreground, background, and border colors; border width; and special effects from buttons on this toolbar Reports can be even more complex than forms, but building a simple report is really quite easy.

Ordinarily, if a program tries to read data from a bad disk sector, the read operation fails and the data in the allocated cluster becomes inaccessible. If the disk is formatted as a faulttolerant NTFS volume, however, the Windows fault-tolerant driver dynamically retrieves a good copy of the data that was stored on the bad sector and then sends NTFS a warning that the sector is bad. NTFS allocates a new cluster, replacing the cluster in which the bad sector resides, and copies the data to the new cluster. It flags the bad cluster and no longer uses it. This data recovery and dynamic bad-cluster remapping is an especially useful feature for file servers and fault-tolerant systems or for any application that can t afford to lose data. If the volume manager isn t loaded when a sector goes bad, NTFS still replaces the cluster and doesn t reuse it, but it can t recover the data that was on the bad sector.

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Access provides report wizards that you can use to automatically generate a number of standard report layouts based on the table or query you choose You ll find it simple to customize a report to suit your needs after the report wizard has done most of the hard work You ll learn how to customize a report in 15, Constructing a Report, and in 16, Advanced Report Design..

private System.Guid _ID; [Column(Storage = "_ID", Name = "ID", DbType = "UniqueIdentifier NOT NULL", IsPrimaryKey = true, CanBeNull = false)] public System.Guid ID { get { return _ID;} set{ _ID = value;} }

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The next three columns are similar. In each case, we specify the name of the column that corresponds to our property. The data type of each column is VarChar. The FirstName and LastName are optional (NOT NULL and CanBeNull = false). The others allow for null values in the database. If either of these were value types rather than strings, we would need to use the nullable types introduced by the .NET Framework 2.0 for these properties.

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Microsoft Office Access 2003 Inside Out user wants to print all invoices. The code uses the filter it built (or the current filter on the frmInvoices form) to open the rptInvoices report in Print Preview. It also executes an SQL Update statement to flag all the invoices the user printed. If you look at code in the Current event of the frmInvoices form, you ll find that it locks all controls so that the user can t update an invoice that has been printed.

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[Column(Name = "LastName", DbType = "VarChar(50) NOT NULL", CanBeNull = false, UpdateCheck=UpdateCheck.Never)] public string LastName { get; set; } [Column(Name = "FirstName", DbType = "VarChar(30) NOT NULL", CanBeNull = false, UpdateCheck=UpdateCheck.Never)] public string FirstName { get; set; } [Column(Name = "WebSite", DbType = "VarChar(200)", UpdateCheck=UpdateCheck.Never)] public string WebSite { get; set; }

Sometimes it s useful to give the user an option to open a pop-up form that displays additional details about some information displayed on another form. As you move from one row to another in the main form, it would be nice if the form that displayed the additional information stayed in sync. Of course, the Current event of a form lets you know when you move to a new record. In the Wedding List sample database built with macros (WeddingListMC.mdb), the macros do some elaborate filtering to keep a pop-up form with additional city information in sync with the main form. However, doing it with macros is the hard way! The primary Wedding List sample application is in WeddingList.mdb, and it uses Visual Basic to provide all the automation. With Visual Basic, I was able to declare and use a custom event in the WeddingListForm form to signal the CityInformation form if it s open and responding to the events. In the Current event of WeddingListForm, I don t have to worry about whether the companion form is open. The code simply signals the event and lets the City Information form worry about keeping in sync with the main form. (The user can open the City Information form at any time by clicking the City Info button on the Wedding List form.) You can see these two forms in action in Figure 23-23.

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