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The Data Access Page Window in Page View
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To see what the finished page looks like, click the View button (shown in Figure 2-21) on the toolbar when you re in the Data Access Page window in Design view. From the Database window, you can also select the page name and then click the Open button, or right-click the page name and choose Web Page Preview from the shortcut menu. Figure 2-22 on the next page shows a Data Access Page window in Page view. You can experiment with this page to see how it works. Use the buttons on the Facilities navigation bar to move to the facility you want. Use the buttons on the Rooms navigation bar to see the rooms defined for the selected facility in groups of five. Note that you can also click in the facility name and then click options on the Facilities navigation bar to sort or filter what you see.
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Part 1: Understanding Microsoft Access
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Microsoft Office Access 2003 Inside Out
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Figure 2-22. The dapXmplFacilitiesAndRooms data access page in Page view.
You can also test this page to see how it works in Internet Explorer. Close the data access page in Access and find the dapXmplFacilitiesAndRooms.htm file in the \Webs\DataAccessPages subfolder of your sample files in Windows Explorer. Double-click the file to open it in Internet Explorer. You should see a result, as shown in Figure 2-23.
Figure 2-23. The dapXmplFacilitiesAndRooms data access page displayed in Internet Explorer.
Part 1: Understanding Microsoft Access
The Many Faces of Microsoft Access Close Internet Explorer and return to the Housing Reservations database in Microsoft Access to continue the tour. Note If you open a table in the Housing Reservations database in Design view, Access locks the table so no other user or program can reference or change the data or object designs. If you try to display a data access page that uses data from the table in Internet Explorer while the table is still open in Design view, you will see no data because Access has the data locked.
Macros
You can make working with your data within forms and reports much easier by triggering a macro action. Microsoft Access provides more than 40 actions that you can include in a macro. They perform tasks such as opening tables and forms, running queries, running other macros, selecting options from menus, and sizing open windows. You can also group multiple actions in a macro and specify conditions that determine when each set of actions will or will not be executed by Access. In the Database window, click Macros on the Object bar to see the list of macros in the Housing Reservations database, shown in Figure 2-24. At the upper left corner of the Database window you can see three toolbar buttons to run the selected macro, open the selected macro in Design view, or begin creating a new macro.
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Figure 2-24. The macro list in the Housing Reservations database.
Macros are a great way to learn about the basics of responding to events and automating actions in an Access database. However, for any application that you intend to distribute to others, you should use Visual Basic to handle events and automate actions. Nearly all the sample databases use Visual Basic exclusively. You can take a look at the design of the single macro example in the Housing Reservations database, shown in Figure 2-25 on the next page, by selecting it and then clicking the Design button on the Database window toolbar.
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Part 1: Understanding Microsoft Access
Microsoft Office Access 2003 Inside Out
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Figure 2-25. The design of the SampleMacro macro object in the Housing Reservations database.
You can design multiple macro actions within a single macro object and give each one a name in the first column. Any unnamed lines following a named line all belong to the named macro. In the second column, you can optionally specify a condition test that must be true for the macro command on that line to execute. You can use a continuation indicator (...) on subsequent lines to specify additional commands that should also execute when the condition is true. You select the action you want to run from a drop-down list in the Action column and set the arguments required for the action in the Action Arguments area in the bottom part of the design window. Some of the limitations of macros include the lack of handling any errors that might occur, limited ability to branch to other actions, and very limited ability to loop through a set of actions. If you want to see what this macro does, click the Run button (the exclamation point) on the toolbar to execute it. You should see a greeting message appropriate to the time of day on your machine. To learn more about events and the macro design facility, see 21, Understanding Event Processing. You can find one sample application on the companion CD that is automated entirely using macros WeddingListMC.mdb. Close the macro design window to return to the Database window.
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