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Microsoft Office Access 2003 Inside Out Unlike the navigation bar on a form, you can hide buttons that you don t want to make available to the user. For example, if you have a read-only page, you can hide the Delete, Save, Undo, and New buttons. You should hide these buttons on a read-only page, because Access displays them disabled on a read-only page, which could confuse your users. Displaying and hiding the built-in buttons is simple. Right-click the record navigation control and then choose Navigation Buttons from the shortcut menu as shown in Figure 27-21. To remove a button, clear the check box next to the button name. You can also click the record navigation control to select it, click the button you want to remove inside the navigation control to select that button, and press Delete to remove the button. To restore a removed button, right-click the record navigation control, choose Navigation Buttons on the shortcut menu, and click the button name.

books.Element("book").Remove(); // remove the first book books.Elements("book").Remove(); // remove all books

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The Boot file system subkey has as its default value Driver Group When developers design a device driver s installation script, they can specify that the device driver belongs to a driver group The driver groups that a system defines are listed in the List value of the HKLM\SYSTEM\CurrentControlSet\Control\ServiceGroupOrder key A developer specifies a driver as a member of a group to indicate to Windows at what point during the boot process the driver should start The ServiceGroupOrder key s primary purpose is to define the order in which driver groups load; some driver types must load either before or after other driver types The Group value beneath a driver s configuration registry key associates the driver with a group Driver and service configuration keys reside beneath HKLM\SYSTEM\CurrentControlSet \Services.

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You don t need to remove any buttons for this page because you re going to modify the page to allow updating in the next section. Whether you use the wizard to create your page or you design the page yourself, the default record navigation control displays the name of the recordset and built-in record location variables in the recordset label. As you can see in Figure 27-21, the wizard has created a recordset and named it tblDepartmentsWiz. This record navigation control lets the user move through the employee records for the selected department, so it s a good idea to change this label to something more meaningful. You can also remove or change the following builtin record location variables:

|0 displays the current record number. |1 displays the last record number in the current set when you design the page to dis-

play a list of records in sets. (See Figure 27-4 on page 1019.)

Although not as straightforward, the SetElementValue method on XElement can also be used to remove elements. To remove an element using SetElementValue, pass null as the parameter.

Building Data Access Pages To change the recordset label, click the record navigation control, click the recordset label inside the control to select it, and then click the Data tab in the Properties window as shown in Figure 27-22 to see the RecordsetLabel property.

Because you asked the wizard to sort by the LastName field, it placed that field first on the data access page. It makes more sense to display the fields in the sequence Employee Number, 1043

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books.SetElementValue("book", null);

Figure 27-23. A wizard-generated data access page with a group filter drop-down list and a customized record-navigation control.

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As you can see, the recordset label actually has two parts, separated by a semicolon. The record navigation control uses the first part when you have set the section to display one record at a time. It uses the second part when you set the group-level properties to display more than one or all records. In this case, you should change tblDepartmentsWiz in both parts to Employees. When you switch to Page view, your page should now look like Figure 27-23.

If you re interested in keeping your element around but removing all of its content, you can use the Value property. To delete the content of the author element ( Steve Eichert ) in the following XML:

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Microsoft Office Access 2003 Inside Out First Name, Middle Name, and Last Name. To rearrange the controls, switch back to Design view and follow these steps:

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