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If a report is configured to render from a snapshot, Reporting Services performs the data retrieval and processing before a user opens the report. This can be useful when you need to capture data in a report as of a particular point in time, such as a financial statement at monthend, or when queries take a long time to execute, such as year-to-date queries in a large transactional database. You can create a snapshot manually, but typically, a snapshot is created on a scheduled basis to update a report with more current data. Either way, Reporting Services uses the query results and the report layout to create an intermediate report that is stored as a snapshot in the ReportServer database. When a user requests the report, Reporting Services retrieves the intermediate report for rendering and delivery to the user.

Note that if the ASPX markup is hosted by the content placeholder of a master page, the composed ID will be longer because it will be prefixed by the ID of the placeholder too:

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cs = New CryptoStream(souFs, encr.CreateDecryptor, CryptoStreamMode.Read)

Microsoft Windows Server 2003 Inside Out Note Because profiles are hidden system files, they aren t automatically displayed in Windows Explorer. Choose Folder Options from the Tools menu, and then click the View tab. Under Advanced Settings, select Show Hidden Files And Folders. Note also that a mandatory profile must be available for a user to log on. If for some reason the user profile becomes unavailable, the user will not be able to log on. Because of this, you should check the security on the profile to ensure that the user can access it.

Windows Server 2003 distribution CD).

3. Click the Paragraph dialog box launcher, and then in the Paragraph dialog box,

In Visual C#, you need to take these two steps to declare an event: Declare a delegate. A delegate declares and gives a name to a method signature. By convention, the name of the delegate ends in EventHandler. Declare an event whose type is that of the delegate declared in the preceding step.

To drop a table using SQL Server Management Studio from the Object Explorer, follow these steps: 1. In Object Explorer view, connect to the server instance of your choice, and then expand the server s Databases folder. 2. Expand the database name and expand Tables, and then right-click the table you want to delete. 3. Select Delete on the shortcut menu and click OK to confirm the deletion. If you want to remove only the data in a table, use either the TRUNCATE TABLE or DELETE command. The DELETE statement removes all rows in a table or removes only a subset of rows if you use the conditional WHERE clause. All rows deleted are recorded in the transaction log. The TRUNCATE TABLE statement always removes all rows from a table. It does not record the deleted rows in the transaction log, and a WHERE clause cannot be used. TRUNCATE TABLE is much faster than DELETE when the desired result is the removal of all of the rows from a table. Both statements release the space occupied by the deleted rows for the storage of new data.

You can also add static rows and columns, called static groups, to the matrix. By having such rows or columns, you can have multiple aggregations for a single field. For example, your matrix currently displays the aggregated Sales Amount, but you could also add the aggregated Order Quantity. If you have column groups in your report, each column group will display the set of static columns, that is, Sales Amount and Order Quantity. Static columns in a matrix are similar to the columns in a table data region because there is a fixed number of static columns per column group.

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Boolean value, indicates whether empty string values are automatically converted to null values when any contents edited in the control s interface are saved back to the data source. Gets or sets the index of the item being edited. Gets the item that is currently in edit mode within a ListView control. The type of the item is ListViewItem. Gets or sets the number of items to display per group. Gets or sets the ID of the page element where the content for the ListView groups will be placed. The placeholder must be a server element flagged with the runat attribute. If a value for this property is not specified, a value of groupPlaceholder is assumed. Gets the item that is currently in insert mode within a ListView control. The type of the item is ListViewItem. Gets or sets the location of the insert template. Feasible values are defined in the InsertItemPosition enumerated type: FirstItem, LastItem, or None. Gets or sets the ID of the page element that will host data-bound items. The placeholder must be a server element flagged with the runat attribute. If this property is not specified, a value of ItemPlaceholder is assumed. Gets the collection of bound items. Gets the data-key array of values for the selected item. This value coincides with SelectedValue except when multiple key fields are used. Gets or sets the index of the currently selected item. Gets the data-key value of the first key field of the selected item. Gets the sort direction of the field or fields being sorted. Gets the sort expression that is associated with the field or fields being sorted.

Figure 38-1.

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