RE: Làm thế nào đánh số trang của một report có nhiều nhóm
ledangvan > 18-04-12, 03:56 PM
Bác Noname ơi bài này nó hướng dẫn tạo cả phần tổng trang theo nhóm, em làm mãi mà không ra, nhờ bác xem giúp, nếu bác làm demo được càng tốt
Prepare the reports and group the pages
To group the pages, a two-pass formatting is used, along with the Page property, to reset the total pages for each group. The first formatting pass sets the first page number in a new group to the value "1" and then writes the total number of pages in the group to a table. The second formatting pass retrieves the total number of pages for each group. These values are then used to display the page number in the Page Footer section of the report. To prepare the reports and group the pages, follow these steps.
Note The following steps use the "Employee sales by country" report in the Northwind.mdb sample database to demonstrate how to prepare the report and how to group the pages in the report.
Caution If you follow the steps in this example, you modify the sample database Northwind.mdb. You may want to back up the Northwind.mdb file and follow these steps on a copy of the database.
Start Access.
Open the Northwind.mdb sample database.
Create a table with the following properties:
Table:
---------------------------------
Table Name: Category Group Pages
Field Name: Country
Data Type: Text
Field Size: 15
Indexed: Yes (No Duplicates)
Field Name: Page Number
Date Type: Number
Field Size: Long Integer
PrimaryKey: Country
In the Database window, click Reports under Objects.
In the right pane, right-click Employee Sales By Country, and then click Design View.
Set the ForceNewPage property of the Country Footer section to After Section. To do this, follow these steps:
In Design view, right-click Country Footer, and then click Properties.
In the Section: GroupFooter1 dialog box, click the Format tab.
In the Force New Page box, click After Section, and then close the Section: GroupFooter1 dialog box.
Make sure that the event procedure for the OnFormat event of the Country Header section sets the page number to "1" when a new group starts. To do this, follow these steps:
On the View menu, click Code to open the Visual Basic Editor.
In the Object box, click GroupHeader0.
In the Procedure box, click Format.
Make sure that the following code appears in the code window:
Private Sub GroupHeader0_Format(Cancel As Integer, FormatCount As Integer)
'Set page number to 1 when a new group starts.
Page = 1
End Sub
Define a variable for a Database object, a variable for a RecordSet object, and a function that retrieves the total number of pages in a group. To do this in the Visual Basic Editor, append the following code.
Note The Visual Basic Editor may already contain some code. Do not remove any existing code. Append the following code to any existing code:
Dim DB As Database
Dim GrpPages As RecordSet
Function GetGrpPages ()
'Find the group name.
GrpPages.Seek "=", Me![Country]
If Not GrpPages.NoMatch Then
GetGrpPages = GrpPages![Page Number]
End If
End Function
Create an event procedure for the OnOpen event of the report. To do this, append the following code:
Private Sub Report_Open (Cancel As Integer)
Set DB = dbengine.workspaces(0).databases(0)
DoCmd.SetWarnings False
DoCmd.RunSQL "Delete * From [Category Group Pages];"
DoCmd.SetWarnings True
Set GrpPages = DB.OpenRecordset("Category Group Pages", DB_Open_Table)
GrpPages.Index = "PrimaryKey"
End Sub
Create an event procedure for the OnFormat event of the Page Footer section of the report. To do this, append the following code:
Private Sub PageFooter_Format (Cancel As Integer, FormatCount As Integer)
'Find the group.
GrpPages.Seek "=", Me![Country]
If Not GrpPages.NoMatch Then
'The group is already there.
If GrpPages![Page Number] < Me.Page Then
GrpPages.Edit
GrpPages![Page Number] = Me.Page
GrpPages.Update
End If
Else
'This is the first page of the group. Therefore, add it.
GrpPages.AddNew
GrpPages![Country] = Me![Country]
GrpPages![Page Number] = Me.Page
GrpPages.Update
End If
End Sub
Close the Visual Basic Editor.
In Design view, add two text box controls with the following properties under the Page Footer section:
Text box:
-----------------------------
Name: GroupXY
ControlSource: =GetGrpPages()
Visible: No
Text box:
------------------------------
Name: ReferToPages
ControlSource: =Pages
Visible: No
Note The ReferToPages text box forces the report to use the two-pass formatting when the report is printed.
In Design view, click PageNumber in the Object drop-down list on the Formatting toolbar.
On the View menu, click Properties.
In the Textbox: PageNumber dialog box, click the Data tab. Put the following code in the Control Source box:
=[Country] & " - Page " & [Page] & " of " & [GroupXY]
On the View menu, click Layout Preview to preview the report.
Note You must enter the correct date parameter values to preview the report.
The Page Footer displays the current page and the total pages for each group in the "Page of Pages" format.