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Syntax
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With <object reference> [<procedure statements>] End With
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Example
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To use shorthand notation on a recordset object to add a new row to a table, enter the following:
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Dim rcd As DAO.Recordset, db As DAO.Database Set db = CurrentDb Set rcd = db.OpenRecordset("MyTable", _ dbOpenDynaset, dbAppendOnly) With rcd ' Start a new record .Addnew ' Set the field values ![FieldOne] = "1" ![FieldTwo] = "John"
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Part 1: Part Title
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Part 5: Automating an Access Application
Microsoft Office Access 2003 Inside Out
![FieldThree] = "Viescas" .Update .Close End With
Part 1: Part Title
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To write the same code without the With statement, you would have to say:
Dim rcd As DAO.Recordset, db As DAO.Database Set db = CurrentDb Set rcd = db.OpenRecordset("MyTable", dbOpenDynaset, dbAppendOnly) ' Start a new record rcd.Addnew ' Set the field values rcd![FieldOne] = "1" rcd![FieldTwo] = "John" rcd![FieldThree] = "Viescas" rcd.Update rcd.Close
Running Macro Actions and Menu Commands
From within Visual Basic, you can execute most of the macro actions that Access provides and any of the built-in menu commands. Only a few of the macro actions have direct Visual Basic equivalents. To execute a macro action or menu command, use the methods of the DoCmd object, described below.
DoCmd Object
Use the methods of the DoCmd object to execute a macro action or menu command from within a Visual Basic procedure.
Syntax
DoCmd.actionmethod [actionargument],...
Notes
Some of the macro actions you ll commonly execute from Visual Basic include ApplyFilter, Close, DoMenuItem, FindNext and FindRecord (for searching the recordset of the current form and immediately displaying the result), Hourglass, Maximize, Minimize, MoveSize, OpenForm, OpenQuery (to run a query that you don t need to modify), OpenReport, and ShowToolBar. Although you can run the Echo, GoToControl, GoToPage, RepaintObject, and Requery actions from Visual Basic using a method of the DoCmd object, it s more efficient to use the Echo, SetFocus, GoToPage, Repaint, and Requery methods of the object to which the method applies.
Part 5: Automating an Access Application
Understanding Visual Basic Fundamentals
Examples
To open a form named frmCompanies in Form view for data entry, enter the following:
DoCmd.OpenForm "frmCompanies", acNormal, , , acAdd
To close a form named frmContacts, enter the following:
DoCmd.Close acForm, "frmContacts"
Executing a Menu Command
To execute a menu command, use the RunCommand method of either the DoCmd or Application object and supply a single action argument that is the numeric code for the command.
Syntax
[DoCmd.]RunCommand [actionargument],...
Notes
You can also use one of many built-in constants for actionargument to reference the command you want. When you use RunCommand, you can optionally leave out the DoCmd or Application object.
Examples
To execute the Save Record command from the Records menu, enter the following:
RunCommand acCmdSaveRecord
To switch an open form to PivotChart view (execute the PivotChart View command on the View menu), enter the following:
RunCommand acCmdPivotChartView
To open the Find window while the focus is on a form (choose the Find command from the Edit menu), enter the following:
RunCommand acCmdFind
Part 1: Part Title
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Note Visual Basic provides built-in constants for many of the macro action and RunCommand parameters. For more information, search on Microsoft Access Constants and RunCommand Method in Help.
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Part 5: Automating an Access Application
Microsoft Office Access 2003 Inside Out
Actions with Visual Basic Equivalents
22
Part 1: Part Title
A few macro actions cannot be executed from a Visual Basic procedure. All but one of these actions, however, have equivalent statements in Visual Basic, as shown in Table 22-4.
Table 22-4.
Visual Basic Equivalents for Macro Actions
Visual Basic Equivalent
No equivalent MsgBox statement or function Shell function Call subroutine SendKeys statement Variable assignment (=) Stop or End statement Exit Sub or Exit Function statement
Macro Action
AddMenu
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MsgBox RunApp RunCode SendKeys SetValue StopAllMacros StopMacro
Trapping Errors
One of the most powerful features of Visual Basic is its ability to trap all errors, analyze them, and take corrective action. In a well-designed production application, the user should never see any of the default error messages or encounter a code halt when an error occurs. Also, setting an error trap is often the best way to test certain conditions. For example, to find out if a query exists, your code can set an error trap and then attempt to reference the query object. In an application with hundreds of queries, using an error trap can also be faster than looping through all QueryDef objects. To enable error trapping, you use an On Error statement.
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