VBA , . MS Office; VBA , . MS Office; Access, Word Excel. VBA.
. Access . , . . 225. Variant. ( , ) Null. , - , IsNull ().
( , ), . :
| Byte | Currency @ |
| Integer % | String $ |
| Long & | Date |
| Single! | Boolean |
| Double # | Variant |
Dim.
Dim < > As < >.
, Dim i As Integer, j As Integer Dim x As Double
. Dim < > As String , Dim < > As String*< > - . :
Dim str1 As String Dim str2 As String*20.
, . Option Explicit. Access .
. :
1. . , ;
2. (). () () , () ;
3. . ;
4. . Public Global.
, , Access , . .
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. . Null, 0, . , , Static. , . , . , , , . , Static.
C Dim . . :
Dim myArray(20) As String*10
Dim myArray(5, 5) As Double Dim myArray(3, 3, 3) As Double
0, , 21 , 6 6. , . , Dim my Array(1 20) As String.
VBA . , ReDim . . Preserve.
Dim dynArray() As Double
ReDim Preserve dynArray (5, 2, 4)
LBound() UBound() . Erase.
VBA Const. .
Const pi As Double = 3.1415
VBA , Access. Access , Object, . :
Dim myObject As Object ,
Dim myControl As Control ,
Dim myForm As Form .
Set.
Set myForm = Forms![ ].
. TypeEnd Type.
Type tPhone
number As String*15
type As String*10
End Type
..
Dim tel As tPhone
tel.number = 3334455
tel.type = "".
, , With End With.
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Dim myForm As Form
Set myForm = Forms![ ]
With myForm
.Top=1000
.Left=1000
.Width=5000
. Height=4000
End With.
. , , .
. VBA . , Sub End Sub Function End Function. :
Sub < < [(<>)]
<>
End Sub
Function < > [(<>)] As < >
<>
< > = < >
End Function
. , . Call. , . Call. . , , . :
Call mySub("", 4, i+1)
mySub "", 4, i+1
total_price = myFunc([]*[], [])
: . ( ByRef). . . , . ByVal. BVal/ByRef < > [()] [As <un>]. :
Sub mySyb(srteet As String, ByVal building As Integer, ByRef apt As Byte)
Forms![]![] = srteet & " " & building & ", " & apt
End Sub
Function myFunc(full_price As Currency, shipment As Single) As Currency
myFunc = full_price * 1.2 + shipment
End Function
Exit Sub Exit Function.
. , ( ) . . If Select Case. If .
If <> Then <>
If :
If <> Then
<>
Else
<>
End If
If.
If <> Then
<>
Else If < 2> Then
<>
Else
<>
End If
, If Select Case End Select. , , , .
Select Case < >
Case < 1> [, < 2>, ]
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(, , 1, 2, )
[Case < 3> To < 4>]
(, , , 3 4)
[Case Is < >]
(, , .)
[Case Else]
(, , )
End Select
VBA :. GoTo <>. GoTo , .
VBA : (For Next) (Do Loop).
ForNext .
For <> = < > To < > [Step <>]
<>
Next <>
Exit For.
Do While Loop, While Wend . While Wend . , True.
Do While < [=True]>
<>
Loop
Do Until Loop ,
Do Until < [< > True]>
<>
Loop
, .
Do
<>
Loop While < [=True]>
Do
<>
Loop Until < [=False]>
Exit Do.
For Each
For Each <> In <>
<>
Next <>
<> , . 1 ,
Dim ctrl As Control
For Each ctrl In Form
1.AddItem ctrl.Name
Next ctrl
