VBA里数值类型Integer、Long那些,内存布局比较简单,无非是1个、2个、4个连续的字节。 而String类型是有点不一样的,有了指针Pointer讲到的取指针函数,我们就可以对String深入了解一下。 深入了解数据类型有什么用? 比如你想用C语言写dll给VBA调用,C语言可是没有String类型的,C的函数该如何去用?这就涉及到了数据类型
超过integer变量的范围了，因此报错。如果，我们在处理数据的时候，循环遍历的最大次数，超过了i（integer变量）的范围，那么代码同样会报错，如下例子：解决方法：声明整数型的变量，同一使用Long类型，long的范围足够大，几乎不会出现超过范围的事情。而且Long比integer更加高效。将integer改为long，代码就不会报错了。
Dim x As Integer 整数 Dim st As String 文本 Dim rg As Range 对象 Set rg = Range("A1") ·对象赋值 Dim arr(1 to 10) As Integer 数组 Long 长整数, Single 单精度,Double 双精度,Date 时间 Public x As Interger ‘声明全局变量,所有模块都能用,不建议,可以使用函数取变量 isnumeric(x) 判断...
Sub InsertMultipleColumns() Dim i As Integer Dim j As Integer ActiveCell.EntireColumn.Select On Error GoTo Last i = InputBox("Enter number of columns to insert", "Insert Columns") For j = 1 To i Selection.Insert Shift:=xlToRight, CopyOrigin:=xlFormatFromRightorAbove Next j Last: Exit Su...
'treated as a variable type of long integer. ActiveCell.Offset(0, 1).FormulaR1C1 = _ ActiveCell.Offset(0, -1) & " " & ActiveCell.Offset(0, 0) ActiveCell.Offset(1, 0).Select Loop End Sub 注意:语句 ActiveCell.Offset (0, 1) 。FormulaR1C1 可以替换为语句 ActiveCell.Offs...
type Optional. Data type of the value returned by a Function procedure; may be Byte, Boolean, Integer, Long, LongLong, LongPtr, Currency, Single, Double, Decimal (not currently supported), Date, String (variable length only), Variant, a user-defined type, or an object type. (LongLong ...
Dim i As Integer Dim rg As Range Set rg = Range("a1:c14") With rg For i = 14 To 2 Step -1 If .Cells(i, 1).Value = .Cells(i -1, 1).Value Then .Rows(i).Delete End If Next End With Set rg = Nothing 如果A列某行的内...
STypechar(1)default'0'check(length(SType)=1));--常用的sql语句CREATETABLEIFNOTEXISTScommonSQL(IDinteger notnullprimary key autoincrement,描述 text notnullunique,dbpathID integer notnullcheck(typeof(dbpathID)='integer')referencesdbpath(ID)on update cascade ondeletecascade,strsql text notnull,时间...
此示例使用Type语句定义用户定义的数据类型。Type语句仅在模块级别上使用。 如果它在类模块中出现,则Type语句的前面必须有关键字Private。 VB Type EmployeeRecord' Create user-defined type.IDAsInteger' Define elements of data type.NameAsString*20AddressAsString*30PhoneAsLongHireDateAsDateEndTypeSubCreateRecord...
typeOptional. Data type of the argument passed to the procedure; may beByte,Boolean,Integer,Long,LongLong,LongPtr,Currency,Single,Double,Decimal(not currently supported),Date,String(variable length only),Object,Variant, a user-defined type, or an object type. (LongLongis a valid declared type...