然后,使用Is Nothing来检查范围是否为空。如果范围为空,将显示一个消息框提示范围为空;否则,将显示一个消息框提示范围不为空。 VBA的用户定义范围可以在许多场景中发挥作用,例如: 数据处理和分析:通过定义范围,可以轻松地对数据进行排序、筛选、计算和分析。 数据导入和导出:可以使用范围来指定要导入或导出的数据...
2）If myCell.Count = 1 And IsNumeric(myCell) And Not IsEmpty(myCell) And Not Intersect(myRange, myCell) Is Nothing Then 以上语句是测试的条件：① myCell.Count = 1 是否选择的单元格数量为1 ② IsNumeric(myCell) 是否选择的单元格为数值 ④ Not IsEmpty(myCell) 所选单元格不为空 ⑤ ...
The VBAIs Nothing statementuses theVBA “Is” Operatorand checks to see an object has beenassigned to an object variable. SubCheckObjectDimrngasRangeIfrngIsNothingthenMsgbox"Range not assigned"EndIfEndSub We can also useNotwith Is Nothing with anIf statementto make sure that a Range has been...
还可以使用Find方法来判断,如下面的代码: Sub CheckIfBlandAdd2() If Range("A1:A100").Find("*", , xlValues, , xlByColumns,xlPrevious) Is Nothing Then MsgBox "单元格都为空" Else MsgBox "单元格不全为空单元格" End If...
Sub mm()Dim a a = 7 …… Set a = NothingEnd Sub
导语：为了帮助想要快速学会Excel VBA的朋友，特以《Excel Programming Weekend Crash Course》这本书为...
IsEmpty 在变量未初始化或显式设置为 Empty 时返回 True；否则，返回 False。如果 expression 包含多个变量，则始终返回 False。IsEmpty 仅返回变量的有⽤信息。⽰例：此⽰例使⽤ IsEmpty 函数确定是否已初始化变量。Dim MyVar, MyCheckMyCheck = IsEmpty(MyVar) ' Returns True.MyVar = Null ' Assign ...
Sub test()Dim rngToCheck As RangeDim rngPrecedents As RangeDim rngPrecedent As RangeSetrngToCheck =Range("A1")OnErrorResumeNextSetrngPrecedents = rngToCheck.PrecedentsOnErrorGoTo0IfrngPrecedentsIsNothingThenDebug.Print rngToCheck.Address(External:...
MyVar = "459.95" ' Assign value.MyCheck = IsNumeric(MyVar) ' Returns True. MyVar = "45 Help" ' Assign value.MyCheck = IsNumeric(MyVar) ' Returns False. 2,IsNull 函数 返回指示 表达式是否包含无效数据 (Null) 的 Boolean 值。 语法 ...
After you have the ContactItem, you must check the name of the company for each person. Since the ContactItem object stores information about a contact, there must be a property for the company name, but since you don't know the name of that property, you must use one of the following...