[英]Create a custom worksheet function in Excel VBA
I have a faint memory of being able to use VBA functions to calculate values in Excel, like this (as the cell formula): 我有一个微弱的记忆,能够使用VBA函数来计算Excel中的值,像这样(作为单元格公式):
=MyCustomFunction(A3)
Can this be done? 可以这样做吗?
EDIT: 编辑:
This is my VBA function signature: 这是我的VBA功能签名:
Public Function MyCustomFunction(str As String) As String
The function sits in the ThisWorkbook
module. 该函数位于
ThisWorkbook
模块中。 If I try to use it in the worksheet as shown above, I get the #NAME?
如果我尝试在工作表中使用它,如上所示,我得到
#NAME?
error. 错误。
Solution (Thanks, codeape): The function is not accessible when it is defined ThisWorkbook
module. 解决方案(谢谢,代码):定义
ThisWorkbook
模块时无法访问该功能。 It must be in a "proper" module, one that has been added manually to the workbook. 它必须位于“正确”模块中,该模块已手动添加到工作簿中。
Yes it can. 是的,它可以。 You simply define a VBA function in a module.
您只需在模块中定义VBA函数。 See http://www.vertex42.com/ExcelArticles/user-defined-functions.html for a nice introduction with examples.
有关示例的详细介绍,请参阅http://www.vertex42.com/ExcelArticles/user-defined-functions.html 。
Here's a simple example: 这是一个简单的例子:
Option Explicit Function MyCustomFunction(input) MyCustomFunction = 42 + input End Function
A1: 2 A2: =MyCustomFunction(A1)
The word input needs to be replaced as it is a basic keyword. 输入一词需要替换,因为它是一个基本关键字。 Try num instead.
请尝试使用num。 You can also go further by specifying a type, eg variant.
您还可以通过指定类型(例如变体)来进一步发展。
Function MyCustomFunction(num As Variant)
MyCustomFunction = 42 + num
End Function
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