编译错误-必需变量-无法分配给此表达式 [英] Compile Error - Variable Required-can't assign to this expression

问题描述

这是我要复制的代码:

Private Sub btnRefresh_Click()
    Dim W As Worksheet: Set W = ActiveSheet
    Dim Last As Integer:  Last = W.Range("A100").End(xlUp).Row
    If Last = 1 Then Exit Sub
    Dim Symbols As String
    Dim i As Integer
    For i = 2 To Last
        Symbols = Symbols & W.Range("A" & i).Value & "+"
    Next i
    Symbols = Left(Symbols, Len(Symbols - 1))
    Debug.print Last 
    Debug.print Symbols
End Sub

我很确定问题出在第三行.我原来写的是

I'm pretty sure that the issue is in the third line. I had originally written

Dim Last as Integer: Set Last = W.Rang("A100").End(xlUp).Row

我意识到 Set 仅适用于对象，因此我将其删除.现在，我收到错误消息:

I realized that Set was only for objects and so I removed it. Now I receive the error message:

编译错误.必需变量-无法分配给该表达式.

Compile Error. Variable Required-cannot assign to this expression.

有什么不好的主意吗?

推荐答案

此行:

Symbols = Left(Symbols, Len(Symbols - 1))

您正在尝试从字符串中减去数字.我认为应该是

You're trying to subtract a number from a string. I think it should be

Symbols = Left(Symbols, Len(Symbols) - 1)

要从 Symbols 的长度中减去，当您遇到编译错误时，它将突出显示该错误所在的行.就我而言，它突出显示了减号.

To subtract from the length of Symbols When you get a compile error it'll highlight the line that the error is on. In my case it highlighted the minus sign.

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