基于多变量的 VBA 案例选择

Posted 2023-05-07

【中文标题】基于多变量的 VBA 案例选择

【英文标题】：VBA Case Select based on Multiple Variables

【发布时间】：2021-03-17 11:14:25

【问题描述】：

尝试构建一个 Select Case 语句，该语句执行与嵌套 if 函数类似的工作。本质上，我想根据两列（列 P 和列 I）的值给一个单元格一个值（在列 i + 1 中），然后将它应用到整个数字列到最后一行（因此 lr 变量） 目前，select case 行出现类型不匹配错误。

  Dim i As Long
    Dim RowNum As Long
    Dim lr As Long

    Set i = 10
    RowNum = 2
    lr = Worksheets("1").cells.Find("*", cells(1, 1), xlFormulas, xlPart, xlByRows, xlPrevious, False).Row
    Set tbl = ActiveSheet.ListObjects("1")
    
    Do Until cells(RowNum, i + 1) = lr
                    Select Case cells(RowNum, "P") And cells(RowNum, "I").Value
                    Case Is = "1" And "Available"
                            cells(RowNum, i + 1).Value = "Purchase"
                    Case Is = "2" And "Not Available"
                            cells(RowNum, i + 1).Value = "Attempt Purchase"
                    Case Is = "3"
                            cells(RowNum, i + 1).Value = "Purchase Automatic"
                    Case Is = "4" 
                            cells(RowNum, i + 1).Value = "Do not Purchase"
                    Case Else
                            cells(RowNum, i + 1).Value = "N/A"
    End Select
    RowNum = RowNum + 1
    Loop

非常感谢任何帮助。谢谢

【问题讨论】：

您使用了错误的选择案例语法。检查***.com/questions/21319788/…。如果你想要is 语法il.pw.edu.pl/~iap/IAPZ/vbkurs/iso2/rozkazy/select.htm

【参考方案1】：

多选案例

Select Case 需要一种表达方式。用If 声明处理另一个。

片段

Select Case Cells(RowNum, "P")
    Case Is = "1"
        If Cells(RowNum, "I").Value = "Available" Then
            Cells(RowNum, i + 1).Value = "Purchase"
        End If
    Case Is = "2"
        If Cells(RowNum, "I").Value = "Not Available" Then
            Cells(RowNum, i + 1).Value = "Attempt Purchase"
        End If
    Case Is = "3"
            Cells(RowNum, i + 1).Value = "Purchase Automatic"
    Case Is = "4"
            Cells(RowNum, i + 1).Value = "Do not Purchase"
    Case Else
            Cells(RowNum, i + 1).Value = "N/A"
End Select

【参考方案2】：

如果您阅读过 Select Case 结构的工作原理，您会意识到您构建 Select Case 的方式是不可能的。在 VBA IDE 中，将光标放在 Select 上并按 F1。这将打开 Select Case 的帮助页面。

要实现类似于您需要实现的目标，您需要连接两个值以给出一个值并相应地调整大小写值。下面的代码假定“CStr(Cells(RowNum, "I").Value" 等价于 "" 以使 Case 结构中的 Case 标签正常工作。

您还应该知道“Set i”是不正确的，因为 I 是值变量而不是引用变量。使用 i=10。

Dim i As Long
Dim RowNum As Long
Dim lr As Long

i = 10
RowNum = 2
lr = Worksheets("1").Cells.Find("*", Cells(1, 1), xlFormulas, xlPart, xlByRows, xlPrevious, False).Row
Set tbl = ActiveSheet.ListObjects("1")
    
Do Until Cells(RowNum, i + 1) = lr
    
    Select Case Trim$(CStr(Cells(RowNum, "P").Value) & CStr(Cells(RowNum, "I").Value))
                    
        Case "1Available"
        
            Cells(RowNum, i + 1).Value = "Purchase"
            
        Case Is = "2Not Available"
        
            Cells(RowNum, i + 1).Value = "Attempt Purchase"
            
        Case Is = "3"
        
            Cells(RowNum, i + 1).Value = "Purchase Automatic"
            
        Case Is = "4"
        
            Cells(RowNum, i + 1).Value = "Do not Purchase"
            
        Case Else
        
            Cells(RowNum, i + 1).Value = "N/A"
            
    End Select
    
    RowNum = RowNum + 1
    
Loop