VBA:当行为空时退出For循环

Question

我使用以下代码将行导出到单个文本文件:

Sub export_Test()

Dim firstRow As Integer, lastRow As Integer, fileName As String
Dim myRow As Integer,  myStr As String

firstRow = 10 
lastRow = 29

For myRow = firstRow To lastRow

     fileName = "C:\mallet\test\" & Cells(myRow, 1) & ".txt"
     Open fileName For Append As #1
     myStr = Cells(myRow, 2).Value
     Print #1, myStr
     Close #1
Next

End Sub

问题在于此代码适用于特定的行数。我想将此代码用于不同的数据样本，因此 Excel 文件中的行数会有所不同，并且可能有数千行。我需要将 lastRow 变量设置为无限数，并在遇到空行时退出 For 循环。

Answer 1

此代码将从第 10 行开始运行，直到在第二列中找到空白单元格。请注意，我还稍微缩短了您的代码(尽管它仍然对文件进行相同的写入操作):

Sub export_Test()
    Dim myRow As Long
    myRow = 10
    While Cells(myRow, 2).Value <> ""
        Open "C:\mallet\test\" & Cells(myRow, 1) & ".txt" For Append As #1
        Print #1, Cells(myRow, 2).Value
        Close #1
        myRow = myRow + 1
    Wend
End Sub