vb 中如何取一个文本框中从第几行到第几行的数据？

a=split(text1,vbcrlf)

然后数组a中, a(0)是第1行, a(1)是第2行, 以下类推..

如果你想要第5行到第17行, 可以使用:
a=split(text1,vbcrlf)
redim preserve a(4 to 16)
b=join(a,vbcrlf)

读取Text指定行号内容
'添加 Text1 Text2 Command1
'Text1 Multiline属性要设为 True
'Text2 中输入你要读取第几行的内容

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Sub RtlMoveMemory Lib "KERNEL32" (lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)
Const EM_GETLINE = &HC4
Const EM_LINEINDEX = &HBB
Const EM_LINELENGTH = &HC1
Dim a$, fname$
Private Sub Form_Load()
fname = "c:\axleop.txt"
Open fname For Input As #1
Text1.Text = ""
While Not EOF(1)
Line Input #1, a
Text1.Text = Text1.Text & a & vbCrLf
Wend
Close #1
End Sub

Private