vb根据文本内容控制按钮显示

有一个文本ok.txt
里面内容
1.txt
2.txt
3.txt

vb循环读出判断是否有这个文本，
如果有commad就可以点击，如果没有就显示灰色

我想用循环变量来控制commad
ok内容不固定，commad数量不固定
commad根据ok.txt内容多少自动变量

比如ok.txt第一行，
对应1.txt，可以设置
s=s+1
commad & s ，也就是commad1



Dim btn() As VB.CommandButton

Private Sub Form_Load()
    size = 0
End Sub

Private Sub Command1_Click()
    allfile = ""
    sbuf = ""
    size = 0

    Open App.Path & "\ok.txt" For Input As #1
    Do While Not EOF(1)
        Line Input #1, sbuf
        If Len(sbuf) = 0 Then Exit Do
        size = size + 1
        allfile = allfile & sbuf & ","
    Loop
    Close #1
    
    '根据读入条数更改数组大小
    size = size - 1
    ReDim btn(size) As VB.CommandButton
    
    sa = Split(allfile, ",")
    t = 50
    l = 0
    For i = 0 To size
        has = Dir(App.Path & "\" & sa(i)) <> ""
        Set btn(i) = Controls.Add("VB.CommandButton", "cmd" & i)
        If l = 10 Then
            t = t + 500
            l = 0
        End If
        
        With btn(i)
            
            .Enabled = has
            .Tag = sa(i)
            .Left = l * (.Width + 300)
            .Top = t
            .Caption = i + 1 & ":" & sa(i)
            .Visible = True
        End With
        l = l + 1
        
    Next i
    
End Sub

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