在Visual Basic中，我一直得到String To double Error

Question

我正在尝试在我的咖啡店程序中添加长度检查…我已经整理了一些，但我不知道我错在哪里。

Dim Name As String
MsgBox("Welcome. You Are On The 'Hot Mornings' Self-Ordering Service", vbInformation, "Welcome To Hot Mornings!")
        Name = InputBox("Please Enter Your Name", "Welcome To Hot Mornings!", ,     MsgBoxStyle.OkCancel)
If Len(Name <= 3) Then
        Do Until Len(Name > 3)
            MsgBox("Error!", vbExclamation, MsgBoxStyle.OkOnly)
            MsgBox("An Error Occureed Earlier. We Are Currently Trying To fix This     Issue.", vbInformation, "Error!")
            Name = InputBox("Please Enter Your Name.", , "Must Contain More Than 3     Characters", MsgBoxStyle.OkCancel)
        Loop
    End If

Answer 1

Len(Name <= 3) 

这段代码没有任何意义

您正在检查Name(字符串)是否小于或等于3(嗯?)，然后获得该检查结果的Len()。(嗯?)

您可能想要获得字符串(Len(Name))的Len()，然后检查其结果(这是一个数字)是否小于或等于3。