MID函数的主要作用是截取指定数量字符,它是Visual Basic和Microsoft Excel中的一个字符串函数。
语法
VB中Mid(String As Variant, Start As Long, [Length As Variant]) As VariantMid$(String As String, Start As Long, [Length As Variant]) As String
Excel中MID(text, start_num, num_chars)
说明这个函数的3个参数各在VB和Excel中互相等价,但VB中的Length参数可以省略,而Excel中num_chars参数不可省略。