举例：
s = "ffffffffffff"
s2 = Replace(s, "hh", "a")
If s2 = s Then MsgBox "没有替换"
If s2 <> s Then MsgBox "有替换"
s = "ffffffffffff"
s2 = Replace(s, "f", "a")
If s2 = s Then MsgBox "没有替换"
If s2 <> s Then MsgBox "有替换"
方法很多。楼上就很好。
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