werwerwe <?内容?> dgdgdfg
sdfsdfsdf
dsdfsdf
sdfsdfsdf <?内容?>
sdsfdsdf '
sdfsdfsd
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怎样将内容替换成指定内容，谢谢！
------解决方案--------------------------------------------------------
<\?(.*?)\?>
------解决方案--------------------------------------------------------
System.Text.RegularExpressions.Regex.Replace( "原来字符串 ", @ " <\?.*\?> ", "替换的内容 ");