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      VB.net 2010 視頻教程 VB.net 2010 視頻教程 VB.net 2010 視頻教程
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      • ASP.net教程之字符串格式化

      • 2019-06-11 20:39 來源:未知

      之前寫SQL語句 都是  string sql="select * from [表名] whereID="+id,可能會因為少敲一個引號而報錯。

      使用字符串格式化以后 SQL語句 可寫為 string  sql=$"select * from [表名] where ID={id}".

      防止SQL語句因為一個小小的錯誤,進行多次不必要的返工。

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