system代码处理

处理异常时，System.out.println代码表示什么意思呢？

System.Data.SqlClient.SqlException”，但未在用户代码中处理附加信息

当我尝试从asp.net中的Visual Studio C＃将SQL Server数据更新为大写时，出现此错误：System.Data.dll中发生“System.Data.SqlClient.SqlException”，但未在用户代码中处理附加信息：“，”附近的语法不正确码 String applicantSql=...

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