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用户代码未处理 System.Data.SqlClient.SqlException Message="

我加了 conn.Open();为什么还有错误？

2025-03-07 19:32:11

推荐回答（3个）

回答1：

SqlConnection.Open()方法表示打开你的sqlserver数据库连接，如果这里出错，一般是网络异常，无法连接到指定的sqlserver数据库服务器，或者是你把连接字符串，也就是SqlConnection.ConnectionString写错了，导致无法连接。请加上try……catch代码块，贴出具体的异常，再进行下一步判断。

回答2：

加个try{}catch

回答3：

sql 语句有错，把sql 语句放进数据库执行下看看

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