using System; using System.Data.SqlClient;
namespace MyNamespace { public class MyClass { public string ConnectionString { get; set; }
public void DoSomething()
{
try
{
using (SqlConnection connection = new SqlConnection(ConnectionString))
{
connection.Open();
// 数据库操作
}
}
catch (Exception ex)
{
Console.WriteLine("连接数据库失败:" + ex.Message);
// 处理异常
}
}
}
}