string sqlstr2 = @"UPDATE CardLog SET Date=@Date,Time=@Time";
using (SqlConnection cn = new SqlConnection(DBAssist.ConnectionString))
{
SqlCommand cmd = cn.CreateCommand();
cmd.CommandText = sqlstr2;
cmd.Parameters.AddWithValue("@Date",DateTime.Now.ToLongDateString());
cmd.Parameters.AddWithValue("@Time",DateTime.Now.ToShortTimeString());
cn.Open();
cmd.ExecuteNonQuery();
}
然后就报错了,错误如题