Convert.ToDateTime("08/07/01").CompareTo(Convert.ToDateTime(DateTime.Now.ToString("yy/MM/dd")))
//调用存储过程
string conn=连接数据库字符串
SqlParameter para = new SqlParameter("@name",SqlDbType.Char,10);
para.Direction = ParameterDirection.Input;
para.Value = 名字;
SqlParameter para2 = new SqlParameter("@pwd",SqlDbType.Char,10);
para.Direction = ParameterDirection.Input;
para.Value = 密码;
SqlParameter para = new SqlParameter("@ISValid",SqlDbType.Char,10);
para.Direction = ParameterDirection.ReturnValue;
SqlCommand myCommand=new SqlCommand("CheckPass",conn)
myCommand.CommandType=CommandType.StoredProcedure;
myCommand.Parameters.Add(para);
myCommand.Parameters.Add(para2);
myCommand.ExcuteNonQuery();
bool isvalid=myCommand.Parameters["@ISvalid"].value; //返回值
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