ylbtech-funcation-util:  C# 复杂条件查询（sql 复杂条件查询）查询解决方案

 C# 复杂条件查询（sql 复杂条件查询）查询解决方案

1.A,Ylbtech.Model返回顶部
A.1,DepartmentInfo.cs

using System;
namespace Ylbtech.Model
{
    /// <summary>
    ///DepartmentInfo 的摘要说明
    ///desc: 部门表
    /// </summary>
    public class DepartmentInfo
    {
        /// <summary>
        /// 1，编号【PK】
        /// </summary>
        public int DepartmentId { get; set; }
        /// <summary>
        /// 部门名称
        /// </summary>
        public string DepartmentName { get; set; }

        public DepartmentInfo()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }
    }
}

View Code

 A.2,EmployeeInfo.cs

using System;

namespace Ylbtech.Model
{
    /// <summary>
    ///EmployeeInfo 的摘要说明
    ///desc:员工表
    /// </summary>
    public class EmployeeInfo : DepartmentInfo
    {
        /// <summary>
        /// 1,编号【PK】
        /// </summary>
        public int EmployeeId { get; set; }
        /// <summary>
        /// 身份证号
        /// </summary>
        public string Id { get; set; }
        /// <summary>
        /// 姓名
        /// </summary>
        public string Username { get; set; }
        /// <summary>
        /// 性别【C】男,女
        /// </summary>
        public string Sex { get; set; }
        /// <summary>
        /// 银行卡号
        /// </summary>
        public string CardNo { get; set; }

        /// <summary>
        /// ，6 受雇日期
        /// </summary>
        public string HireDate { get; set; }
        /// <summary>
        /// 部门编号【Fk】
        /// </summary>
        public int DepartmentId { get; set; }
        /// <summary>
        /// 状态（正式内、正式外、中心版）
        /// </summary>
        public string State { get; set; }
        /// <summary>
        /// 转正日期
        /// </summary>
        public string ToRegularDate { get; set; }
        /// <summary>
        /// 地址
        /// </summary>
        public string Address { get; set; }
        /// <summary>
        /// 自有/租住
        /// </summary>
        public string IsRent { get; set; }
        /// <summary>
        /// 电话
        /// </summary>
        public string TelNo { get; set; }


        /// <summary>
        /// FuJia:孩子的个数
        /// </summary>
        public int ChildrenNumber { get; set; }
        /// <summary>
        /// 儿童节发放金额
        /// </summary>
        public Decimal ChildrenMoney { get; set; }
        /// <summary>
        /// 序号
        /// </summary>
        public int SerialNumber { get; set; }
        /// <summary>
        /// 普通假日支付金额
        /// </summary>
        public Decimal PaymentAmount { get; set; }
        /// <summary>
        /// 奶粉费
        /// </summary>
        public Decimal NaiFenFei { get; set; }
        /// <summary>
        /// 医疗费用
        /// </summary>
        public Decimal YiLiaoFeiYong { get; set; }
        /// <summary>
        /// 合计
        /// </summary>
        public Decimal Total { get; set; }
        /// <summary>
        /// 文体费
        /// </summary> 
        public Decimal WenTiFei { get; set; }
        /// <summary>
        /// 健身费
        /// </summary>
        public Decimal JianShenFei { get; set; }
        /// <summary>
        /// 卫生费【只有女职工有】
        /// </summary>
        public Decimal WeiShengFei { get; set; }
        /// <summary>
        /// 家财
        /// </summary>
        public Decimal JiaCai { get; set; }
        /// <summary>
        /// 人身意外
        /// </summary>
        public Decimal RenShenYiWai { get; set; }
        /// <summary>
        /// 女性特种疾病
        /// </summary>
        public Decimal NvXingTeZhongJiBing { get; set; }
        /// <summary>
        /// 交通意外
        /// </summary>
        public Decimal JiaoTongYiWai { get; set; }
        public EmployeeInfo()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }
    }
}

View Code

1.B,Ylbtech.DAL返回顶部
 B.1,Employee.cs
using System;
using System.Collections.Generic;
using System.Linq;

using Ylbtech.Model;
using Microsoft.DBUtility;
using System.Text;
using System.Data.SqlClient;
using Ylbtech.Common;

namespace Ylbtech.DAL
{
    /// <summary>
    ///Employee 的摘要说明
    ///desc：员工操作类
    ///author:yuanbo
    ///date:2013-6-12
    /// </summary>
    public class Employee
    {
        /// <summary>
        /// ylb:查询员工信息
        /// </summary>
        /// <param name="dalEmployee"></param>
        /// <returns></returns>
        public static IList<EmployeeInfo> GetAllSearch(EmployeeInfo dalEmployee)
        {
            IList<EmployeeInfo> dals = new List<EmployeeInfo>();

            string sql = "select employeeId,[id],username,sex,cardNo"
                + ",hireDate,e.departmentId,state,ToRegularDate,d.departmentName from Employee e inner join Department d on e.departmentId=d.departmentId";

            StringBuilder sbSql = new StringBuilder();
            sbSql.Append(sql);


            IList<SqlParameter> sqlParamI = new List<SqlParameter>();

            if (dalEmployee.EmployeeId != 0)   /*单一查询条件*/
            {
                sqlParamI.Add(new SqlParameter("@employeeId", dalEmployee.EmployeeId));
                sbSql.Append(" where employeeId=@employeeId");
            }
            else if (dalEmployee.Id.Length > 0) /*单一查询条件*/
            {
                sqlParamI.Add(new SqlParameter("@id", dalEmployee.Id));
                sbSql.Append(" where [id]=@id");
            }
            else  /*复合条件查询*/
            {
                sbSql.Append(" where 1=1");
                if (dalEmployee.Username.Length > 0)
                {
                    sbSql.Append(" and username=@username");
                    sqlParamI.Add(new SqlParameter("@username", dalEmployee.Username));
                }
                if (dalEmployee.Sex != "-1")
                {
                    sbSql.Append(" and sex=@sex");
                    sqlParamI.Add(new SqlParameter("@sex", dalEmployee.Sex));
                }
                if (dalEmployee.CardNo.Length > 0)
                {
                    sbSql.Append(" and cardNo=@cardNo");
                    sqlParamI.Add(new SqlParameter("@cardNo", dalEmployee.CardNo));
                }
                DateTime hireDate;
                if (DateTime.TryParse(dalEmployee.HireDate, out hireDate))
                {
                    sbSql.Append(" and hiredate=@hiredate");
                    sqlParamI.Add(new SqlParameter("@hiredate", hireDate));
                }
                if (dalEmployee.DepartmentId != -1)
                {
                    sbSql.Append(" and e.departmentId=@departmentId");
                    sqlParamI.Add(new SqlParameter("@departmentId", dalEmployee.DepartmentId));
                }
                if (dalEmployee.State != "-1")
                {
                    sbSql.Append(" and state=@state");
                    sqlParamI.Add(new SqlParameter("@state", dalEmployee.State));
                }
                DateTime toRegularDate;
                if (DateTime.TryParse(dalEmployee.ToRegularDate, out toRegularDate))
                {
                    sbSql.Append(" and toRegularDate=@toRegularDate");
                    sqlParamI.Add(new SqlParameter("@toRegularDate", dalEmployee.ToRegularDate));
                }
            }
            sbSql.Append(" order by employeeId desc");

            SqlParameter[] sqlParam = new SqlParameter[sqlParamI.Count];

            //A：方式一
            //for (int i = 0; i < sqlParamI.Count; i++)
            //{
            //    sqlParam[i] = sqlParamI[i];
            //}
            //A:方式二
            sqlParam = sqlParamI.ToArray();


            using (SqlDataReader sdr = SqlHelper.ExecuteReader(SqlHelper.ConnStr_WelfareSystem, System.Data.CommandType.Text, sbSql.ToString(), sqlParam))
            {
                while (sdr.Read())
                {
                    EmployeeInfo dal = new EmployeeInfo()
                    {
                        EmployeeId = sdr.GetInt32(0),
                        Id = sdr[1] == System.DBNull.Value ? "" : sdr.GetString(1),
                        Username = sdr[2] == System.DBNull.Value ? "" : sdr.GetString(2),
                        Sex = sdr[3] == System.DBNull.Value ? "" : sdr.GetString(3),
                        CardNo = sdr[4] == System.DBNull.Value ? "" : sdr.GetString(4),

                        HireDate = DateTimeFun.DateTimeConvertToyyyy_MM_dd(sdr[5] == System.DBNull.Value ? "" : sdr.GetString(5)),
                        DepartmentId = sdr.GetInt32(6),
                        State = sdr[7] == System.DBNull.Value ? "" : sdr.GetString(7),
                        ToRegularDate = DateTimeFun.DateTimeConvertToyyyy_MM_dd(sdr[8] == System.DBNull.Value ? "" : sdr.GetString(8)),
                        DepartmentName = sdr[9] == System.DBNull.Value ? "" : sdr.GetString(9)
                    };

                    dals.Add(dal);

                }
            }
            return dals;
        }

        public Employee()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }
    }
}
1.C,Ylbtech.DBUtility返回顶部
 C.SqlHelper.cs [略]
1.D,Ylbtech.Common返回顶部
 D.1,DateTiemFun.cs
using System;

namespace Ylbtech.Common
{
    /// <summary>
    ///DateTimeFun 的摘要说明
    ///日期操作相关函数
    /// </summary>
    public class DateTimeFun
    {
        
        /// <summary>
        /// 1,判断字符串是否日期类型。如果是则转换为 yyyy-MM-dd，否则 赋值于 ""
        /// </summary>
        /// <param name="strDate"></param>
        /// <returns></returns>
        public static string DateTimeConvertToyyyy_MM_dd(string strDate)
        {
            string date = "";
            DateTime toRegularDate;
            if (DateTime.TryParse(strDate.Trim(), out toRegularDate))
            {
                date = toRegularDate.ToString("yyyy-MM-dd");
            }
            return date;
        }

        public DateTimeFun()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }
    }
}
1.E,Additional data返回顶部
 E.1,/App_Data

use master
go
-- =============================================
-- DatabaseName: WelfareSystem
-- remark: 福利发放系统
-- author: YuanBo
-- date: 09:51 2013-03-26
-- =============================================
IF EXISTS (SELECT * 
       FROM   master..sysdatabases 
       WHERE  name = N\'WelfareSystem\')
    DROP DATABASE WelfareSystem
GO

CREATE DATABASE WelfareSystem
GO
use WelfareSystem

go
-- =============================================
-- ylb:1,部门表
-- =============================================
create table Department
(
departmentId int primary key identity(100,1),    --编号【PK】
departmentName varchar(100)        --部门名称
)

go
-- =============================================
-- ylb:2,员工表
-- =============================================
create table Employee
(
employeeId int primary key identity(1001,1),    --编号【PK】
[id] varchar(18),        --身份证号
username varchar(40),    --姓名
sex varchar(5) check(sex=\'男\'or sex=\'女\'),--性别
cardNo varchar(22),    --银行卡号
hireDate datetime,        --受雇日期
departmentId int,        --部门编号
[state] varchar(8),        --员工性质（正式内，正式入，中心版）
toRegularDate varchar(20),    --转正日期
[address] varchar(200),        --地址
isRent varchar(20),            --自住/租房
telNo varchar(20)        --家庭电话
)

print\'福利发放系统创建成功！\'

View Code

warn 作者：ylbtech
出处：http://ylbtech.cnblogs.com/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。

版权声明：本文为ylbtech原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://www.cnblogs.com/ylbtech/p/3159867.html