MVP 模式是否应该这样修改？
本事例灵感来源MVP 模式，使用客户资料编辑操作。
首先定义客户资料数据接口。
using System;
namespace HenXiao.WinUI
{
/*定义客户资料接口*/
public interface ICustomer
{
/// <summary>
/// 客户ID
/// </summary>
int CstId{get;set;}
/// <summary>
/// 客户编号
/// </summary>
string CstNo{get;set;}
/// <summary>
/// 客户名称
/// </summary>
string CstName{get;set;}
/// <summary>
/// 性别
/// </summary>
string CstSex { get;set;}
/// <summary>
/// 出生日期
/// </summary>
DateTime CstBirthday { get;set;}
/// <summary>
/// 证件类型
/// </summary>
string CstCertType { get;set;}
/// <summary>
/// 证件号码
/// </summary>
string CstCertNo { get;set;}
/// <summary>
/// 联系电话
/// </summary>
string CstTele{get;set;}
/// <summary>
/// 邮政编码
/// </summary>
string CstZip{get;set;}
/// <summary>
/// 电子邮箱
/// </summary>
string CstEmail { get;set;}
/// <summary>
/// 联系地址
/// </summary>
string CstAddr{get;set;}
/// <summary>
/// 工作单位
/// </summary>
string CstCompany { get;set;}
/// <summary>
///备注
/// </summary>
string CstExp{get;set;}
}
}
然后定义客户资料业务操作对象
using System;
using System.Data;
namespace HenXiao.WinUI
{
/// <summary>
/// 客户资料业务操作对象
/// </summary>
public class HxCustomerHelper
{
private ICustomer customer = null;
private HxDatabase hxDB = null;
private string errorMessage = string.Empty;
/// <summary>
/// 错误信息
/// </summary>
public string ErrorMessage
{
get { return this.errorMessage; }
}
public HxCustomerHelper(ICustomer cst)
{
this.customer = cst;
}
/// <summary>
/// 加载数据
/// </summary>
public void DataLoad()
{
hxDB = new HxDatabase();
try
{
hxDB.AddParam("@CstId",this.customer.CstId);
DataTable dtData = hxDB.ExecuteDataTable("Select * from Tab_Customer where CstId=@CstId");
if (dtData.Rows.Count > 0)
{
this.customer.CstNo = dtData.Rows[0]["CstNo"].ToString();
this.customer.CstName = dtData.Rows[0]["CstName"].ToString();
this.customer.CstSex = dtData.Rows[0]["CstSex"].ToString();
if (dtData.Rows[0]["CstBirthday"] != DBNull.Value)
this.customer.CstBirthday = Convert.ToDateTime(dtData.Rows[0]["CstBirthday"].ToString());
this.customer.CstCertType = dtData.Rows[0]["CstCertType"].ToString();
this.customer.CstCertNo = dtData.Rows[0]["CstCertNo"].ToString();
this.customer.CstTele = dtData.Rows[0]["CstTele"].ToString();
this.customer.CstZip = dtData.Rows[0]["CstZip"].ToString();
this.customer.CstAddr = dtData.Rows[0]["CstAddr"].ToString();
this.customer.CstCompany = dtData.Rows[0]["CstCompany"].ToString();
this.customer.CstExp = dtData.Rows[0]["CstExp"].ToString();
}
}
catch (Exception ex)
{
this.errorMessage = ex.Message;
}
finally
{
hxDB.Dispose();
}
}
/// <summary>
/// 数据验证
/// </summary>
/// <returns></returns>
private bool Validate()
{
if (string.IsNullOrEmpty(this.customer.CstNo))
{
this.errorMessage = "客户编号不能为空！";
return false;
}
if (string.IsNullOrEmpty(this.customer.CstName))
{
this.errorMessage = "客户名称不能为空！";
return false;
}
return true;
}
/// <summary>
/// 数据保存
/// </summary>
/// <returns></returns>
public bool Save()
{
if (this.Validate() == false)
return false;
else
{
hxDB = new HxDatabase();
try
{
hxDB.AddParam("@CstId", this.customer.CstId);
hxDB.AddParam("@CstNo", this.customer.CstNo);
object cstId = hxDB.ExecuteScalar("Select CstId from Tab_Customer where CstId<>@CstId and CstNo=@CstNo");
if(cstId != null
&& string.IsNullOrEmpty(cstId.ToString()) == false
&& Convert.ToInt32(cstId.ToString()) > 0)
{
this.errorMessage = "客户编号重复！";
return false;
}
hxDB.AddParam("@CstId", this.customer.CstId);
DataTable dtData = hxDB.ExecuteDataTable("Select * from Tab_Customer where CstId=@CstId");
DataRow dr = null;
if (dtData.Rows.Count > 0)
{
dr = dtData.Rows[0];
}
else
{
dr = dtData.NewRow();
dr["CstCreatedOn"] = DateTime.Now;
dtData.Rows.Add(cstId.ToString());
}
dtData.Rows[0]["CstNo"] = this.customer.CstNo;
dtData.Rows[0]["CstName"] = this.customer.CstName;
dtData.Rows[0]["CstSex"] = this.customer.CstSex;
if (this.customer.CstBirthday != DateTime.MinValue)
dtData.Rows[0]["CstBirthday"] = this.customer.CstBirthday;
dtData.Rows[0]["CstCertType"] = this.customer.CstCertType;
dtData.Rows[0]["CstCertNo"] = this.customer.CstCertNo;
dtData.Rows[0]["CstTele"] = this.customer.CstTele;
dtData.Rows[0]["CstZip"] =this.customer.CstZip;
dtData.Rows[0]["CstAddr"] =this.customer.CstAddr;
dtData.Rows[0]["CstCompany"] = this.customer.CstCompany;
dtData.Rows[0]["CstExp"] = this.customer.CstExp;
hxDB.Update(dtData,"tab_Customer");
return true;
}
catch (Exception ex)
{
this.errorMessage = ex.Message;
return false;
}
finally
{
hxDB.Dispose();
}
}
}
}
}