.net 当 实体类de构造函数 参数个数相同和类型相同，怎么解决？急急急
.net 当我的实体类 构造函数 个数相同，类型相同，但是我传入的参数是不同的，我知道这个情况是不能让构造函数重载的。那么我应该怎么实现这个方法呢？

代码如下

外借表实体类

C# code

/*  *  作者：  *  创建时间：2012/3/19 18:32:11 *  类说明：借出表实体类 *//// <summary>/// 借出表实体类/// </summary>public class LendInfo{    private string lendId;    /// <summary>    /// 借出id    /// </summary>    public string LendId    {        get { return lendId; }        set { lendId = value; }    }    private string deviceId;    /// <summary>    /// 设备id    /// </summary>    public string DeviceId    {        get { return deviceId; }        set { deviceId = value; }    }    private string lendPreson;    /// <summary>    /// 借出人    /// </summary>    public string LendPreson    {        get { return lendPreson; }        set { lendPreson = value; }    }    private string lendPresonPhone;    /// <summary>    /// 借出人联系电话    /// </summary>    public string LendPresonPhone    {        get { return lendPresonPhone; }        set { lendPresonPhone = value; }    }    private string lendDate;    /// <summary>    /// 借出日期    /// </summary>    public string LendDate    {        get { return lendDate; }        set { lendDate = value; }    }    private string lendDays;    /// <summary>    /// 借出天数    /// </summary>    public string LendDays    {        get { return lendDays; }        set { lendDays = value; }    }    private string returnDate;    /// <summary>    /// 归还日期    /// </summary>    public string ReturnDate    {        get { return returnDate; }        set { returnDate = value; }    }    private string isReturn;    /// <summary>    /// 是否归还    /// </summary>    public string IsReturn    {        get { return isReturn; }        set { isReturn = value; }    }    private string state;    /// <summary>    /// 审核状态    /// </summary>    public string State    {        get { return state; }        set { state = value; }    }    private string applyPreson;    public string ApplyPreson    {        get { return applyPreson; }        set { applyPreson = value; }    }    private string checkDate;    public string CheckDate    {        get { return checkDate; }        set { checkDate = value; }    }    private string checkPreson;    public string CheckPreson    {        get { return checkPreson; }        set { checkPreson = value; }    }    public LendInfo() { }    //第一个构造方法    public LendInfo(string lendId, string deviceId, string lendPreson, string lendPresonPhone,        string lendDate, string lendDays, string returnDate, string isReturn, string state, string applyPreson,        string checkDate, string checkPreson)    {        this.lendId = lendId;        this.deviceId = deviceId;        this.lendPreson = lendPreson;        this.lendPresonPhone = lendPresonPhone;        this.lendDate = lendDate;        this.lendDays = lendDays;        this.returnDate = returnDate;        this.isReturn = isReturn;        this.state = state;        this.applyPreson = applyPreson;        this.checkDate = checkDate;        this.checkPreson = checkPreson;    }        /// <summary>    /// 申请添加信息 (第二个构造方法）    /// </summary>    /// <param name="deviceId"></param>    /// <param name="lendPreson"></param>    /// <param name="lendPresonPhone"></param>    /// <param name="lendDate"></param>    /// <param name="lendDays"></param>    /// <param name="applyPreson"></param>    public LendInfo(string deviceId, string lendPreson, string lendPresonPhone,        string lendDate, string lendDays, string applyPreson)    {        this.deviceId = deviceId;        this.lendPreson = lendPreson;        this.lendPresonPhone = lendPresonPhone;        this.lendDate = lendDate;        this.LendDays = lendDays;        this.applyPreson = applyPreson;        }    /// <summary>    /// 更新已经申请，还没有审核的信息(第三个构造方法)    /// </summary>    /// <param name="lendPreson"></param>    /// <param name="lendId"></param>    /// <param name="lendPresonPhone"></param>    /// <param name="lendDate"></param>    /// <param name="lendDays"></param>    /// <param name="applyPreson"></param>    public LendInfo(  string lendId ,string lendPreson,string lendPresonPhone,        string lendDate, string lendDays, string applyPreson)    {              this.lendPreson = lendPreson;        this.lendId = lendId;        this.lendPresonPhone = lendPresonPhone;        this.lendDate = lendDate;        this.LendDays = lendDays;        this.applyPreson = applyPreson;    }} 
 

DAO里面调用的方法如下

C# code

/// <summary>    /// 修改外借信息（输入错误要更改，在审核之前都可以更改）    /// </summary>    /// <param name="le"></param>    /// <returns></returns>      #region 修改外借信息，在审核之前      public DataTable LendUpdateWrong(LendInfo le)      {          DataTable dt=new DataTable();          SqlParameter[] paras=new SqlParameter[]{              new SqlParameter("@lendPreson",le.LendPreson),               new SqlParameter("@lendId",le.LendId),                new SqlParameter("@lendPresonPhone",le.LendPresonPhone),               new SqlParameter("@lendDate",le.LendDate),               new SqlParameter("@lendDays",le.LendDays),               new SqlParameter("@applyPreson",le.ApplyPreson)           };          string cmdText="Lend_UpdateWrong";          dt=sqlhelper.ExecuteQuery(cmdText,paras,CommandType.StoredProcedure)          return dt;            }     

[解决办法]
/// <summary>
/// 更新已经申请，还没有审核的信息(第三个构造方法)
/// </summary>
/// <param name="lendPreson"></param>
/// <param name="lendId"></param>
/// <param name="lendPresonPhone"></param>
/// <param name="lendDate"></param>
/// <param name="lendDays"></param>
/// <param name="applyPreson"></param>
public static LendInfo GetLendInfo( string lendId ,string lendPreson,string lendPresonPhone,
string lendDate, string lendDays, string applyPreson)
{
LendInfo info = new LendInfo();
info.lendPreson = lendPreson;
info.lendId = lendId;
info.lendPresonPhone = lendPresonPhone;
info.lendDate = lendDate;
info.LendDays = lendDays;
info.applyPreson = applyPreson;
return info;
}