不通过SPS对象模型更改文档扩展字段的方法

        在SPS的对象模型中提供了方法修改扩展字段内容的方法，可是用这种方法修改
扩展字段会产生文档版本。可以用以下的方法直接去修改SPS数据库字段。
代码如下：
1、SpsExpendFieldData 类
namespace UltraPower.SPS.DB
{
 /// <summary>
 /// 每个扩展字段的属性信息，此类属于纯数据类不存在任何操作
 /// </summary>
 public class SpsExpendFieldData
 {
  #region 域
  private string m_ColsName;
  private string m_DataType;
  private string m_Name;
  private int m_Size;
  #endregion
  #region 属性
  /// <summary>
  /// 扩展字段在SPS数据库中对应的名称
  /// </summary>
  public string ColsName
  {
   get
   {
    /*Begin Template Expansion{63A03D96-E292-4D92-805C-0C2D134BC8F9}*/
    return m_ColsName;   
    /*End Template Expansion{63A03D96-E292-4D92-805C-0C2D134BC8F9}*/
   }
   set
   {
    /*Begin Template Expansion{EBA66CF2-6644-41AF-B8C7-F85E292F4041}*/
    m_ColsName = value;   
    /*End Template Expansion{EBA66CF2-6644-41AF-B8C7-F85E292F4041}*/
   }
  }
  /// <summary>
  /// 数据类型
  /// </summary>
  public string DataType
  {
   get
   {
    /*Begin Template Expansion{88374051-9EC0-4D85-BABC-630A275F2F93}*/
    return m_DataType;   
    /*End Template Expansion{88374051-9EC0-4D85-BABC-630A275F2F93}*/
   }
   set
   {
    /*Begin Template Expansion{5FCBBB45-9E62-495D-AE1E-A485DE07B436}*/
    m_DataType = value;   
    /*End Template Expansion{5FCBBB45-9E62-495D-AE1E-A485DE07B436}*/
   }
  }
  /// <summary>
  /// 扩展字段的名称
  /// </summary>
  public string Name
  {
   get
   {
    /*Begin Template Expansion{CFEAAA3E-1597-4048-BF7B-14BE1B9BD033}*/
    return m_Name;   
    /*End Template Expansion{CFEAAA3E-1597-4048-BF7B-14BE1B9BD033}*/
   }
   set
   {
    /*Begin Template Expansion{F9F30932-0F45-4D80-AD1D-1F280051431D}*/
    m_Name = value;   
    /*End Template Expansion{F9F30932-0F45-4D80-AD1D-1F280051431D}*/
   }
  }
  /// <summary>
  /// 数据长度
  /// </summary>
  public int Size
  {
   get
   {
    /*Begin Template Expansion{F4243132-8D17-40B0-ABD0-6DC416AF20D0}*/
    return m_Size;   
    /*End Template Expansion{F4243132-8D17-40B0-ABD0-6DC416AF20D0}*/
   }
   set
   {
    /*Begin Template Expansion{8C930AE2-2151-4CE6-8397-9B157CD0B0EB}*/
    m_Size = value;   
    /*End Template Expansion{8C930AE2-2151-4CE6-8397-9B157CD0B0EB}*/
   }
  }
  #endregion
  #region 构造器
  private SpsExpendFieldData()
  {
  }
  #endregion
  #region 方法
  /// <summary>
  /// 静态方法返回一个当前类的实例
  /// </summary>
  public static SpsExpendFieldData Create(string name, string colsName, int size, string dataType)
  {
   SpsExpendFieldData obj = new SpsExpendFieldData();
   obj.Name = name;
   obj.ColsName = colsName;
   obj.Size = size;
   obj.DataType = dataType;
   return obj;
  }
  public static SpsExpendFieldData Create(string name, string colsName, int size)
  {
   return Create(name,colsName,size,null);
  }
  public static SpsExpendFieldData Create(string name, string colsName)
  {
   return Create(name,colsName,0,null);
  }
  #endregion

 }
}
2、SpsExpendFields类
using System;
using System.Data;
using System.Xml;
using System.Xml.XPath;
using System.Collections;
using UltraPower.DB.SqlClient.DataAccess;
namespace UltraPower.SPS.DB
{
 /// <summary>
 /// 直接在SPS文档库中修改扩展字段值
 /// </summary>
 public class SpsExpendFields
 {
  #region 域
  private string m_DBConnStr;
  private string m_DocLibGuid;
  private string m_FieldStr;
  private DataBase m_DB;
  private ArrayList m_ExpendFieldsNameValueList;
  #endregion

  #region 属性
  /// <summary>
  /// SPS文挡库数据库连接字符串
  /// </summary>
  public string DBConnStr
  {
   get
   {
    /*Begin Template Expansion{8BD87766-C6FF-4504-B59F-2B41DFC62C61}*/
    return m_DBConnStr;   
    /*End Template Expansion{8BD87766-C6FF-4504-B59F-2B41DFC62C61}*/
   }
   set
   {
    /*Begin Template Expansion{E4B4BE05-2005-4089-96AB-32A3F08A7D78}*/
    m_DBConnStr = value;   
    /*End Template Expansion{E4B4BE05-2005-4089-96AB-32A3F08A7D78}*/
   }
  }
  public string DocLibGuid
  {
   get
   {
    /*Begin Template Expansion{7797A678-53AC-4260-A590-9ACB53328CB4}*/
    return m_DocLibGuid;   
    /*End Template Expansion{7797A678-53AC-4260-A590-9ACB53328CB4}*/
   }
   set
   {
    /*Begin Template Expansion{F9649A26-B95E-476E-82D0-736EE7F19EA4}*/
    m_DocLibGuid = value;   
    /*End Template Expansion{F9649A26-B95E-476E-82D0-736EE7F19EA4}*/
   }
  }
  public string FieldStr
  {
   get
   {
    if (m_FieldStr != null)
        return m_FieldStr;
    else
     return "";
   }
  }
  public DataBase DB
  {
   get
   {
    if (m_DB == null)
    {
     m_DB = new DataBase(DBConnStr);
    }
    return m_DB;
   }
  }
  public ArrayList ExpendFieldsNameValueList
  {
   get
   {
    if (m_ExpendFieldsNameValueList == null)
    {
     GetFieldStr();
     m_ExpendFieldsNameValueList = GetFieldInfo();
    }
    return m_ExpendFieldsNameValueList;
   }
  }
  #endregion
  #region 构造函数
  public SpsExpendFields()
  {
  }
  public SpsExpendFields(string dbConnStr)
  {
   DBConnStr = dbConnStr;
  }
  public SpsExpendFields(string dbConnStr,string docLibGuid)
  {
   DBConnStr = dbConnStr;
   DocLibGuid = docLibGuid;
  }
  #endregion
  #region 私有方法
  private string GetFieldStr()
  {
   string strSQL = "SELECT Tp_Fields FROM Lists WHERE Tp_ID = '" + DocLibGuid + "'";
   m_FieldStr = DB.ReturnValue(strSQL);
   return FieldStr;
  }
  /// <summary>
  /// 得到扩展字段的属性信息
  /// </summary>
  private ArrayList GetFieldInfo()
  {
   try
   {
    ArrayList result = new ArrayList();
    GetFieldStr();
    XmlDocument xd = new XmlDocument();
    xd.LoadXml("<myroot>" + FieldStr + "</myroot>");
    XPathNavigator xpn = xd.CreateNavigator();
    XPathNodeIterator ni = xpn.Select("/myroot/Field");
    while (ni.MoveNext())
    {
     SpsExpendFieldData objFieldData = SpsExpendFieldData.Create(ni.Current.GetAttribute("Name",""),
      ni.Current.GetAttribute("ColName",""),
      0,
      ni.Current.GetAttribute("Type",""));
     result.Add(objFieldData);
    }
    return result;
   }
   catch(Exception e)
   {
    throw e;
   }
  }
  #endregion
        #region 公共方法
  /// <summary>
  /// 根据扩展字段的名称得到Sps数据库中实际的字段名
  /// </summary>
  /// <param name="fieldName"></param>
  /// <returns></returns>
  public string GetDBFieldName(string fieldName)
  {
   string result = "";
   IEnumerator obj = ExpendFieldsNameValueList.GetEnumerator();
   while(obj.MoveNext())
   {
    if (((SpsExpendFieldData)obj.Current).Name.Equals(fieldName))
    {
     result = ((SpsExpendFieldData)obj.Current).ColsName;
    }
   }
   return result;
  }
  /// <summary>
  /// 根据扩展字段的名称得到SpsExpendFieldData对象（包含扩展字段的信息）
  /// </summary>
  /// <param name="fieldName"></param>
  /// <returns></returns>
  public SpsExpendFieldData GetExpendFieldData(string fieldName)
  {
   SpsExpendFieldData result = null;
   IEnumerator obj = ExpendFieldsNameValueList.GetEnumerator();
   while(obj.MoveNext())
   {
    if (((SpsExpendFieldData)obj.Current).Name.Equals(fieldName))
    {
     result = (SpsExpendFieldData)obj.Current;
    }

   }
   return result;
  }
  #endregion

 }
}

3、SpsExpendFieldsModify 类
using System.Data;
using System.Collections;
using System.Text;
using UltraPower.DB.SqlClient.DataAccess;
namespace UltraPower.SPS.DB
{
 /// <summary>
 /// 修改扩展字段内容
 /// </summary>
 public class SpsExpendFieldsModify
 {
  #region 域
  private string m_DBConnStr;
  private string m_DocLibGuid;
  private DataBase m_DB;
  #endregion

  #region 属性
  /// <summary>
  /// SPS数据库连接字符串
  /// </summary>
  public string DBConnStr
  {
   get
   {
    return m_DBConnStr;
   }
   set
   {
    m_DBConnStr = value;
   }
  }
  public string DocLibGuid
  {
   get
   {
    return m_DocLibGuid;
   }
   set
   {
    m_DocLibGuid = value;
   }
  }
  public DataBase DB
  {
   get
   {
    if (m_DB == null)
    {
     m_DB = new DataBase(DBConnStr);
    }
    return m_DB;
   }
  }
  #endregion
  #region 构造器
  public SpsExpendFieldsModify(string dbConnStr,string docLibGuid)
  {
   DBConnStr = dbConnStr;
   DocLibGuid = docLibGuid;
  }
  public SpsExpendFieldsModify()
  {
  }
  #endregion

  #region 私有方法
  /// <summary>
  /// 生成更新扩展字段的Sql语句
  /// </summary>
  /// <param name="docID"></param>
  /// <param name="updateData"></param>
  /// <returns></returns>
  private string CreateUpdateSql(int docID, Hashtable updateData)
  {
   SpsExpendFields objExpendFields = new SpsExpendFields(DBConnStr,DocLibGuid);
   StringBuilder result = new StringBuilder();
   
   result.Append("Update UserData Set Tp_ID = Tp_ID");
   if (updateData.Count > 0)
   {
    IDictionaryEnumerator obj = updateData.GetEnumerator();
    while(obj.MoveNext())
    {
     if (objExpendFields.GetDBFieldName(obj.Key.ToString()).IndexOf("nvarchar")==-1)
     {
      result.Append( "," + objExpendFields.GetDBFieldName(obj.Key.ToString()) + " = '" + obj.Value.ToString()+"'");
     }
     else
     {
      result.Append( "," + objExpendFields.GetDBFieldName(obj.Key.ToString()) + " = N'" + obj.Value.ToString()+"'");
     }
    }
    result.Append(" Where Tp_ID = " + docID.ToString() + " And Tp_ListID = '" + DocLibGuid + "'");
   }
   return result.ToString();
  }
  #endregion

  #region 公共方法
  /// <summary>
  /// 执行更新扩展字段的操作
  /// </summary>
  /// <param name="docID"></param>
  /// <param name="updateData"></param>
  /// <returns></returns>
  public bool Update(int docID,Hashtable updateData)
  {
   try
   {
    DB.RunProc(CreateUpdateSql(docID,updateData));
    return true;
   }
   catch
   {
    return false;
   }
  }
  #endregion

 }
}

使用示例：

   SpsExpendFieldsModify obj = new SpsExpendFieldsModify();
   //要操作文档库的GUID
   obj.DocLibGuid = "b1dd10ae-f9c0-494d-8296-182c82762b85"; 
   //要操作文档库的数据库联接字符串
   obj.DBConnStr = "Data Source=10.1.30.44;User Id=sa;Password=**;Initial Catalog=DEVSps1_Site;";
   System.Collections.Hashtable expendFields = new Hashtable();
   
   expendFields .Add("expendfield1","11");
   expendFields .Add("expendfield2","dafsdfasdf1");
   expendFields .Add("expendfield3","4");
   obj.Update(3,expendFields );