ASP.Net 删除xml文件中的数据(delete操作)

XML文件请见 ASP.Net中实现XMl的标识列(ID列)或自增长列
代码如下:
删除按钮事件:

  private   void  Btn_Delete_Click( object  sender, System.EventArgs e)
         {
             string uid = Session["uid"]//取得主键;
                string [] values = {uid};
                OperateXmlByDataSet.DeleteXmlRows(ViewState["filename"].ToString(),"userid",values);        }

OperateXmlByDataSet的DeleteXmlRow方法:

  DeleteXmlRows #region DeleteXmlRows
        /**//// 

        /// 删除strColumn列中值为ColumnValue的行
        /// 

        /// xml相对路径
        /// 列名
        /// strColumn列中值为ColumnValue的行均会被删除
        /// 
        public static bool DeleteXmlRows(string strXmlPath,string strColumn,string[] ColumnValue)
        {
            try
            {
                DataSet ds = new DataSet();
                ds.ReadXml(GetXmlFullPath(strXmlPath));

                //先判断行数
                if(ds.Tables[0].Rows.Count > 0)
                {
                    //判断行多还是删除的值多，多的for循环放在里面
                    if(ColumnValue.Length > ds.Tables[0].Rows.Count)
                    {
                        for(int i=0; i < ds.Tables[0].Rows.Count; i++)
                        {                            
                            for(int j=0; j < ColumnValue.Length; j++)
                            {                        
                                if(ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j]))
                                {
                                    ds.Tables[0].Rows[i].Delete();
                                }
                            }
                        }
                    }
                    else
                    {
                        for(int j=0; j < ColumnValue.Length; j++)
                        {                            
                            for(int i=0; i < ds.Tables[0].Rows.Count; i++)
                            {                                    
                                if(ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j]))
                                {
                                    ds.Tables[0].Rows[i].Delete();
                                }
                            }
                        }                        
                    }        
                    ds.WriteXml(GetXmlFullPath(strXmlPath));
                }                
                return true;        
            }
            catch(Exception e)
            {
                string ex = e.Message;
                return false;
            }            
        }
        #endregion