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SQl XmlºÍC# XmlÊý¾ÝµÄÒ»µã²Ù×÷×ܽá
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CREATE TABLE [dbo].[TestXml](
 [ID] [bigint] IDENTITY(1,1) NOT NULL,
 [Message] [xml] NULL,
 CONSTRAINT [PK_TestXml] PRIMARY KEY CLUSTERED
(
 [ID] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
2.´´½¨ÏàÓ¦µÄDataSet
×¢ÒâĬÈÏMessageÊÇStringÀàÐÍ£¬Îª´ËÎÒÃÇÒª°ÑËü¸ÄΪXDocument»òÔòXmlDocument£¬È磺
 [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
            public XDocument Message {
                get {
                    try {
                        string xmlstr=  ((string)(this[this.tableTestXml.MessageColumn]));
                       return  XDocument.Parse(xmlstr);
                    }
                    catch (global::System.InvalidCastException e) {
                        throw new global::System.Data.StrongTypingException("±í“TestXml”ÖÐÁГMessage”µÄֵΪ DBNull¡£", e);
                    }
      


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    public List<FirmAttachmentModel> LoadFirmAttachmentByFirmId(int FirmId, int pageIndex, int pageSize)
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