读取多个XML元素并在C＃中写入SQL

时间：2017-02-21 15:07:31

标签： c# sql sql-server xml

下面我收到了我从网络服务收到的XML。我真的很擅长在C＃中使用XML，但我只是在它们来自某个<data_text>时尝试阅读<form_id>元素。我想迭代所有的XML来写SQL发送的内容。有没有一种简单的方法来设置它，所以我可以从特定的<data_text>找到<field_number>说并将其分配给一个字符串，然后使用该字符串写入SQL？一旦我可以将所有内容都放入String中，我就可以轻松地写入SQL但我无法将XML转换为字符串。我也对其他选择持开放态度。在底部，我有目前的C＃，我到目前为止。

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE pnet_message_history_packet_response PUBLIC>
<pnet_message_history_packet_response>
    <packet_id>2</packet_id>
    <imessage>
        <vehicle_number>Test1</vehicle_number>
        <created_datetime>02/20/2017 19:33:28</created_datetime>
        <received_datetime>02/20/2017 19:33:53</received_datetime>
        <recipient>
            <recip_uid>1234</recip_uid>
            <recip_name>TestRecip</recip_name>
        </recipient>
        <msn>1233</msn>
        <base_msn>1234</base_msn>
        <message_type>form</message_type>
        <formdata>
            <form_id>55555</form_id>
            <im_field>
                <field_number>5</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test5</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>6</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test6</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>7</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test7</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>8</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/09/09 09:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>9</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/09/09 09:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>10</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test10</data_text>
                </data>
            </im_field>
        </formdata>
    </imessage>
    <imessage>
        <vehicle_number>Test1</vehicle_number>
        <created_datetime>02/20/2017 19:34:04</created_datetime>
        <received_datetime>02/20/2017 19:34:19</received_datetime>
        <recipient>
            <recip_uid>1234</recip_uid>
            <recip_name>TestRecip</recip_name>
        </recipient>
        <msn>1235</msn>
        <base_msn>1236</base_msn>
        <message_type>form</message_type>
        <formdata>
            <form_id>55555</form_id>
            <im_field>
                <field_number>5</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test52</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>6</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test62</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>7</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test72</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>8</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/08/09 09:08:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>9</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/08/09 08:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>10</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test102</data_text>
                </data>
            </im_field>
        </formdata>
    </imessage>
</pnet_message_history_packet_response>

一些C＃-code 

protected void GetMessages()
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.PreserveWhitespace = false;

            Regex regex = new Regex(@"^\s+$[\r\n]*");
            String cleanedXml = regex.Replace(postXMLData(URL, prefix, "POST"), "><").TrimStart();
            xmldoc.LoadXml(cleanedXml);

            XmlNodeList messageList = xmldoc.GetElementsByTagName("imessage");

            foreach (XmlNode node in messageList)
            {
                XmlElement messageElement = (XmlElement)node;
                String Arrival;

                Arrival = messageElement.GetElementsByTagName("data_text")[0].InnerText;

                testTxtBx.Text += Arrival; //I am just trying to write to a Textbox now to see the results.
            }
        }

1 个答案:

答案 0 :(得分：0)

或者，您已将c＃发送到sql server存储过程...并允许存储过程将数据分解为@holder表............并执行从那个@holder表中进行CUD（创建，更新，删除）操作。

像这样:(没有显示存储过程创建，只显示相关的tsql代码）

declare @xml xml

select @xml =
'


<pnet_message_history_packet_response>
    <packet_id>2</packet_id>
    <imessage>
        <vehicle_number>Test1</vehicle_number>
        <created_datetime>02/20/2017 19:33:28</created_datetime>
        <received_datetime>02/20/2017 19:33:53</received_datetime>
        <recipient>
            <recip_uid>1234</recip_uid>
            <recip_name>TestRecip</recip_name>
        </recipient>
        <msn>1233</msn>
        <base_msn>1234</base_msn>
        <message_type>form</message_type>
        <formdata>
            <form_id>55555</form_id>
            <im_field>
                <field_number>5</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test5</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>6</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test6</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>7</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test7</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>8</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/09/09 09:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>9</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/09/09 09:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>10</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test10</data_text>
                </data>
            </im_field>
        </formdata>
    </imessage>
    <imessage>
        <vehicle_number>Test1</vehicle_number>
        <created_datetime>02/20/2017 19:34:04</created_datetime>
        <received_datetime>02/20/2017 19:34:19</received_datetime>
        <recipient>
            <recip_uid>1234</recip_uid>
            <recip_name>TestRecip</recip_name>
        </recipient>
        <msn>1235</msn>
        <base_msn>1236</base_msn>
        <message_type>form</message_type>
        <formdata>
            <form_id>55555</form_id>
            <im_field>
                <field_number>5</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test52</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>6</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test62</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>7</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_text>Test72</data_text>
                </data>
            </im_field>
            <im_field>
                <field_number>8</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/08/09 09:08:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>9</field_number>
                <empty_at_start>yes</empty_at_start>
                <driver_modified>yes</driver_modified>
                <data>
                    <data_date-time>09/08/09 08:09:00</data_date-time>
                </data>
            </im_field>
            <im_field>
                <field_number>10</field_number>
                <empty_at_start>no</empty_at_start>
                <driver_modified>no</driver_modified>
                <data>
                    <data_text>Test102</data_text>
                </data>
            </im_field>
        </formdata>
    </imessage>
</pnet_message_history_packet_response>


'


declare @holder table ( FormId int, DataText varchar(64) )

insert into @holder (FormId, DataText)


SELECT 
     T.MyEntity.value('../../form_id[1]', 'INT') AS ProgramId
    ,T.MyEntity.value('data_text[1]', 'VARCHAR(256)') AS SharedAccessKeyName
FROM @xml.nodes('pnet_message_history_packet_response/imessage/formdata/im_field/data') AS T(MyEntity);


select * from @holder
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