Read Multiple XML Elements And Write To SQL In C#
Question
Below I have my XML that I am receiving from a web-service. I am really new with working with XML in C# but I am trying to read the <data_text> elements only when they are from a certain <form_id> . I want to iterate through all of the XML to write to SQL what was sent. Is there an easy way to set this up so I can find the <data_text> say from a specific <field_number> and assign it to a String, then use that String to write to SQL? Once I can get everything into a String I can easily write to SQL but I cannot get the XML into Strings. I am open to other options as well. At the bottom I have the current C# of where I am so far with this.
<?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>
Some 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.
}
}
2 answers
solution1
0 2017-02-21 16:01:47
static void Main(string[] args)
{
var 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>";
XmlDocument xmldoc = new XmlDocument();
xmldoc.PreserveWhitespace = false;
Regex regex = new Regex(@"^\s+$[\r\n]*");
//String cleanedXml = regex.Replace(xml(URL, prefix, "POST"), "><").TrimStart();
xmldoc.LoadXml(xml);
// var list = from ws in doc.Descendants("formdata").ToList() ;
TextReader tr = new StringReader(xml);
XDocument doc = XDocument.Load(tr);
var list = (from root in doc.Descendants("imessage")
select new
{
p = root.Element("vehicle_number") != null ? root.Element("vehicle_number").Value : string.Empty ,
formdata= (from fdata in root.Descendants("formdata")
select new { x= fdata.Element("form_id") != null ? fdata.Element("form_id").Value : string.Empty , }
).ToList()
}
).ToList();
Console.ReadLine();
}
solution2
0 ACCPTED 2017-02-21 17:00:05
alternatively, you have have your c# send the xml to a sql server stored procedure...and allow the stored procedure to shred the data into a @holder table............and do your CUD ( create, update, delete) operations from that @holder table.
like so: (the stored procedure create is not shown, just the relevant tsql code)
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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