来自Web服务使用的DataSet XML响应

Question

Below is the valid and updated XML I was trying to consume:

<DataSet xmlns="http://tempuri.org/">
    <xs:schema xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" id="NewDataSet">
    <xs:element name="response">
    <xs:complexType>
    <xs:sequence>
    <xs:element name="user" minOccurs="0" maxOccurs="unbounded">
    <xs:complexType>
    <xs:attribute name="id" type="xs:string"/>
    </xs:complexType>
    </xs:element>
    <xs:element name="status" minOccurs="0" maxOccurs="unbounded">
    <xs:complexType>
    <xs:attribute name="code" type="xs:string"/>
    <xs:attribute name="value" type="xs:string"/>
    <xs:attribute name="description" type="xs:string"/>
    </xs:complexType>
    </xs:element>
    <xs:element name="error" minOccurs="0" maxOccurs="unbounded">
    <xs:complexType>
    <xs:attribute name="code" type="xs:string"/>
    <xs:attribute name="message" type="xs:string"/>
    </xs:complexType>
    </xs:element>
    </xs:sequence>
    <xs:attribute name="operation" type="xs:string"/>
    <xs:attribute name="timestamp" type="xs:string"/>
    </xs:complexType>
    </xs:element>
    <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
    <xs:complexType>
    <xs:choice minOccurs="0" maxOccurs="unbounded">
    <xs:element ref="response"/>
    </xs:choice>
    </xs:complexType>
    </xs:element>
    </xs:schema>
    <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
    <NewDataSet xmlns="">
    <response diffgr:id="response1" msdata:rowOrder="0" diffgr:hasChanges="inserted" operation="AUTHENTICATION" timestamp="2015-11-19 18:21:17.457" msdata:hiddenresponse_Id="0">
    <user diffgr:id="user1" msdata:rowOrder="0" diffgr:hasChanges="inserted" id="blumaesnetwork" msdata:hiddenresponse_Id="0"/>
    <status diffgr:id="status1" msdata:rowOrder="0" diffgr:hasChanges="inserted" code="315" value="FAILED" description="Authentication Failed. User ID Not Found" msdata:hiddenresponse_Id="0"/>
    <error diffgr:id="error1" msdata:rowOrder="0" diffgr:hasChanges="inserted" code="-1" message="User Not Found" msdata:hiddenresponse_Id="0"/>
    </response>
    </NewDataSet>
    </diffgr:diffgram>
    </DataSet>

With the C# code below:

x.LoadXml(_xmlString);

XDocument x1 = new XDocument();
x1 = XDocument.Parse(_xmlString);

IEnumerable<responseStatus> ListRsts = (from e in x1.Descendants("responseStatus")
                                        select new responseStatus
                                        {
                                           code = e.Element("code").Value,
                                           value = e.Element("value").Value,
                                           description = e.Element("description").Value
                                        });
foreach (var br in ListRsts)
         codeField = (br.code);

It keeps throwing error that i missed "diffgr".

Answer 1

What you get as a respsone XML is a saved DataSet . Instead of trying to decipher the diffgram it generates you better leverage the ReadXml method of that type. It is fully equipped to read the xml and gives you specified behavior on the Tables and Relationships .

var ds = new DataSet();
ds.ReadXml(File.Open(@"C:\temp\ds.xml", FileMode.Open));

var listOfStatus = from row in ds.Tables["response"].Rows.Cast<DataRow>()
       from status in row.GetChildRows("response_status")
       select new { code = status["code"], 
                    value = status["value"], 
                    description = status["description"] };

foreach(var stat in listOfStatus)
{
    // do what ever you need to do with the Status record(s)
}

In the above code I read the rows in the table response and then fetch the childrows for the table status. For every status row an anonymous type is created with the three fields you seem to be interested in. You can process those by iterating over the IEnumerable of that anonymous type.