I am writing a program that calls an API, receives XML and displays the tracking aswell as opening a web browser with tracking info in. I have a problem, if the wrong tracking id is entered the nodes return null and the string will be null, how can I display an error rather than throwing a null ref exception?
//ONLINE PORTAL TRACKING
string ConNo = Con.Text;
XmlDocument doc1 = new XmlDocument();
doc1.Load(url1 + ConNo + url2 + APIKEY);
XmlElement root = doc1.DocumentElement;
XmlNodeList nodes = root.SelectNodes("/Response/Detail/Data");
foreach (XmlNode node in nodes)
{
string ConsignmentNumber = node["ConNo"].InnerText;
string tracking_url = node["tracking_url"].InnerText;
string Lifts = node["Lifts"].InnerText;
string TrackingID = node["TrackingID"].InnerText;
string JobStatus = node["Status"].InnerText;
string Barcodes = node["Barcodes"].InnerText;
string Weight = node["Weight"].InnerText;
string DateMan = node["DateEntered"].InnerText;
this.ConsignmentNumber.Text = ConsignmentNumber;
this.Lifts.Text = Lifts;
// this.TrackingURL.Text = tracking_url;
this.TrackingID.Text = TrackingID;
this.JobStatus.Text = JobStatus;
this.Barcodes.Text = Barcodes;
this.Weight.Text = Weight;
this.DelMan.Text = DateMan;
System.Diagnostics.Process.Start(PortalURL1 + TrackingID);
You can try to get some information in the XML response in case of error. Something like this:
XmlNodeList nodes = root.SelectNodes("/Response/Detail/Data");
if (nodes == null)
{
// Look the root content to see if contains a node with the error.
// In that case, do a SelectSingleNode. Here is an example with a
// sample path (is not real, I don't know anything about the XML
// error response schema)
XmlNode node = root.SelectSingleNode("/Response/Detail/Error");
var error = node?.InnerText;
if (string.IsNullOrEmpty(error))
{
// If for any reason we can't get any error...
error = $"Unknown error on query: {ConNo}";
}
}
else
{
foreach (XmlNode node in nodes)
{
// ...
}
}
In my MakeEnvelope method, I have added an event notification as follows:
var en = new EventNotification
{
Url = "<Listener URL>",
LoggingEnabled = "true",
RequireAcknowledgment = "true",
EnvelopeEvents = new List<EnvelopeEvent>
{
new EnvelopeEvent
{
EnvelopeEventStatusCode = "Completed",
IncludeDocuments = "true"
},
new EnvelopeEvent
{
EnvelopeEventStatusCode = "Delivered",
IncludeDocuments = "false"
},
new EnvelopeEvent
{
EnvelopeEventStatusCode = "Sent",
IncludeDocuments = "false"
}
}
};
envelopeDefinition.EventNotification = en;
I get the following XML response (I removed the Names and Emails, and changed the Guids):
<?xml version="1.0" encoding="utf-8"?><DocuSignEnvelopeInformation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.docusign.net/API/3.0"><EnvelopeStatus><RecipientStatuses><RecipientStatus><Type>Signer</Type><Email>someEmail#email.com</Email><UserName>SomeUserName</UserName><RoutingOrder>1</RoutingOrder><Sent>2021-04-28T14:14:41.163</Sent><Delivered>2021-04-28T14:14:54.997</Delivered><Signed>2021-04-28T14:14:59.73</Signed><DeclineReason xsi:nil="true" /><Status>Completed</Status><RecipientIPAddress>IP Address</RecipientIPAddress><ClientUserId>The ClientId</ClientUserId><CustomFields /><TabStatuses><TabStatus><TabType>SignHere</TabType><Status>Signed</Status><XPosition>938</XPosition><YPosition>1169</YPosition><TabLabel>Sign Here</TabLabel><TabName>SignHere</TabName><TabValue /><DocumentID>3</DocumentID><PageNumber>1</PageNumber></TabStatus></TabStatuses><AccountStatus>Active</AccountStatus><RecipientId>f571daaf-cd2c-4fge-a72e-d32277929305</RecipientId></RecipientStatus><RecipientStatus><Type>Signer</Type><Email>anotherEmail.Email.com</Email><UserName>Another Name</UserName><RoutingOrder>1</RoutingOrder><Sent>2021-04-28T14:14:41.503</Sent><DeclineReason xsi:nil="true" /><Status>Sent</Status><RecipientIPAddress /><CustomFields /><TabStatuses><TabStatus><TabType>SignHere</TabType><Status>Active</Status><XPosition>196</XPosition><YPosition>1169</YPosition><TabLabel>Sign Here</TabLabel><TabName>SignHere</TabName><TabValue /><DocumentID>3</DocumentID><PageNumber>1</PageNumber></TabStatus></TabStatuses><AccountStatus>Active</AccountStatus><RecipientId>1eb9d346-33ae-4444-b5f1-be30f8bcf041</RecipientId></RecipientStatus></RecipientStatuses><TimeGenerated>2021-04-28T14:15:03.3011225</TimeGenerated><EnvelopeID>3c9281c7-3345-44ac-9c4f-3d39274c49f4</EnvelopeID><Subject>Please sign this document</Subject><UserName>User Name</UserName><Email>Users Email Address Here</Email><Status>Sent</Status><Created>2021-04-28T14:14:40.41</Created><Sent>2021-04-28T14:14:41.557</Sent><ACStatus>Original</ACStatus><ACStatusDate>2021-04-28T14:14:40.41</ACStatusDate><ACHolder>Account Holders name</ACHolder><ACHolderEmail>Account Holders Email</ACHolderEmail><ACHolderLocation>DocuSign</ACHolderLocation><SigningLocation>Online</SigningLocation><SenderIPAddress>Senders IP Address</SenderIPAddress><EnvelopePDFHash /><CustomFields /><AutoNavigation>true</AutoNavigation><EnvelopeIdStamping>true</EnvelopeIdStamping><AuthoritativeCopy>false</AuthoritativeCopy><DocumentStatuses><DocumentStatus><ID>3</ID><Name>PG Document</Name><TemplateName /><Sequence>1</Sequence></DocumentStatus></DocumentStatuses></EnvelopeStatus></DocuSignEnvelopeInformation>
I was having issues parsing the response, so I created a console application to parse the xml string, and using the response xml shown above. The following is the code that I used to parse.
static void Main(string[] args)
{
string strXML = GetXML();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(strXML);
string xpath = "DocuSignEnvelopeInformation/EnvelopeStatus";
var nodes = xmlDoc.SelectNodes(xpath);
foreach (XmlNode childrenNode in nodes)
{
Console.WriteLine(childrenNode.SelectSingleNode("//status").Value);
}
Console.Read();
}
nodes is always empty.
What am I missing here?
Thank you in advance.
I was able to get it to work by using the namespace it was using.
var ns = new XmlNamespaceManager(xmlDoc.NameTable);
ns.AddNamespace("docusign", "http://www.docusign.net/API/3.0");
var envelopeId = xmlDoc.SelectSingleNode("//docusign:EnvelopeID", ns);
var status = xmlDoc.SelectSingleNode("//docusign:Status", ns);
I changed the method and I am able to get the values:
Request.InputStream.Position = 0;
var xmlDoc = new XmlDocument();
xmlDoc.Load(Request.InputStream);
var ns = new XmlNamespaceManager(xmlDoc.NameTable);
ns.AddNamespace("docusign", "http://www.docusign.net/API/3.0");
var envelopeId = xmlDoc.SelectSingleNode("//docusign:EnvelopeID", ns);
var status = xmlDoc.SelectSingleNode("//docusign:EnvelopeStatus/docusign:Status", ns);
if (envelopeId == null || String.IsNullOrEmpty(envelopeId.InnerText) || status == null || string.IsNullOrEmpty(status.InnerText)) return;
if (status.InnerText.ToLower() == "completed")
{
// Update the Document Status
var extra = _uow.JobExtraRepository.GetByEnvelopeId(envelopeId.InnerText);
extra.StatusId = (int)ExtraJobStatus.Completed;
Save();
var docBytes = xmlDoc.SelectSingleNode("//docusign:docBytes", ns);
}
xWaarde.Value is overriding with new values and flushing old values.
how to stored multiple values in Xelement.
private XElement[] AddCoordinatenList(XElement childElements)
{
XmlNode xmlCoordinatenNode = Utility.GetMappingValues(Constants.BMCoordinaten, ConnectionType.BM);
XmlNode xWaardeNode = Utility.GetMappingValues(Constants.BMXwaarde, ConnectionType.BM);
XmlNode yWaardeNode = Utility.GetMappingValues(Constants.BMYwaarde, ConnectionType.BM);
XmlNode CoordinateX = Utility.GetMappingValues(Constants.XCoordinate, ConnectionType.BM);
XmlNode CoordinateY = Utility.GetMappingValues(Constants.YCoordinate, ConnectionType.BM);
var coordinatenList = from document in childElements.DescendantsAndSelf() where document.Name.LocalName == xmlCoordinatenNode.Name select document;
List<XElement> xcoordinatenList = new List<XElement>();
XElement xWaarde = new XElement(CoordinateX.Name);
XElement yWaarde = new XElement(CoordinateY.Name);
if (coordinatenList.Count() > 0)
{
foreach (XElement element in coordinatenList.Descendants())
{
if (element.Name.LocalName == xWaardeNode.Name)
{
xWaarde.Value = element.Value;
}
if (element.Name.LocalName == yWaardeNode.Name)
{
yWaarde.Value = element.Value;
}
}
}
return xcoordinatenList.ToArray();
}
It's not possible. Use Attributes:
XAttribute attribute = new XAttribute("name1", <value>);
element.Add(attribute);
attribute = new XAttribute("name2", <value>);
element.Add(attribute);
You can also add a list of child elements or add all strings as one string, separated by a comma for instance.
A commercial application uses XML to hold a list of variables it uses. I do not have control over the format of the XML. I can use any version of .Net.
Trying to write simpler code to assign a UserVar node to an object I've created. Right now I locate the node of the section of UserVars which contains all of the individual UserVars, iterate through each UserVar looking for the element "Name" and then see if it matches my desired variable name.
For example I want the variable "Changed" I will get an AcmeVar object (my creation) with the properties Name and Width set to "Changed" and 1. But I have to manually iterate through the code.
Seems like I'm doing this the hard way. Ideally I'd love to use Linq to return a UserVar node that has the matching element Name. The similar questions on Stackoverflow don't follow a similar pattern or at least not from what I can see. Not all variables use all of the element types.
Sample: XML
<?xml version="1.0" encoding="UTF-8"?>
<Application>
<Vars>
<UserVars>
<UserVar>
<Name>"Quantity"</Name>
<Width>4</Width>
<VarValue>"1"</VarValue>
</UserVar>
<UserVar>
<Name>"Printers"</Name>
<Width>255</Width>
</UserVar>
<UserVar>
<Name>"Changed"</Name>
<Width>1</Width>
</UserVar>
<UserVar>
<Name>"Weight"</Name>
<VarValue>"450.1"</VarValue>
</UserVar>
</UserVars>
</Vars>
</Application>
Current Code:
public static bool GetVariable(string xmlDocNm, string varName, out AcmeVariable acmeVar)
{
// Returns true if found without error
bool result = false;
acmeVar = new AcmeVariable ();
try {
XPathDocument doc = new XPathDocument(xmlDocNm);
XPathNavigator nav = doc.CreateNavigator();
// Compile a standard XPath expression
XPathExpression expr;
expr = nav.Compile(AcmeConst.XPathInternalVariable);
XPathNodeIterator iterator = nav.Select(expr);
// Iterate on the node set
try {
bool variableFound;
bool skipNode;
char[] CharsToTrim = { '\"' }; //
while (iterator.MoveNext()) {
variableFound = false;
skipNode = false;
XPathNavigator nav2 = iterator.Current.Clone();
if (nav2.MoveToFirstChild()) {
// nav2 points to the first element in an UserVar Node
acmeVar = new AcmeVariable (); //Start with a fresh Acme Variable
if (nav2.LocalName == AcmeConst.AttrName) {
variableFound = true;
skipNode = nav2.Value.Trim(CharsToTrim) != varName;
}
if (!skipNode) {
AssignXMLNavNodetoAcmeVar(nav2, acmeVar);
while (nav2.MoveToNext() && !skipNode) {
if (nav2.LocalName == AcmeConst.AttrName) {
variableFound = true;
skipNode = nav2.Value.Trim(CharsToTrim) != varName;
}
AssignXMLNavNodetoAcmeVar(nav2, acmeVar);
}
}
}
if (variableFound && !skipNode) {
result = true;
break; //We have found the variable and collected all elements
}
else {
acmeVar = null;
}
}
}
catch (Exception ex) {
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK, MessageBoxIcon.Error);
acmeVar = null;
result = false;
}
}
catch (Exception ex) {
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK, MessageBoxIcon.Error);
acmeVar = null;
result = false;
}
return result;
}
Try this:
var queryValue = "Quantity";
var xDoc = XDocument.Load(#"UserVars.xml");//This is your xml path value
var userVar = xDoc.Descendents("UserVar").Where(x => x.Element("Name").Value == queryValue )
.FirstOrDefault();
var name = userVar.Element("Name").Value ?? string.Empty;
var width = userVar.Element("Width").Value ?? string.Empty;
var varValue = userVar.Element("VarValue").Value ?? string.Empty;
I just want to make comment with your XML, especially in the part where <Name>"Quantity"</Name> element value were enclosed with ""
But if you have no bound with the xml, you just need to escape those ". eg. var queryValue = #""Quantity"";
Assuming that your key is Name, and all nodes will contain that, then this should work:
string valImLookingFor = "\"Changed\"";
XDocument doc = XDocument.Load("file"); // or XDocument doc = XDocument.Parse(xmlString);
var node = doc.Descendants("UserVar").Where(x => x.Element("Name").Value == valImLookingFor).First();
That should get you your node, then you can pull out the subnodes values you need.
I started to use Json.NET to convert a string in JSON format to object or viceversa. I am not sure in the Json.NET framework, is it possible to convert a string in JSON to XML format and viceversa?
Yes. Using the JsonConvert class which contains helper methods for this precise purpose:
// To convert an XML node contained in string xml into a JSON string
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string jsonText = JsonConvert.SerializeXmlNode(doc);
// To convert JSON text contained in string json into an XML node
XmlDocument doc = JsonConvert.DeserializeXmlNode(json);
Documentation here: Converting between JSON and XML with Json.NET
Yes, you can do it (I do) but Be aware of some paradoxes when converting, and handle appropriately. You cannot automatically conform to all interface possibilities, and there is limited built-in support in controlling the conversion- many JSON structures and values cannot automatically be converted both ways. Keep in mind I am using the default settings with Newtonsoft JSON library and MS XML library, so your mileage may vary:
XML -> JSON
All data becomes string data (for example you will always get "false" not false or "0" not 0) Obviously JavaScript treats these differently in certain cases.
Children elements can become nested-object {} OR nested-array [ {} {} ...] depending if there is only one or more than one XML child-element. You would consume these two differently in JavaScript, etc. Different examples of XML conforming to the same schema can produce actually different JSON structures this way. You can add the attribute json:Array='true' to your element to workaround this in some (but not necessarily all) cases.
Your XML must be fairly well-formed, I have noticed it doesn't need to perfectly conform to W3C standard, but 1. you must have a root element and 2. you cannot start element names with numbers are two of the enforced XML standards I have found when using Newtonsoft and MS libraries.
In older versions, Blank elements do not convert to JSON. They are ignored. A blank element does not become "element":null
A new update changes how null can be handled (Thanks to Jon Story for pointing it out): https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_NullValueHandling.htm
JSON -> XML
You need a top level object that will convert to a root XML element or the parser will fail.
Your object names cannot start with a number, as they cannot be converted to elements (XML is technically even more strict than this) but I can 'get away' with breaking some of the other element naming rules.
Please feel free to mention any other issues you have noticed, I have developed my own custom routines for preparing and cleaning the strings as I convert back and forth. Your situation may or may not call for prep/cleanup. As StaxMan mentions, your situation may actually require that you convert between objects...this could entail appropriate interfaces and a bunch of case statements/etc to handle the caveats I mention above.
You can do these conversions also with the .NET Framework:
JSON to XML: by using System.Runtime.Serialization.Json
var xml = XDocument.Load(JsonReaderWriterFactory.CreateJsonReader(
Encoding.ASCII.GetBytes(jsonString), new XmlDictionaryReaderQuotas()));
XML to JSON: by using System.Web.Script.Serialization
var json = new JavaScriptSerializer().Serialize(GetXmlData(XElement.Parse(xmlString)));
private static Dictionary<string, object> GetXmlData(XElement xml)
{
var attr = xml.Attributes().ToDictionary(d => d.Name.LocalName, d => (object)d.Value);
if (xml.HasElements) attr.Add("_value", xml.Elements().Select(e => GetXmlData(e)));
else if (!xml.IsEmpty) attr.Add("_value", xml.Value);
return new Dictionary<string, object> { { xml.Name.LocalName, attr } };
}
I'm not sure there is point in such conversion (yes, many do it, but mostly to force a square peg through round hole) -- there is structural impedance mismatch, and conversion is lossy. So I would recommend against such format-to-format transformations.
But if you do it, first convert from json to object, then from object to xml (and vice versa for reverse direction). Doing direct transformation leads to ugly output, loss of information, or possibly both.
Thanks for David Brown's answer. In my case of JSON.Net 3.5, the convert methods are under the JsonConvert static class:
XmlNode myXmlNode = JsonConvert.DeserializeXmlNode(myJsonString); // is node not note
// or .DeserilizeXmlNode(myJsonString, "root"); // if myJsonString does not have a root
string jsonString = JsonConvert.SerializeXmlNode(myXmlNode);
I searched for a long time to find alternative code to the accepted solution in the hopes of not using an external assembly/project. I came up with the following thanks to the source code of the DynamicJson project:
public XmlDocument JsonToXML(string json)
{
XmlDocument doc = new XmlDocument();
using (var reader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(json), XmlDictionaryReaderQuotas.Max))
{
XElement xml = XElement.Load(reader);
doc.LoadXml(xml.ToString());
}
return doc;
}
Note: I wanted an XmlDocument rather than an XElement for xPath purposes.
Also, this code obviously only goes from JSON to XML, there are various ways to do the opposite.
Here is the full c# code to convert xml to json
public static class JSon
{
public static string XmlToJSON(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
return XmlToJSON(doc);
}
public static string XmlToJSON(XmlDocument xmlDoc)
{
StringBuilder sbJSON = new StringBuilder();
sbJSON.Append("{ ");
XmlToJSONnode(sbJSON, xmlDoc.DocumentElement, true);
sbJSON.Append("}");
return sbJSON.ToString();
}
// XmlToJSONnode: Output an XmlElement, possibly as part of a higher array
private static void XmlToJSONnode(StringBuilder sbJSON, XmlElement node, bool showNodeName)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(node.Name) + "\": ");
sbJSON.Append("{");
// Build a sorted list of key-value pairs
// where key is case-sensitive nodeName
// value is an ArrayList of string or XmlElement
// so that we know whether the nodeName is an array or not.
SortedList<string, object> childNodeNames = new SortedList<string, object>();
// Add in all node attributes
if (node.Attributes != null)
foreach (XmlAttribute attr in node.Attributes)
StoreChildNode(childNodeNames, attr.Name, attr.InnerText);
// Add in all nodes
foreach (XmlNode cnode in node.ChildNodes)
{
if (cnode is XmlText)
StoreChildNode(childNodeNames, "value", cnode.InnerText);
else if (cnode is XmlElement)
StoreChildNode(childNodeNames, cnode.Name, cnode);
}
// Now output all stored info
foreach (string childname in childNodeNames.Keys)
{
List<object> alChild = (List<object>)childNodeNames[childname];
if (alChild.Count == 1)
OutputNode(childname, alChild[0], sbJSON, true);
else
{
sbJSON.Append(" \"" + SafeJSON(childname) + "\": [ ");
foreach (object Child in alChild)
OutputNode(childname, Child, sbJSON, false);
sbJSON.Remove(sbJSON.Length - 2, 2);
sbJSON.Append(" ], ");
}
}
sbJSON.Remove(sbJSON.Length - 2, 2);
sbJSON.Append(" }");
}
// StoreChildNode: Store data associated with each nodeName
// so that we know whether the nodeName is an array or not.
private static void StoreChildNode(SortedList<string, object> childNodeNames, string nodeName, object nodeValue)
{
// Pre-process contraction of XmlElement-s
if (nodeValue is XmlElement)
{
// Convert <aa></aa> into "aa":null
// <aa>xx</aa> into "aa":"xx"
XmlNode cnode = (XmlNode)nodeValue;
if (cnode.Attributes.Count == 0)
{
XmlNodeList children = cnode.ChildNodes;
if (children.Count == 0)
nodeValue = null;
else if (children.Count == 1 && (children[0] is XmlText))
nodeValue = ((XmlText)(children[0])).InnerText;
}
}
// Add nodeValue to ArrayList associated with each nodeName
// If nodeName doesn't exist then add it
List<object> ValuesAL;
if (childNodeNames.ContainsKey(nodeName))
{
ValuesAL = (List<object>)childNodeNames[nodeName];
}
else
{
ValuesAL = new List<object>();
childNodeNames[nodeName] = ValuesAL;
}
ValuesAL.Add(nodeValue);
}
private static void OutputNode(string childname, object alChild, StringBuilder sbJSON, bool showNodeName)
{
if (alChild == null)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
sbJSON.Append("null");
}
else if (alChild is string)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
string sChild = (string)alChild;
sChild = sChild.Trim();
sbJSON.Append("\"" + SafeJSON(sChild) + "\"");
}
else
XmlToJSONnode(sbJSON, (XmlElement)alChild, showNodeName);
sbJSON.Append(", ");
}
// Make a string safe for JSON
private static string SafeJSON(string sIn)
{
StringBuilder sbOut = new StringBuilder(sIn.Length);
foreach (char ch in sIn)
{
if (Char.IsControl(ch) || ch == '\'')
{
int ich = (int)ch;
sbOut.Append(#"\u" + ich.ToString("x4"));
continue;
}
else if (ch == '\"' || ch == '\\' || ch == '/')
{
sbOut.Append('\\');
}
sbOut.Append(ch);
}
return sbOut.ToString();
}
}
To convert a given XML string to JSON, simply call XmlToJSON() function as below.
string xml = "<menu id=\"file\" value=\"File\"> " +
"<popup>" +
"<menuitem value=\"New\" onclick=\"CreateNewDoc()\" />" +
"<menuitem value=\"Open\" onclick=\"OpenDoc()\" />" +
"<menuitem value=\"Close\" onclick=\"CloseDoc()\" />" +
"</popup>" +
"</menu>";
string json = JSON.XmlToJSON(xml);
// json = { "menu": {"id": "file", "popup": { "menuitem": [ {"onclick": "CreateNewDoc()", "value": "New" }, {"onclick": "OpenDoc()", "value": "Open" }, {"onclick": "CloseDoc()", "value": "Close" } ] }, "value": "File" }}
For convert JSON string to XML try this:
public string JsonToXML(string json)
{
XDocument xmlDoc = new XDocument(new XDeclaration("1.0", "utf-8", ""));
XElement root = new XElement("Root");
root.Name = "Result";
var dataTable = JsonConvert.DeserializeObject<DataTable>(json);
root.Add(
from row in dataTable.AsEnumerable()
select new XElement("Record",
from column in dataTable.Columns.Cast<DataColumn>()
select new XElement(column.ColumnName, row[column])
)
);
xmlDoc.Add(root);
return xmlDoc.ToString();
}
For convert XML to JSON try this:
public string XmlToJson(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string jsonText = JsonConvert.SerializeXmlNode(doc);
return jsonText;
}
Here is a simple snippet that converts a XmlNode (recursively) into a hashtable, and groups multiple instances of the same child into an array (as an ArrayList).
The Hashtable is usually accepted to convert into JSON by most of the JSON libraries.
protected object convert(XmlNode root){
Hashtable obj = new Hashtable();
for(int i=0,n=root.ChildNodes.Count;i<n;i++){
object result = null;
XmlNode current = root.ChildNodes.Item(i);
if(current.NodeType != XmlNodeType.Text)
result = convert(current);
else{
int resultInt;
double resultFloat;
bool resultBoolean;
if(Int32.TryParse(current.Value, out resultInt)) return resultInt;
if(Double.TryParse(current.Value, out resultFloat)) return resultFloat;
if(Boolean.TryParse(current.Value, out resultBoolean)) return resultBoolean;
return current.Value;
}
if(obj[current.Name] == null)
obj[current.Name] = result;
else if(obj[current.Name].GetType().Equals(typeof(ArrayList)))
((ArrayList)obj[current.Name]).Add(result);
else{
ArrayList collision = new ArrayList();
collision.Add(obj[current.Name]);
collision.Add(result);
obj[current.Name] = collision;
}
}
return obj;
}
Try this function. I just wrote it and haven't had much of a chance to test it, but my preliminary tests are promising.
public static XmlDocument JsonToXml(string json)
{
XmlNode newNode = null;
XmlNode appendToNode = null;
XmlDocument returnXmlDoc = new XmlDocument();
returnXmlDoc.LoadXml("<Document />");
XmlNode rootNode = returnXmlDoc.SelectSingleNode("Document");
appendToNode = rootNode;
string[] arrElementData;
string[] arrElements = json.Split('\r');
foreach (string element in arrElements)
{
string processElement = element.Replace("\r", "").Replace("\n", "").Replace("\t", "").Trim();
if ((processElement.IndexOf("}") > -1 || processElement.IndexOf("]") > -1) && appendToNode != rootNode)
{
appendToNode = appendToNode.ParentNode;
}
else if (processElement.IndexOf("[") > -1)
{
processElement = processElement.Replace(":", "").Replace("[", "").Replace("\"", "").Trim();
newNode = returnXmlDoc.CreateElement(processElement);
appendToNode.AppendChild(newNode);
appendToNode = newNode;
}
else if (processElement.IndexOf("{") > -1 && processElement.IndexOf(":") > -1)
{
processElement = processElement.Replace(":", "").Replace("{", "").Replace("\"", "").Trim();
newNode = returnXmlDoc.CreateElement(processElement);
appendToNode.AppendChild(newNode);
appendToNode = newNode;
}
else
{
if (processElement.IndexOf(":") > -1)
{
arrElementData = processElement.Replace(": \"", ":").Replace("\",", "").Replace("\"", "").Split(':');
newNode = returnXmlDoc.CreateElement(arrElementData[0]);
for (int i = 1; i < arrElementData.Length; i++)
{
newNode.InnerText += arrElementData[i];
}
appendToNode.AppendChild(newNode);
}
}
}
return returnXmlDoc;
}
I did like David Brown said but I got the following exception.
$exception {"There are multiple root elements. Line , position ."} System.Xml.XmlException
One solution would be to modify the XML file with a root element but that is not always necessary and for an XML stream it might not be possible either. My solution below:
var path = Path.GetFullPath(Path.Combine(Environment.CurrentDirectory, #"..\..\App_Data"));
var directoryInfo = new DirectoryInfo(path);
var fileInfos = directoryInfo.GetFiles("*.xml");
foreach (var fileInfo in fileInfos)
{
XmlDocument doc = new XmlDocument();
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
using (XmlReader reader = XmlReader.Create(fileInfo.FullName, settings))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
var node = doc.ReadNode(reader);
string json = JsonConvert.SerializeXmlNode(node);
}
}
}
}
Example XML that generates the error:
<parent>
<child>
Text
</child>
</parent>
<parent>
<child>
<grandchild>
Text
</grandchild>
<grandchild>
Text
</grandchild>
</child>
<child>
Text
</child>
</parent>
I have used the below methods to convert the JSON to XML
List <Item> items;
public void LoadJsonAndReadToXML() {
using(StreamReader r = new StreamReader(# "E:\Json\overiddenhotelranks.json")) {
string json = r.ReadToEnd();
items = JsonConvert.DeserializeObject <List<Item>> (json);
ReadToXML();
}
}
And
public void ReadToXML() {
try {
var xEle = new XElement("Items",
from item in items select new XElement("Item",
new XElement("mhid", item.mhid),
new XElement("hotelName", item.hotelName),
new XElement("destination", item.destination),
new XElement("destinationID", item.destinationID),
new XElement("rank", item.rank),
new XElement("toDisplayOnFod", item.toDisplayOnFod),
new XElement("comment", item.comment),
new XElement("Destinationcode", item.Destinationcode),
new XElement("LoadDate", item.LoadDate)
));
xEle.Save("E:\\employees.xml");
Console.WriteLine("Converted to XML");
} catch (Exception ex) {
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
I have used the class named Item to represent the elements
public class Item {
public int mhid { get; set; }
public string hotelName { get; set; }
public string destination { get; set; }
public int destinationID { get; set; }
public int rank { get; set; }
public int toDisplayOnFod { get; set; }
public string comment { get; set; }
public string Destinationcode { get; set; }
public string LoadDate { get; set; }
}
It works....
Cinchoo ETL - an open source library available to do the conversion of Xml to JSON easily with few lines of code
Xml -> JSON:
using (var p = new ChoXmlReader("sample.xml"))
{
using (var w = new ChoJSONWriter("sample.json"))
{
w.Write(p);
}
}
JSON -> Xml:
using (var p = new ChoJsonReader("sample.json"))
{
using (var w = new ChoXmlWriter("sample.xml"))
{
w.Write(p);
}
}
Sample fiddle: https://dotnetfiddle.net/enUJKu
Checkout CodeProject articles for some additional help.
Disclaimer: I'm the author of this library.
Here's an example of how to convert JSON to XML using .NET built-in libraries (instead of 3rd party libraries like Newtonsoft).
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Xml.Linq;
XDocument xmlDoc = jsonToXml(jsonObj);
private XDocument jsonToXml(JsonObject obj)
{
var xmlDoc = new XDocument();
var root = new XElement("Root");
xmlDoc.Add(root);
foreach (var prop in obj)
{
var xElement = new XElement(prop.Key);
xElement.Value = prop.Value.ToString();
root.Add(xElement);
}
return xmlDoc;
}