Is there a way of returning an xml file from a REST webservice. I want to be able to call the server, dynamically create the file and return as if I'd simply returned the xml file as stored on disk.
I've managed to get fairly close by returning an XMLElement:
public XmlElement Airports()
{
//Dynamically build up and return
}
But when I referenced the location from a DTD it doesn't seem to behave in the same way e.g.
This works:
ENTITY XmlFile SYSTEM "http://localhost:59736/MyXmlFile.xml"
But this doesn't
ENTITY XmlFile SYSTEM "http://localhost:59736/MyService.svc/MyMethod"
There must be some subtle difference in the headers or something...
I assume your are not returning a file name or anything like that but the file contents as an XML response. In that case it really is no different if you return the contents of an existing file or generate the contents on the fly.
Related
I am trying to import an XML file into excel using Data -> Other Sources -> From XML Data import. When the file contains a 'µ' symbol, it gives the following error:
Invalid file reference. The path to the file is invalid, or one or
more of the referenced schemas could not be found.
The XML looks like this:
<root>
<File>
<FileName>Data\7.5 µg_mL Sample.pdf</FileName>
</File>
</root>
If i remove the microgram symbol, it works and Excel imports the data.
I am generating the XML file in .net using XNode.toString(), and if I run the XML through a validator, it returns no errors. It doesn't seem to matter if I put the XML declaration at the top of the file and declare it as UTF-8 or 16 either.
Any pointers welcome, i would ideally like to check for any characters that might cause this problem as i am guessing there are more than just the microgram symbol.
I am passing the XML string to a function that swaps out a custom xml file, i don't seem to have the option to change the file format here..
'Uses Ionic.Zip.ZipFile
Using zip As ZipFile = ZipFile.Read(fileDest)
zip.RemoveEntry(xmlPath)
zip.Save()
zip.AddEntry(xmlPath, customXml)
zip.Save()
End Using
Per the docs for the overload of AddEntry you are using:
The content for the entry is encoded using the default text encoding for the machine
You want this to be UTF-8, so you can use the overload that allows you to specify the encoding:
zip.AddEntry(xmlPath, customXml, Encoding.UTF8);
I have a large XML file (68Mb), I am using SQL Server Business Intelligence Studio 2008 to extract the XML data into a database. There is an error in the XML file some where that prevents it from executing. Possibly a missing tag or something like that. The file is so large I cant manually sort through it looking for the error.
Below is a sample of the the XML schema used.
How can I use XPath to sort through the XML in VS 2012 using C#?
An example would be great!
-<PhoneNumberList>
<PhoneNumber value="1234567890" type="Phone"/>
</PhoneNumberList>
-<YearsOfServiceList>
<YearsOfService experienceInMonths="24" description="SuperAdmin" objectCode="049"/>
</YearsOfServiceList>
</Person>
-<Person dob="1960-01-09T00:00:00" lastName="Smith" middleName="Will" firstName="John" id="9999-9999-9999">
-<SiteList>
-<Site id="2014" siteLongName="HA" siteCode="1255" systemCode="999">
-<StaffPositionList>
<StaffPosition id="73" staffPosition="Administrator"/>
</StaffPositionList>
</Site>
</SiteList>
-<ProgramList>
<Program id="1234" siteLongName="ABC" siteCode="0000" systemCode="205"/>
<Program id="5678" siteLongName="DEF" siteCode="0000" systemCode="357"/>
</ProgramList>
-<TypeList>
<Type Description="Leader" certificateType="D"/>
<Type Description="Professional" certificateType="P"/>
</TypeList>
-<EmailList>
<Email value="jsmith#somesite.com" type="Email"/>
</EmailList>
-<PhoneNumberList>
<PhoneNumber value="1234567890" type="Phone"/>
</PhoneNumberList>
-<YearsOfServiceList>
<YearsOfService experienceInMonths="24" description="SuperAdmin" objectCode="049"/>
</YearsOfServiceList>
</Person>
</PersonList>
</GetPersonDetail>
If you want to do it in code then create an XSD file describing a valid format for the data, embed it as a resource in your app and then use code like this
var errors = new List<string>();
var schemaSet = new XmlSchemaSet();
schemaSet.Add("", XmlReader.Create(new StringReader(Properties.Resources.NameOfXSDResource)));
document.Validate(schemaSet, (sender, args) =>
{
errors.Add(args.Message);
}
);
This will give you a list of validation errors.
You don't need to search "by hand" if you use a competent text editor. NotePad++'s XML plugin, for instance, can determine if your XML as a whole is well-formed or valid, and both instances will provide separate error messages.
If you don't have a schema and the file is well-formed, you can use the CLR's System.XML namespace to read in the document and then iterate through its nodes using LINQ-to-XML, which would allow you to very finely control which nodes go where. With LINQ, you could either create a new XML file with only the valid entries, procedurally correct the invalid entries as you determine where they are, or even just write to your SQL server database directly.
Your troubleshooting process should be something as follows:
Is the XML well-formed? I..e, does it comport to the fundamental rules of XML?
Is the XML valid? I.e., does it have the elements and attributes you expect?
Is your import query accurate?
For things like this I usually have luck checking and fixing the data in Notepad++. Install the XmlTools plugin and that has a menu for checking the xml syntax and tags.
Also, those dashes will give you problems, it's best to save out the xml file directly without copying by hand.
A 68MB XML file is no problem for XML editors such as XMLBlueprint 64-bit (http://www.xmlblueprint.com/) or Stylus Studio (http://www.stylusstudio.com/). Just check the well-formedness of your xml file (F7 in XMLBlueprint) and the editor will display the errors.
I have an XML String that I want to load into an Excel worksheet. I've almost got it to work but I need to be able to generate the schema for passing to XmlMaps.Add:
String xml; //This is already populated with an XML String; I want to get the schema based on the xml structure
Workbook w = Globals.ThisAddIn.Application.ActiveWorkbook;
w.XmlMaps.Add(***Need schema here***, "root node");
Is it possible to generate the schema programmatically here? I am receiving this XML string from a web service.
I'm trying to load a document with xml in c#
the name of xml file is variable, here is problem...
string filename="test01.xml";
XmlDocument root = new XmlDocument();
root.Load(filename);
the above code give me error: unable to connect to remote server or unable to load
but the following code works
XmlDocument root = new XmlDocument();
root.Load("test01.xml");
why is that?
You can try to specify the whole path (absolute path) to the file (not only the filename).
So instead of writing "test01.xml" you can try to write "C:\[... path to the file here]\test01.xml" and it should work as intended.
If you specify only the file name, the application will probably look for the file in the current directory (value in Environment.CurrentDirectory). I just tested this in a sample application.
It's worth mentioning that if you use FileName property from OpenFileDialog class as a case with 'using variable', it contains PATH to the file (despite its name ;)).
Does your XML contains DTD declaration with URL? Most probably parser tries to resolve it, and fails, because, say, automatic proxy does not accept its request.
I have managed to read in a saved .csv file on my hard disc and get the data to poputlate a data table. I now want to take that data and put it into XML format, then send the XML to a web service. How can I do this?
Thanks for your time.
One option would be to connect to the Web Service using WCF (or ASP.NET Web Services depending on which .NET version you're using). You can then easily fill the proxy classes the framework creates for you and call the service.
The second option would be to use an XmlTextWriter and use that to build the XML document in a MemoryStream. Once you have the XML document built in memory, you can flush the document and send it out to the Web Service.
A third option would be to use LINQ to XML to build the XML document on the fly. Depending on the structure you parse your CSV file into this may be easier/harder for you than using the XmlTextWriter.
XLinq is excellent for putting the data into XML. If you can use an up to date .NET framework I highly recommend it.
There's some info to get started with here (for example)
http://www.c-sharpcorner.com/UploadFile/mahesh/xLinkDoc06202007130827PM/xLinkDoc.aspx
As for sending that XML to a web service, perhaps you should be calling the web service via a client automatically generated using the Visual Studio ServiceReference tool.
You may or may not need to send XML to that -- in many cases services are object-based (i.e. you'd not need XLinq, provided you can parse the CSV into the correct objects.)
/EDIT:
Rough example for calling webservices using WCF:
using(var client = new ServiceReference1.ThirdPartyServiceClient())
{
client.SendSomething("123", "hello");
string output = client.GetSomething();
Console.WriteLine(output);
}
Following code can also be used.
public static List<Student> convertXMLtoList(string filePath)
{
XDocument doc = XDocument.Load(filePath);
List<Student> studentsMarks = doc.Descendants("Student").Select(x => new Student()
{
RollNo = int.Parse(x.Element("roll_no").Value),
Name = x.Element("name").Value,
}).ToList();
return studentsMarks;
}
Where XML looks like
<?xml version="1.0" encoding="utf-8"?>
<Students>
<Student>
<roll_no>1</roll_no>
<name>XYZ</name>
</Student>
...
</Students>
You can find more details at http://bit.ly/1eveLz3. you can find CSV to XML also on this post.
I haven't done this with a datatable, but it work great for other objects.
Try something like this:
public void writeToXML(DataTable inputData, string fileName) {
XmlSerializer xml = new XmlSerializer(typeof(DataTable));
StreamWriter sw = new StreamWriter(fileName);
xml.Serialize(sw, inputData);
sw.Close();
}
Edit: Just noticed you needed to pass it along to a web service. So instead of StreamWriter, use a memory stream...but same idea.
There are different options depending on how robust of a solution you want. Assuming you want to follow the quickest route you should look at the XmlWriter. Using an XmlWriter you can quickly generate an XML document, save to string and then pass along to your web service.