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how to insert a data in json text file

I need to insert a new piece of data in a text file.
This is the method I use to read the text file:
try
{
var path = #"text file\\GetAllEmp.txt";
string rawJson = File.ReadAllText(path, Encoding.UTF8);
ObservableCollection<EmployeeItem> Employee = new ObservableCollection<EmployeeItem>();
var jsonData = JsonConvert.SerializeObject(rawJson);
List<EmployeeItem> emp = JsonConvert.DeserializeObject<List<EmployeeItem>>(rawJson);
listitem.ItemsSource = emp;
I just need to add new data in the text file.
How to add data?
What I have tried is:
public static void Writeemployee()
{
var path = #"text file\\GetAllEmp.txt";
string rawJson = File.ReadAllText(path);
List<EmployeeItem> emp = JsonConvert.DeserializeObject<List<EmployeeItem>>(rawJson);
var abs = emp;
for (int i = 0; i < abs.Count; i++)
{
EmployeeItem s_Item = new EmployeeItem();
int SID = ((int)s_Item.SiteID);
DataAccess.AddEmployee(s_Item);
}
}
My data access:
public static async void AddEmployeee(EmployeeItem Employee)
{
}
I just don't know how to insert. If there is any other method to insert, please let me know.

Using the file APIs in UWP cannot add items to the Json file without deleting the original items.
Because of the format of the Json file, items need to be placed in [{items1},{items2 }], so you need to read all the items, then add new elements, convert the list to Json format and write it to the file.
Here is a code sample.
EmployeeItem employeeItem = new EmployeeItem
{
Id = 8,
GroupID = 18,
SiteID = 5565
};
StorageFolder appFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
string path = #"GetAllEmp.txt";
//get data
string rawJson = File.ReadAllText(path, Encoding.UTF8);
ObservableCollection<EmployeeItem> Employee = new ObservableCollection<EmployeeItem>();
var jsonData = JsonConvert.SerializeObject(rawJson);
List<EmployeeItem> emp = JsonConvert.DeserializeObject<List<EmployeeItem>>(rawJson);
emp.Add(employeeItem);
StorageFile sampleFile = await appFolder.GetFileAsync(path);
await Windows.Storage.FileIO.WriteTextAsync(sampleFile, JsonConvert.SerializeObject(emp));

Create PDF from existing pdf with azure storage

I made a bot application with the Microsoft Botbuilder. Now I want to create a pdf-file from the user input. The file should be stored in my azure storage.
I have a "pdf-template" which should be copied and modified (this file is in the azure storage already). It has some textboxes which should be filled with the user input. I already wrote the code for that with iTextSharp.
But I need a filestream for this code. Does anybody know how to get the filestream from the file in my azure storage? Or is there maybe another way to finish my task?
Edit:
Here is the code where I need the filestream
string fileNameExisting = Path.Combine(Directory.GetCurrentDirectory(), "Some.pdf");
string fileNameNew = #"Path/Some2.pdf";
var inv = new Invention
{
Inventor = new Inventor { Firstname = "TEST!", Lastname= "TEST!" },
Date = DateTime.Now,
Title = "TEST",
Slogan = "TEST!",
Description = "TEST!",
Advantages = "TEST!s",
TaskPosition = "TEST!",
TaskSolution = "TEST!"
};
using (var existingFileStream = new FileStream(fileNameExisting, FileMode.Open))
using (var newFileStream = new FileStream(fileNameNew, FileMode.Create))
{
// Open existing PDF
var pdfReader = new PdfReader(existingFileStream);
// PdfStamper, which will create
var stamper = new PdfStamper(pdfReader, newFileStream);
var form = stamper.AcroFields;
var fieldKeys = form.Fields.Keys;
foreach (string fieldKey in fieldKeys)
{
var props = fieldKey.Split('.');
string t = GetProp(props, inv);
form.SetField(fieldKey, t);
}
stamper.Close();
pdfReader.Close();
}
}
public static string GetProp(string[] classes, object oldObj)
{
var obj = oldObj.GetType().GetProperty(classes[0]).GetValue(oldObj, null);
if(classes.Length>1)
{
classes = classes.Skip(1).ToArray();
return GetProp(classes, obj);
}
Console.WriteLine(obj.ToString());
return obj.ToString();
}

The PdfReader constructor also takes a byte array. You should be able to create the object using something like:
var pdfTemplateBytes = await new WebClient().DownloadDataTaskAsync("https://myaccount.blob.core.windows.net/templates/mytemplate.pdf");
var pdfReader = new PdfReader(pdfTemplateBytes );

copying openXML image from one document to another

We have conditional Footers that INCLUDETEXT based on the client:
IF $CLIENT = "CLIENT1" "{INCLUDETEXT "CLIENT1HEADER.DOCX"}" ""
Depending on our document, there could be a varying amount of IF/ELSE, and these all work correctly for merging the correct files in the correct place.
However, some of these documents may have client specific images/branding, which also need to be copied across from the INCLUDETEXT file.
Below is the method that is called to replace any Picture elements that exist in the IEnumerable<Run> that is copied from the Source document to the Target document.
The image is copied fine, however it doesn't appear to update the RID in my Picture or add a record into the .XML.Rels files. (I even tried adding a ForEach to add to all the headers and footers, to see if this made any difference.
private void InsertImagesFromOldDocToNewDoc(WordprocessingDocument source, WordprocessingDocument target, IEnumerable<Picture> pics)
{
IEnumerable<Picture> imageElements = source.MainDocumentPart.Document.Descendants<Run>().Where(x => x.Descendants<Picture>().FirstOrDefault() != null).Select(x => x.Descendants<Picture>().FirstOrDefault());
foreach (Picture pic in pics) //the new pics
{
Picture oldPic = imageElements.Where(x => x.Equals(pic)).FirstOrDefault();
if (oldPic != null)
{
string imageId = "";
ImageData shape = oldPic.Descendants<ImageData>().FirstOrDefault();
ImagePart p = source.MainDocumentPart.GetPartById(shape.RelationshipId) as ImagePart;
ImagePart newPart = target.MainDocumentPart.AddPart<ImagePart>(p);
newPart.FeedData(p.GetStream());
shape.RelId = target.MainDocumentPart.GetIdOfPart(newPart);
string relPart = target.MainDocumentPart.CreateRelationshipToPart(newPart);
}
}
}
Has anyone come across this issue before?
It appears the OpenXML SDK documentation is a 'little' sparse...

Late reaction but this thread helped me a lot to got it working. Here my solution for copying a document with images
private static void CopyDocumentWithImages(string path)
{
if (!Path.GetFileName(path).StartsWith("~$"))
{
using (var source = WordprocessingDocument.Open(path, false))
{
using (var newDoc = source.CreateNew(path.Replace(".docx", "-images.docx")))
{
foreach (var e in source.MainDocumentPart.Document.Body.Elements())
{
var clonedElement = e.CloneNode(true);
clonedElement.Descendants<DocumentFormat.OpenXml.Drawing.Blip>()
.ToList().ForEach(blip =>
{
var newRelation = newDoc.CopyImage(blip.Embed, source);
blip.Embed = newRelation;
});
clonedElement.Descendants<DocumentFormat.OpenXml.Vml.ImageData>().ToList().ForEach(imageData =>
{
var newRelation = newDoc.CopyImage(imageData.RelationshipId, source);
imageData.RelationshipId = newRelation;
});
newDoc.MainDocumentPart.Document.Body.AppendChild(clonedElement);
}
newDoc.Save();
}
}
}
}
CopyImage:
public static string CopyImage(this WordprocessingDocument newDoc, string relId, WordprocessingDocument org)
{
var p = org.MainDocumentPart.GetPartById(relId) as ImagePart;
var newPart = newDoc.MainDocumentPart.AddPart(p);
newPart.FeedData(p.GetStream());
return newDoc.MainDocumentPart.GetIdOfPart(newPart);
}
CreateNew:
public static WordprocessingDocument CreateNew(this WordprocessingDocument org, string name)
{
var doc = WordprocessingDocument.Create(name, WordprocessingDocumentType.Document);
doc.AddMainDocumentPart();
doc.MainDocumentPart.Document = new Document(new Body());
using (var streamReader = new StreamReader(org.MainDocumentPart.ThemePart.GetStream()))
using (var streamWriter = new StreamWriter(doc.MainDocumentPart.AddNewPart<ThemePart>().GetStream(FileMode.Create)))
{
streamWriter.Write(streamReader.ReadToEnd());
}
using (var streamReader = new StreamReader(org.MainDocumentPart.StyleDefinitionsPart.GetStream()))
using (var streamWriter = new StreamWriter(doc.MainDocumentPart.AddNewPart<StyleDefinitionsPart>().GetStream(FileMode.Create)))
{
streamWriter.Write(streamReader.ReadToEnd());
}
return doc;
}

Stuart,
I had faced the same problem when I was trying to copy the numbering styles from one document to the other.
I think what Word does internally is, whenever an object is copied from one document to the other the ID for that object is not copied over to the new document and instead what happens is a new ID is assigned to it.
You'll have to get the ID after the image has been copied and then replace it everywhere your image has been used.
I hope this helps, this is what I to use copy numbering styles.
Cheers

How to append node to existing json file using json.net

i am working with json in asp.net using json.NET where on button click values from textbox gets added to json file called country.json. There are two textbox which takes country and its capital as values,
country.json file looks like this,
[
{
"country":"USA",
"capital":"New York"
},
{
"country":"China",
"capital":"Bejing"
},
{
"country":"India",
"capital":"New Delhi"
}
]
i was able to create json with one node but how to append or add second node to existing json.
Here is the c# code ,
public class country
{
public string Country { get; set; }
public string Capital { get; set; }
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
country ctry = new country();
ctry.Country = txtCtry.Text;
ctry.Capital = txtCapital.Text;
File.AppendAllText(MapPath("Data/countrycaps.json"),JsonConvert.SerializeObject(ctry,Formatting.Indented));
}

If you want a list, you should be saving a list, not a single node.
Here are the steps:
If file exists, load all nodes from existing file into list.
Add new node when user provides data.
Save list to file.

I needed the same feature and the round-trip was just too expensive.
This is what I came up with:
private static void AppendTransaction(Transaction transaction)
{
const string filename = "transactions.json";
bool firstTransaction = !File.Exists(filename);
JsonSerializer ser = new JsonSerializer();
ser.Formatting = Formatting.Indented;
ser.TypeNameHandling = TypeNameHandling.Auto;
using (var fs = new FileStream(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read))
{
Encoding enc = firstTransaction ? new UTF8Encoding(true) : new UTF8Encoding(false);
using (var sw = new StreamWriter(fs, enc))
using (var jtw = new JsonTextWriter(sw))
{
if (firstTransaction)
{
sw.Write("[");
sw.Flush();
}
else
{
fs.Seek(-Encoding.UTF8.GetByteCount("]"), SeekOrigin.End);
sw.Write(",");
sw.Flush();
}
ser.Serialize(jtw, transaction);
sw.Write(']');
}
}
}

Error while deserializing to json an unzipped string

I create a zip file and I copy in it a file that contains a serialized list of objects. The file encoding is in UTF8. Then I unzip the file and I try to deserialize it, but I will get this error:
Unexpected character encountered while parsing value: . Path '', line 0, position 0
The problem does not exist if I use ASCII encoding instead of UTF8. But I need to use the UTF8. So I am wondering if the DotNetZip library does not have full support for the UTF8, or maybe I am missing something else.
In order to reproduce the error:
Json library is the one at: http://json.codeplex.com/
The Zip library is the one at: http://dotnetzip.codeplex.com/
Create a simple class "Dog":
public class Dog
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
Then use this code (the last line will cause the error):
var list = new List<Dog>();
list.Add(new Dog { FirstName = "Arasd", LastName = "1234123" });
list.Add(new Dog { FirstName = "fghfgh", LastName = "vbnvbn" });
var serialized = JsonConvert.SerializeObject(list, Formatting.Indented);
var zipFile = new ZipFile(#"C:\Users\daviko\Desktop\test.zip");
using (zipFile)
{
zipFile.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
zipFile.UpdateEntry("dogs.txt", serialized, UTF8Encoding.UTF8);
zipFile.Save();
}
var readFromZipFile = string.Empty;
using (var input = new MemoryStream())
{
using (zipFile)
{
var entry = zipFile["dogs.txt"];
entry.Extract(input);
}
using (var output = new MemoryStream())
{
input.CopyTo(output);
readFromZipFile = new UTF8Encoding().GetString( input.ToArray());
}
}
var deserialized = JsonConvert.DeserializeObject<List<Dog>>(readFromZipFile);

The following code:
using (zipFile)
{
zipFile.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
zipFile.UpdateEntry("dogs.txt", serialized, UTF8Encoding.UTF8);
zipFile.Save();
}
will dispose the zipFile when it executes. So you must create the zipFile again, before your try reading it again.