The following code:
var data = _context.People.ToList(); //_context is my DataContext.
produces the result:
[{ "name": "john", "age": "30" }, { "name": "jane", "age": "31" }]
but, I want it to be a dictionary, so something like:
{ "xldata" : [{ "name": "john", "age": "30" }, { "name": "jane", "age": "31" }] }
I got it to work by doing:
Dictionary<string,List<People>> vals = new Dictionary<string, List<People>>();
vals.Add("xldata", people);
but, my dictionary's value is System.Object[] instead of the people
The purpose of this is to export data, so when I get to this line:
var people = jss.Deserialize<List<People>>(args["xldata"]);
args["xldata"] is `System.Object[]` and it says `Invalid JSON primitive`.
Here is the script is supposed to export the data to excel:
$.post(urlContent + exportHandlerPath, Json, function(data) {
var viewData = {};
viewData.xldata = JSON.stringify(data);
html = ich.excelExportTemplate(viewData);
$excelExportContainer.html(html);
var input = $excelExportContainer.find('input#excelExportHiddenField');
input.val(viewData.xldata);
var $excelForm = $('#excelExportForm');
$excelForm.attr('action', '/People/ExportToExcel/');
$excelForm.submit();
}
Apparently your args["xldata"] does not contain a json string like [{ "name": "john", "age": "30" }, { "name": "jane", "age": "31" }], but something returned by a .net object .ToString().
With JavaScriptSerializer.Deserialize you can only deserialize json represenations.
Related
I have such items in Dynamo DB:
[{
"Id": "1",
"Data": {
"Value": "test"
}
},
{
"Id": "2",
"Data": {}
},
{
"Id": "3"
},
{
"Id": "4",
"Data": {
"Wrong": "234"
}
}]
And I'm trying to make it flatten, but for the Data.Value field only:
[{
"Id": "1",
"Value": "test"
},
{
"Id": "2"
},
{
"Id": "3"
},
{
"Id": "4"
}]
My Update request looks like this:
var request = new UpdateItemRequest {
TableName = "<table>",
Key = new Dictionary<string, AttributeValue> {{"Id", new AttributeValue("<item-id>")}},
UpdateExpression = "SET #a = #c.#a REMOVE #c",
ExpressionAttributeNames = new Dictionary<string, string> {
{"#c", "Data"},
{"#a", "Value"}
}
};
This works well for Id = 1 and 3. But does not work for 2 and 4. I assume because it can not do a SET. It does not throw any errors, but simply does not delete the Data attribute.
Is there a way to make it in a single call?
you just need a condition with your expression, to check if the attribute exist or not, thats it.
ConditionExpression ="attribute_exists (#c.#a)"
For more détails in Amazon doncs here.
For example I have a document below for collection = delivery:
{
"doc": [
{
"docid": "15",
"deliverynum": "123",
"text": "txxxxxx",
"date": "2019-07-18T12:37:58Z"
},
{
"docid": "16",
"deliverynum": "456",
"text": "txxxxxx",
"date": "2019-07-18T12:37:58Z"
},
{
"docid": "17",
"deliverynum": "999",
"text": "txxxxxx",
"date": "2019-07-18T12:37:58Z"
}
],
"id": "123",
"cancelled": false
}
is it possible to do a search with "deliverynum" = 999 and the output would be like below?
{
"doc": [
{
"docid": "17",
"deliverynum": "999",
"text": "txxxxxx",
"date": "2019-07-18T12:37:58Z"
}
],
"id": "123",
"cancelled": false
}
or should I make another Collection just for the Doc part?
I am having trouble making a query in C# for this kind of scenario.
In Mongo shell you can use the $(projection) operator:
db.collection.find({ "doc.deliverynum": "999" }, { "doc.$": 1 })
Corresponding C# code can look like below:
var q = Builders<Model>.Filter.ElemMatch(x => x.doc, d => d.deliverynum == "999");
var p = Builders<Model>.Projection.ElemMatch(x => x.doc, d => d.deliverynum == "999");
var data = Col.Find(q).Project(p).ToList();
You can also use q = Builders<Model>.Filter.Empty if you want to get all documents even if the don't contain deliverynum =``999
i am inserting json format but need to know how i can insert in this format as mention below
{
"products": [
{
"product_id": "55",
"name": "testing data",
"price": "77",
"total": "77",
"quantity": "1",
"type": "kg"
}],
],
"totals": [
{
"code": "sub_total",
"title": "Sub-Total",
"text": "Rs277.00",
"value": "277.0000",
"sort_order": "1"
}]
}
here is my code which i am trying
items local = new items();
foreach (var item in _LocalItem){
local = new items
{
name = item.name
};
}
var json = JsonConvert.SerializeObject(local);
var request = new HttpRequestMessage(HttpMethod.Post, "http://orangepotato.rjcpacking.com/index.php?route=api/login/addcustomerOrder");
request.Content = new StringContent(json);
i dont understand where i can add "products" array in json format
Simply: don't serialize an array - serialize something that has an array in a member called products:
var json = JsonConvert.SerializeObject(new { products = local });
I have following json object of array structure.I am trying to retrieve certain elements from array of objects
{
"data": [
{
"_id": "5b62dc6ebef986403db8aafd",
"name": "smitha vijaya",
"designation": "account management",
"projects": {
"project1": "description1",
"project2": "description2"
},
"age": "27"
},
{
"_id": "5b62dd17bef986403db8ab90",
"name": "JIKKU VARGHESE",
"designation": "SUPERVISING OPERATIONS MANAGER",
"projects": {
"project1": "description1",
"project2": "description2"
},
"age": "27"
},
{
"_id": "5b62dd76bef986403db8abe3",
"name": "SUJEETH NAIR",
"designation": "MENA AMS",
"projects": {
"project1": "description1",
"project2": "description2"
},
"age": "30"
},
{
"_id": "5b62ddb1bef986403db8ac13",
"name": "GIRISH KN",
"designation": "MENA AMS",
"projects": {
"project1": "description1",
"project2": "description2"
},
"age": "27"
}
]
}
I am using following c# code to extract ist name (smitha)
JsonData jsonvale = JsonMapper.ToObject( jsonString);
Name = jsonvale["data"][0]["name"].ToString();
print (name);
how can i acces other elements like name jikku and so on?
You could iterate using a for loop:
for(int i = 0; i < jsonvale.length; i++) {
JsonData jsonvale = JsonMapper.ToObject(jsonString);
Name = jsonvale["data"][i]["name"].ToString();
print(name);
}
You can iterate it over your json array like following:
JsonData jsonvale = JsonMapper.ToObject( jsonString);
for (var i=0; i<jsonvale.length; i++){
print(jsonvale["data"][i]["name"].ToString());
}
Just deserialize this json in List() and then you can access all data from this list without loops, and when you do not need this list anymore, you can destroy it. See this example https://github.com/IonCojucovschi/JsonDeserializeGenericForm
I have some problems with jobject and jarray linq query. I get this error:
Unable to cast object of type 'Newtonsoft.Json.Linq.JObject' to type 'Newtonsoft.Json.Linq.JArray'.
My code:
string fetchResult = JsonConvert.SerializeObject(sidebar, Formatting.Indented);
JObject rss = JObject.Parse(fetchResult);
var jsonModel = from item in (JArray)rss["RegistrationCase"]
select new DataList
{
RegistrationTypeName = item["RegistrationTypeName"].Value<string>(), };
If i remove (Jarray) i get: Cannot access child value on Newtonsoft.Json.Linq.JProperty.
Json, jobject: e.g: i want RegistrationTypeName, FirstName and the value of JournalNumber.
{
"Status": null,
"RegistrationCase": {
"RegistrationTypeName": " ",
"ExpireDate": null,
"PersonId": 7,
"Person": {
"FirstName": " ",
"GenderValue": 2,
"Gender": 2,
},
"UserId": 7,
"User": {
"UserName": "NO-DOM\\wme",
"LastName": null,
"Id": 7,
},
"Transactions": [],
"Comments": [],
"CustomData": [
{
"Key": "JournalNumber",
"Value": "0654-84148-00000-25",
"Id": 3,
},
{
"Key": "IsConsentGiven",
"Value": "False",
"Id": 4,
},
{
],
"FileId": null,
"File": null,
"Id": 7,
}
}
u can get these values directly like :
var RegistrationTypeName = rss["RegistrationCase"]["RegistrationTypeName"];
var FirstName = rss["RegistrationCase"]["Person"]["FirstName"];
var JournalNumber = rss["RegistrationCase"]["CustomData"][0]["Value"];