Develop Reference

Header JSON Converting CSV to JSON

Hi im tring to convert CSV String to JSON, but the Header of the JSON has some issues with Encode i think.
Here the code and the Output:
[{...
"Endere_o_4": "",
"Endere_o_5": "",
"Endere_o_6": "",
"C_digo_Postal": "1000-045", ...]}
Expected Result: [{...
"Endereço_4": "",
"Endereço_5": "",
"Endereço_6": "",
"Código_Postal": "1000-045", ...]}
public void MssCSVtoJSON(string ssCSV, out string ssJSON)
{
ssJSON = "";
ChoCSVFileHeaderConfiguration headerConfiguration = new ChoCSVFileHeaderConfiguration(null, new System.Globalization.CultureInfo("pt-PT"));
ChoCSVRecordConfiguration config = new ChoCSVRecordConfiguration();
config.FileHeaderConfiguration = headerConfiguration;
StringBuilder sb = new StringBuilder();
using (var p = ChoCSVReader.LoadText(ssCSV,Encoding.Unicode, config, null).WithFirstLineHeader()) {
using (var w = new ChoJSONWriter(sb)) {
w.Configuration.Encoding = Encoding.Unicode;
w.Write(p);
}
}
ssJSON = sb.ToString();
// TODO: Write implementation for action
} // MssCSVtoJSON

It is known issue, put a fix and pushed ChoETL 1.1.0.5-alpha2 nuget package.
Here is working sample
string csv = #"Endereço_4, Endereço_5
1, 11
2, 22";
StringBuilder output = new StringBuilder();
using (var r = ChoCSVReader.LoadText(csv).WithFirstLineHeader())
{
using (var w = new ChoJSONWriter(output))
w.Write(r);
}
Console.WriteLine(output);
Output:
[
{
"Endereço_4": "1",
"Endereço_5": "11"
},
{
"Endereço_4": "2",
"Endereço_5": "22"
}
]

c# convert json string to .csv

I am trying to convert a json string, containing array elements, to a .csv file. Below is the json string format:
{"inputFile": [["Column1", "Column2", "Column3", "Column4", "Column5", "Column6", "Column7", "Column8", "Column9", "Column10"], ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J"], ["K", "L", "M", "N", "O", "P", "Q", "R", "S", "T"]]}
solved. Thanks heyNow.
dynamic dynObj = JsonConvert.DeserializeObject(json);
var rowElements = new List<string>();
foreach (var data in dynObj.inputFile)
{
var row = new List<string>();
foreach (var dataItem in data)
{
var item = Convert.ToString(dataItem);
row.Add(item);
}
rowElements.Add( String.Join(",", row)+"\n");
}
var CSV = String.Join("",rowElements);
Console.WriteLine(CSV);
For RaJN:
Updated code to replace json file path to json string:
StringBuilder msg = new StringBuilder();
using (var p = ChoJSONReader.LoadText(jsonString)
.WithJSONPath("$.inputFile[*]")
)
{
using (var w = new ChoCSVWriter(msg))
{
w.Write(p);
}
Console.WriteLine(msg.ToString());
}

try with newtonsoft jsonparser.
If you can get your JSON as a string..
dynamic dynObj = JsonConvert.DeserializeObject(jsonString);
string CSV = "";
foreach (var data in dynObj.inputFile)
{
List<string> row = new List<string>();
foreach(var dataItem in data)
{
row.Add(dataItem);
}
CSV+=string.Join(row, ",");
}
You will get 1 giant string containing all the values as a CSV.
Let us know if this is what you want.

Here is how you can generate CSV from your JSON file using Cinchoo ETL
StringBuilder msg = new StringBuilder();
using (var p = new ChoJSONReader("*** YOUR JSON FILE PATH ***")
.WithJSONPath("$.inputFile[*]")
)
{
using (var w = new ChoCSVWriter(msg))
{
w.Write(p);
}
Console.WriteLine(msg.ToString());
}
Output:
Column1,Column2,Column3,Column4,Column5,Column6,Column7,Column8,Column9,Column10
A,B,C,D,E,F,G,H,I,J
K,L,M,N,O,P,Q,R,S,T
UPDATE:
string json = #"
{
""inputFile"": [
[""Column1"", ""Column2"", ""Column3"", ""Column4"", ""Column5"", ""Column6"", ""Column7"", ""Column8"", ""Column9"", ""Column10""],
[ ""A"", ""B"", ""C"", ""D"", ""E"", ""F"", ""G"", ""H"", ""I"", ""J"" ],
[ ""K"", ""L"", ""M"", ""N"", ""O"", ""P"", ""Q"", ""R"", ""S"", ""T"" ]
]
}";
StringBuilder msg = new StringBuilder();
using (var p = ChoJSONReader.LoadText(json)
.WithJSONPath("$.inputFile[*]")
)
{
using (var w = new ChoCSVWriter(msg))
{
w.Write(p);
}
Console.WriteLine(msg.ToString());
}

C# Convert Json to CSV

I have a json file in the following format:
{
"HDRDTL":["SRNO","STK_IDN","CERTIMG"],
"PKTDTL":[
{"SRNO":"2814","STK_IDN":"1001101259","CERTIMG":"6262941723"},
{"SRNO":"2815","STK_IDN":"1001101269","CERTIMG":"6262941726"},
{"SRNO":"2816","STK_IDN":"1001101279","CERTIMG":"6262941729"}
],
"IMGTTL":
["CERTIMG","ARRIMG"],
"IMGDTL":{"CERTIMG":"CRd6z2uq3gvx7kk","ARRIMG":"ASd6z2uq3gvx7kk"}
}
The "PKTDTL" array is the part I need to convert to csv.
How can I achieve this in C# ?
Note, as an example, I only have 3 items in the "PKTDTL", the real json file has thousands of lines of ({"SRNO" ...}) and is huge.
I have written following code which does not work. see error message commented in the code.
Question
Anyone knows why it failed ?
Do you have a better/alternative method
public static void ConvertJsonToCSV(string InFile)
{
string OutFile=InFile.Replace("json","csv");
StreamReader sInFile = new StreamReader(InFile);
StreamWriter sOutFile = new StreamWriter(OutFile);
using (sInFile)
{
string sJson = sInFile.ReadToEnd();
//*************************************************************
// the below line failed, error message: unexpected json token
// when reading datatable, expected startArray, got StartObject.
//**************************************************************
DataTable dt = JsonConvert.DeserializeObject<DataTable>(sJson);
//DataTable dt = JsonConvert.DeserializeAnonymousType(sJson, new { Makes = default(DataTable) }).Makes;
var sb = new StringBuilder();
string[] columnNames = (from dc in dt.Columns.Cast<DataColumn>()
select dc.ColumnName).ToArray();
sb.AppendLine(string.Join(",", columnNames));
foreach (DataRow dr in dt.Rows)
{
foreach (object field in dr.ItemArray)
{
sb.Append(field.ToString().Replace(",", "") + ",");
}
sb.Replace(",", "\n", sb.Length - 1, 1);
}
sOutFile.Write(sb.ToString());
sOutFile.Close();
sInFile.Close();
}
}

With Cinchoo ETL - an open source library, you can do do the conversion easily with few lines of code
string json = #"{
""HDRDTL"":[""SRNO"",""STK_IDN"",""CERTIMG""],
""PKTDTL"":[
{""SRNO"":""2814"",""STK_IDN"":""1001101259"",""CERTIMG"":""6262941723""},
{""SRNO"":""2815"",""STK_IDN"":""1001101269"",""CERTIMG"":""6262941726""},
{""SRNO"":""2816"",""STK_IDN"":""1001101279"",""CERTIMG"":""6262941729""}
],
""IMGTTL"":
[""CERTIMG"",""ARRIMG""],
""IMGDTL"":{""CERTIMG"":""CRd6z2uq3gvx7kk"",""ARRIMG"":""ASd6z2uq3gvx7kk""}
}";
StringBuilder sb = new StringBuilder();
using (var p = ChoJSONReader.LoadText(json).WithJSONPath("$..PKTDTL")
)
{
using (var w = new ChoCSVWriter(sb)
.WithFirstLineHeader()
)
w.Write(p);
}
Console.WriteLine(sb.ToString());
Output:
SRNO,STK_IDN,CERTIMG
2814,1001101259,6262941723
2815,1001101269,6262941726
2816,1001101279,6262941729
Checkout CodeProject article for some additional help.
Disclaimer: I'm the author of this library.

I found myself in similar situation. this is what i did. first I created a JObject (using Newtonsoft.Json.Linq) let us consider that your json is in a string variable called "strJSON".
JObject jsonObj= JObject.parse(strJSON);
JObject PKTDL=jsonObj["PKTDTL"] as JObject;
IList<string> keys = PKTDL.Properties().Select(p => p.Name).ToList(); // this gives column names
StringBuilder sb=new StringBuilder();
string headers="";
foreach(string key in keys)
{
headers+=","+key;
}
sb.AppendLine(headers.TrimStart(','));
foreach(JObject j in jsonObj["PKTDTL"]) //if jobject doesnt work try "JToken j"
{
string values="";
foreach(string key in keys)
{
values+=","+jsonObj["PKTDTL"][key];
}
sb.AppendLine(values.TrimStart(','));
}
File.WriteAllText(filePath, sb.ToString());
then save sb as a csv

Similar question to duplicate (see the JsonToCsv(string, string) method there). If you are already using NewtonSoft Json.NET and CsvHelper you can do similar conversion with the help of ExpandoObject.
var jsonText = #"{
""HDRDTL"":[""SRNO"",""STK_IDN"",""CERTIMG""],
""PKTDTL"":[
{""SRNO"":""2814"",""STK_IDN"":""1001101259"",""CERTIMG"":""6262941723""},
{""SRNO"":""2815"",""STK_IDN"":""1001101269"",""CERTIMG"":""6262941726""},
{""SRNO"":""2816"",""STK_IDN"":""1001101279"",""CERTIMG"":""6262941729""}
],
""IMGTTL"":
[""CERTIMG"",""ARRIMG""],
""IMGDTL"":{""CERTIMG"":""CRd6z2uq3gvx7kk"",""ARRIMG"":""ASd6z2uq3gvx7kk""}
}";
var jtoken = JObject.Parse(jsonText).SelectToken("$..PKTDTL");
var expandos = jtoken.ToObject<ExpandoObject[]>();
string csvText;
using (var writer = new StringWriter())
{
using (var csv = new CsvWriter(writer))
{
csv.WriteRecords(expandos as IEnumerable<dynamic>);
}
csvText = writer.ToString();
}
Console.WriteLine(csvText);

Parse dynamic json as simple as possible

I am not much of a C# Programmer so I am fairly new to this, I would like to parse the sample JSON below, I have been using the code:
WebClient client = new WebClient();
string getString = client.DownloadString(url);
dynamic j = JsonConvert.DeserializeObject(getString);
var k = j.rgDescriptions;
dynamic m = JsonConvert.DeserializeObject(k);
foreach (var c in m.descriptions)
{
Console.WriteLine(c);
}
I get error in deserialize of k, I am not sure if I am at the right path though. How do I get the "classid" w/o getting the value of their parent, because it is dynamic and not named, it is a Unique ID.
{
"success": true,
"rgDescriptions": {
"671219543": {
"id": "671219543",
"classid": "253033065",
"instanceid": "93973071",
"amount": "1",
"pos": 274
},
"707030894": {
"id": "707030894",
"classid": "166354998",
"instanceid": "0",
"amount": "1",
"pos": 277
},
Update:
I used this code:
WebClient client = new WebClient();
string getString = client.DownloadString(url);
var jo = JObject.Parse(getString);
var data = (JObject)jo["rgDescriptions"];
foreach (var item in data)
{
Console.WriteLine("{0}: {1}", item.Key, item.Value);
}
I could get what I wanted now, but I need to parse each value. Is there a better way?

You could use JSON.NET and JSONPath to query the incoming JSON, examples here and here
The code below extracts every classid for each object in rgDescriptions
//...
WebClient client = new WebClient();
string getString = client.DownloadString(url);
var obj = JObject.Parse(getString);
var classIds = obj.SelectTokens("$.rgDescriptions.*.classid").Select(x => x.Value<string>()).ToList(); //[253033065,166354998]
//Class ID Where...
var idToSearch = "671219543";
var classId = obj.SelectToken("$.rgDescriptions['" + idToSearch + "']..classid").Value<string>();
//...

Parsing a JSON array using Json.Net

I'm working with Json.Net to parse an array. What I'm trying to do is to pull the name/value pairs out of the array and assign them to specific variables while parsing the JObject.
Here's what I've got in the array:
[
{
"General": "At this time we do not have any frequent support requests."
},
{
"Support": "For support inquires, please see our support page."
}
]
And here's what I've got in the C#:
WebRequest objRequest = HttpWebRequest.Create(dest);
WebResponse objResponse = objRequest.GetResponse();
using (StreamReader reader = new StreamReader(objResponse.GetResponseStream()))
{
string json = reader.ReadToEnd();
JArray a = JArray.Parse(json);
//Here's where I'm stumped
}
I'm fairly new to JSON and Json.Net, so it might be a basic solution for someone else. I basically just need to assign the name/value pairs in a foreach loop so that I can output the data on the front-end. Has anyone done this before?

You can get at the data values like this:
string json = #"
[
{ ""General"" : ""At this time we do not have any frequent support requests."" },
{ ""Support"" : ""For support inquires, please see our support page."" }
]";
JArray a = JArray.Parse(json);
foreach (JObject o in a.Children<JObject>())
{
foreach (JProperty p in o.Properties())
{
string name = p.Name;
string value = (string)p.Value;
Console.WriteLine(name + " -- " + value);
}
}
Fiddle: https://dotnetfiddle.net/uox4Vt

Use Manatee.Json
https://github.com/gregsdennis/Manatee.Json/wiki/Usage
And you can convert the entire object to a string, filename.json is expected to be located in documents folder.
var text = File.ReadAllText("filename.json");
var json = JsonValue.Parse(text);
while (JsonValue.Null != null)
{
Console.WriteLine(json.ToString());
}
Console.ReadLine();

I know this is about Json.NET but times are a-changing so if anybody stumbles here while using .NET Core/5+ System.Text.Json please don't despair because
Try the new System.Text.Json APIs from .NET Blog show an example of this.
[
{
"date": "2013-01-07T00:00:00Z",
"temp": 23,
},
{
"date": "2013-01-08T00:00:00Z",
"temp": 28,
},
{
"date": "2013-01-14T00:00:00Z",
"temp": 8,
},
]
...
using (JsonDocument document = JsonDocument.Parse(json, options))
{
int sumOfAllTemperatures = 0;
int count = 0;
foreach (JsonElement element in document.RootElement.EnumerateArray())
{
DateTimeOffset date = element.GetProperty("date").GetDateTimeOffset();
(...)