Issue with adding start and end tag to JSON string

Question

1.00/5 (1 vote)

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I would like to transform JSON string below:

[{
"secTypeCd": "SWAPIRS"
},
{
"swapTenor": "10Y"
}]


To get this XMl construct:

<envelope><sectypecd>SWAPIRS<swaptenor>10Y<effectivedate>2017-02-27<envelope>

What I have tried:

I have tried this:

xml = JsonConvert.DeserializeXmlNode("{\"envelope\":" + JSONstring + "}", "envelope");

Posted 20-Jun-21 3:22am

Member 15254125

Updated 30-Jun-21 21:37pm

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Mr.Duy09 · Answer 1 · 2021-06-30T21:37:00

For you!
Step 1. Convert Your data from DB to Object
Step 2: Declare Object with "Key" and "Value" (Try Dictionary if you want) and push your data to list Object
Step 3: Using String Builder and Json convert
Step 4: Using XmlWriter to convert your data list to XML file

public class KeyValues
   {
       public string Key { get; set; }
       public string Value { get; set; }
   }
   class Program
   {
       static void Main(string[] args)
       {
           //Initial Data
           List<KeyValues> lst = new List<KeyValues>();
           var usr1 = new KeyValues
           {
               Key = "secName",
               Value = "USD 0f10Y Pay Fixed - 27/02/2017",
           };

           var usr2 = new KeyValues
           {
               Key = "secTypeCd",
               Value = "SWAPIRS",
           };
           var usr3 = new KeyValues
           {
               Key = "swapTenor",
               Value = "10Y",
           };
           lst.Add(usr1);
           lst.Add(usr2);
           lst.Add(usr3);

           //Convert List Data Object To JSON
           string strserialize = JsonConvert.SerializeObject(lst);
           JArray jArray = JArray.Parse(strserialize);
           StringBuilder finalResult = new StringBuilder("{");
           foreach (JObject keys in jArray)
           {
               finalResult.Append("'" + keys["Key"] + "'" + ":" + "'" + keys["Value"] + "'" + ",");
           }
           finalResult.Remove(finalResult.Length - 1, 1);
           finalResult.Append("}");

           JObject finalResultToArr = JObject.Parse(finalResult.ToString());
           Console.WriteLine(finalResultToArr);

           Dictionary<string, string> dictObj = finalResultToArr.ToObject<Dictionary<string, string>>();
           var lstKey = dictObj.Keys;

           //Convert List Data Object to XML File
           using (XmlWriter writer = XmlWriter.Create("C:/Data/develop.xml"))
           {
               writer.WriteStartElement("develop");
               foreach (var key in lstKey)
               {
                   writer.WriteElementString(key.ToString(), finalResultToArr[key].ToString());
               }
               writer.WriteEndElement();
               writer.Flush();
           }
       }
   }

Mr.Duy09 · Answer 2 · 2021-06-23T23:53:00

Solution 1

Hey my friend,
Try this one:

static void Main(string[] args)
       {
           string jsonString = @"[{'secTypeCd':'SWAPIRS'}, {'swapTenor':'10Y'}, {'effectivedate':'2017-02-27'}]";

           var wrappedDocument = string.Format("{{ item: {0} }}", jsonString);
           // To convert JSON text contained in string json into an XML node
           var xDocument = JsonConvert.DeserializeXmlNode(wrappedDocument, "envelope");

           // To convert an XML node contained in string xml into a JSON string
           string jsonText = JsonConvert.SerializeXmlNode(xDocument);


           Console.WriteLine(jsonText);
       }

Posted 23-Jun-21 23:53pm

Mr.Duy09

Comments

Member 15254125 24-Jun-21 7:44am

Hi Nguyen,

I have tried your way to add tags before serializing the dictionary of data table rows (which contains tag in column 1 and element value in column 2); It throwed the same error.

To explain the problem in full:

I have a datatable whose rows has (XML tags in column 1 and XML Element value in column 2).

My task is to convert the datatable into JSON string with complete hierarchy intact between parent and child nodes. The same JSON string can then be deserialized to well formed XML.

Mr.Duy09 25-Jun-21 5:37am

You mean like that, my Friend?
Table
|Name|Value|
|secTypeCd|SWAPIRS|
|swapTenor|10Y|
|effectivedate|2017-02-27

You want to convert Json like that:
{
"secTypeCd": "SWAPIRS",
"swapTenor": "10Y",
"effectivedate": "2017-02-27"
}
and the XML?:

<envelope>
<sectypecd>SWAPIRS
<swaptenor>10Y
<effectivedate>2017-02-27