Create and Deserialize a JSON Array

The example below explains how to use activities such as Invoke Code and Deserialize Json Array to create a JSON array, deserialize it, and provide the list of extracted tokens. You can find these activities in the UiPath.WebAPI.Activities package.

This is how the automation process can be built:

1. Open Studio and create a new Process.
2. Drag a Sequence container in the Workflow Designer.

3. Create the following variables:

   Variable Name	Variable Type	Default Value
   jsonAsString	String
   jsonAsArray	JArray

4. Add an Invoke Code activity inside the Sequence.

   • Click the Edit Code button and add the following code in the opened window:

     Dim obj As ArrayList = New ArrayList()
     obj.Add("Starcraft")
     obj.Add("DOTA 2")
     obj.Add("FarCry")
     Out = JsonConvert.SerializeObject(obj)

   • Once the code is added, click the OK button.

   • Click the Edit Arguments button and add the following argument:

     Argument	Direction	Type	Value
     out	Out	String	jsonAsString

   • Once finished, select the OK button like in the below GIF:

     
     

     

     
     

5. Add a Log Message activity below the Invoke Code activity.

   • Add the expression "JSON As String: "+jsonAsString in the Message field.

6. Add a Deserialize Json Array activity below the Log Message activity.

   • Add the variable jsonAsString in the Json String field.
   • In the Properties panel, add the variable jsonAsArray in the JsonArray field.

7. Add a For Each activity below the Deserialize Json Array activity.

   • Add the value token in the ForEach field.
   • Add the variable jsonAsArray in the VB expression field.
   • In the Properties panel, in the TypeArgument field, make sure you chose JValue.

8. Add a Log Message activity inside the Body of the For Each activity.

   • Add the expression token.ToString in the Message field.

     This is how the workflow should look:

     
     

     

     
     
9. Run the process. A JSON array is created, deserialized as a String and provided as a list of extracted tokens.

Here you can download an example.