(VB.NET) Prove Stateful Multi-Turn Conversation

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Note: This example requires Chilkat v11.2.0 or greater.

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Dim success As Boolean = False

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim ai As New Chilkat.Ai

' The provider can be "openai", "google", "claude", "deepseek", "xai", or "perplexity".
' Support for additional providers will be added in future versions of Chilkat.
ai.Provider = "google"

' Use your provider's API key.
ai.ApiKey = "MY_API_KEY"

' Choose a model.
ai.Model = "gemini-2.5-flash"

' Create a new conversation to be maintained locally in memory.
' If the conversation is the first to be created, it is also automatically selected.
Dim systemMsg As String = "You are a helpful assistant"
Dim developerMsg As String = ""
Dim conversationName As String = "test_conversation"
ai.NewConvo(conversationName,systemMsg,developerMsg)

' -------------------------------------------------------------------------------------------
' Our first request will establish a secret that we'll ask for in the 2nd request.
' Add a text input.
ai.InputAddText("Please remember this: The word I'll ask for later is BlubberFish.  What's the word?")

' Ask the AI for text output.
success = ai.Ask("text")
If (success = False) Then
    Debug.WriteLine(ai.LastErrorText)
    Exit Sub
End If


' Note: The inputs accumulated through one or more calls to Input* methods are cleared when the Ask method returns with success.

' Get the text response.
Dim sbResponse As New Chilkat.StringBuilder
ai.GetOutputTextSb(sbResponse)
Debug.WriteLine(sbResponse.GetAsString())
Debug.WriteLine("----")

' Sample output:

' The word is **BlubberFish**.

' -------------------------------------------------------------------------------------------
' Let's ask for the word. If this is a stateful conversation, the AI should respond correctly.
ai.InputAddText("OK, I'm going to ask you again, what's the word?")
success = ai.Ask("text")
If (success = False) Then
    Debug.WriteLine(ai.LastErrorText)
    Exit Sub
End If


' Get the text response.
sbResponse.Clear()
ai.GetOutputTextSb(sbResponse)
Debug.WriteLine(sbResponse.GetAsString())

' Sample output:

' The word is **BlubberFish**.

' -------------------------------------------------------------------------------------------
' Look at the conversation so far...
' 
Dim json As New Chilkat.JsonObject
ai.ExportConvo(conversationName,json)
json.EmitCompact = False
Debug.WriteLine(json.Emit())

' Note: The conversation transcript format exported and imported by Chilkat is always the OpenAI format,
' regardless of the AI provider.  (Chilkat translates the format from OpenAI to whatever is needed by the actual AI provider being used.)

' {
'   "input": [
'     {
'       "role": "system",
'       "content": [
'         {
'           "type": "input_text",
'           "text": "You are a helpful assistant"
'         }
'       ]
'     },
'     {
'       "role": "user",
'       "content": [
'         {
'           "type": "input_text",
'           "text": "Please remember this: The word I'll ask for later is BlubberFish.  What's the word?"
'         }
'       ]
'     },
'     {
'       "role": "assistant",
'       "content": [
'         {
'           "type": "output_text",
'           "text": "The word is **BlubberFish**."
'         }
'       ]
'     },
'     {
'       "role": "user",
'       "content": [
'         {
'           "type": "input_text",
'           "text": "OK, I'm going to ask you again, what's the word?"
'         }
'       ]
'     },
'     {
'       "role": "assistant",
'       "content": [
'         {
'           "type": "output_text",
'           "text": "The word is **BlubberFish**."
'         }
'       ]
'     }
'   ]
' }

' -------------------------------------------------------------------------------------------
' If we unselect the conversation, so that no conversation is selected,
' then the same query results in the AI not knowing the word.

ai.SelectedConvo = ""

ai.InputAddText("OK, I'm going to ask you again, what's the word?")
success = ai.Ask("text")
If (success = False) Then
    Debug.WriteLine(ai.LastErrorText)
    Exit Sub
End If


' Get the text response.
sbResponse.Clear()
ai.GetOutputTextSb(sbResponse)
Debug.WriteLine(sbResponse.GetAsString())

' Sample output:

' I apologize, but I don't have the context of our previous interaction or what "the word" you're referring to might be.
' Could you please remind me or provide the clue again? I'm ready to help you figure it out!