Azure.AI.OpenAI.Assistants SDK - Report error while trying to use File Retrieval Tool

It is about creating Assistant using chatGPT model. I use Azure.AI.OpenAI.Assistants SDK.

While trying to create an assistant using below code, it reports OpenAI Retrieval V1 tool is not supported, in favor of the more advanced v2 file_search tool.

Code Snippet:

AssistantCreationOptions aco = new AssistantCreationOptions(modelName);

aco.Tools.Add(new RetrievalToolDefinition());

aco.FileIds.AddRange(fileIds);   // This the list of files uploaded by the user i.e framework details file

aco.Instructions  = "Summarize the framework details in 10 lines";

Assistant assistant = await client?.CreateAssistantAsync(aco);

Exact error is given below

Azure OpenAI Retrieval v1 tool is not supported in favor of the more advanced v2 file_search tool. Please use \`file_search\` in the v2 api.

I need to know how to use file_search option

You will need to use the latest version of Azure.AI.OpenAI Nuget package (2.1.0-beta.1 at the time of writing this answer).

You will then create a new instance of AzureOpenAIClient. Using this, you can then work with the latest version of Assistants API.

Here's a sample code to create an assistant:

var client = new AzureOpenAIClient(new Uri("endpoint"), new DefaultAzureCredential());
var assistant = (await client.GetAssistantClient().CreateAssistantAsync(_chatCompletionAIConnectionSettings.DeploymentId, new AssistantCreationOptions()
            {
                Name = assistantName,
                Tools = { ToolDefinition.CreateFileSearch(), ToolDefinition.CreateCodeInterpreter() },
                ToolResources = 
                { 
                    FileSearch = new FileSearchToolResources()
                    {
                        NewVectorStores = { new VectorStoreCreationHelper("list of file ids")}
                    } 
                },
                Instructions = "You are a helpful assistant that answer user queries from the attached documents. "
            })).Value;