(.NET Core C#) OpenAI (ChatGTP) Retrieve File Content

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Demonstrate how to retrieve the content of a file from OpenAI. Shows how to download to a file, or instead download to a string in memory.

For more information, see https://platform.openai.com/docs/api-reference/files/retrieve-content

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

Chilkat.Http http = new Chilkat.Http();
bool success;

// Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
// This is NOT a real key.  Change the "sk-vi...." to your own key.
http.AuthToken = "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";

string file_id = "file-1H4vJq0H775gQVrjWY5jpp15";

// Download to local file.
string url = "https://api.openai.com/v1/files/{$file_id}/content";
http.SetUrlVar("file_id",file_id);

// Note: Free accounts are not able to download files.
// If using a free account, you'll receive an error response:  "To help mitigate abuse, downloading of fine-tune training files is disabled for free accounts."
success = http.Download(url,"c:/aaworkarea/mydata.jsonl");
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    Debug.WriteLine("Failed");
    return;
}

Debug.WriteLine("Downloaded OpenAI file to a local file.");

// Alternatively, download into a StringBuilder
Chilkat.StringBuilder sbData = new Chilkat.StringBuilder();
success = http.DownloadSb(url,sbData,"utf-8");
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    Debug.WriteLine("Failed");
    return;
}

Debug.WriteLine("Downloaded OpenAI file to a StringBuilder");

Debug.WriteLine("file content:");
Debug.WriteLine(sbData.GetAsString());