C# httpclient上傳檔案

/// <summary>
/// 上傳檔案
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
[HttpPost, Route("UploadFile")]
[NonAuthorize]
public async Task<Response<string>> UploadFile(IFormFile file)
{
    if (file == null || file.Length == 0)
    {
        return ResultBuilder.FailResult("", "檔案不存在");
    }
    var requestUrl = $"{CommonConfig.ZFUrl}/special/upload/file";
    // 讀取檔案
    Stream fileStream = file.OpenReadStream();
    // 例項化multipart表單模型
    var formData = new MultipartFormDataContent();
    // 設定檔案型別表單項，使用StreamContent存放檔案流
    //檔名不能帶中文 Todo後面改成檔案id
    string encodedFileName = Uri.EscapeDataString(file.FileName);
    formData.Add(new StreamContent(fileStream), "file", encodedFileName);
    // 例項化HttpClient
    _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", CommonConfig.ZFToken);
    // 傳送請求
    HttpResponseMessage result = await _httpClient.PostAsync(requestUrl, formData);
    // 接受結果
    var responseContent = await result.Content.ReadAsStringAsync();
    _log.Info($"檔案上傳: {responseContent}");

    fileStream.Close();
    return ResultBuilder.SuccessResult("檔案上傳成功");

}

　　

file.FileName檔名不能帶中文