反斜線造成Client端收到參數，反序列化JSON失敗

API回傳JSON字串到Client端時(c#接收)，
會因為多餘的反斜線造成Client端收到時，反序列化JSON失敗，
只要將API回傳參數改為HttpResponseMessage物件就可以

圖片來源Designed by Freepik

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程式碼如下

1. 回傳改為HttpResponseMessage物件

#region 取得設定
[Route("api/GetIDList/")]
[HttpGet]
public HttpResponseMessage GetIDList()
{
  HttpResponseMessage httpResponseMessage = Request.CreateResponse(HttpStatusCode.OK);
  httpResponseMessage.Content = new StringContent(sJsonString, System.Text.Encoding.UTF8, "application/json");
  return httpResponseMessage;
}
#endregion