在asp.net core 中发送MultipartFormDataContent请求（新语 …

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using HttpClient httpClient = new();  string Boundary = new Guid().ToString().Replace("-", "");  var requestContent = new MultipartFormDataContent(Boundary);  requestContent.Headers.ContentType = MediaTypeHeaderValue.Parse($"multipart/form-data; boundary={Boundary}");  //传入文件  var fileContent = await File.ReadAllBytesAsync(@"C:\\Users\\XXXX\\Pictures\\123.jpg");  var byteArrayContent = new ByteArrayContent(fileContent);  requestContent.Add(byteArrayContent, "file", "123.jpg");   //传入token（字符串格式）  System.Net.Http.StringContent stringContent = new(token);  requestContent.Add(stringContent, "token");  //发送请求   var postResponse = await httpClient.PostAsync("https://XXXXXploadFile.do", requestContent);  //获取请求结果  this.textBox1.Text = await postResponse.Content.ReadAsStringAsync();