C# multipart/form-data submit files and parameters
public static string PostJsonData(string url, Dictionary<string, string> dic, string imgfile)
{
string str = "";
try
{
HttpClient client = new HttpClient();
var postContent = new MultipartFormDataContent();
string boundary = ("--{0}", ("x"));
("ContentType", $"multipart/form-data, boundary={boundary}");
string image_file_Type="faceImage";
(new ByteArrayContent((imgfile)), image_file_Type, imgfile);
foreach (var key in )
{
(new StringContent(dic[key].ToString()), key);
}
HttpResponseMessage response = (url, postContent).Result;
str = ().Result;
}
catch (Exception ex)
{
("PostJsonData:" + ());
}
return str;
}C# POST multipart/form-data case
using System;
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namespace
{
/// <summary>
/// Korean picture reporting interface /// </summary>
class HanGuoLogisticsPic : ISendPackageInfo
{
public bool CheckProcessHasRun()
{
throw new NotImplementedException();
}
UserConfigInfo config = ().userConfig;
private static object _loc = new object();
private Thread DSuPicUpload;
public bool CheckTicketNumHasEffective(string ticketsNum)
{
throw new NotImplementedException();
}
public CommonResult GeneralSendTicketsNumAndPackageWeight(TicketInfo info)
{
throw new NotImplementedException();
}
public bool SendTicketsNumAndPackageWeight(string barcode, double weight, double length, double width, double height, double volume)
{
//Define the absolute path of the image //var ListImage = + @"\" + ("yyyyMMdd") + @"\" + barcode + ".jpg";
try
{
Image upload
DSuPicUpload = new Thread(() => UploadPic(barcode));
();
return true;
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error("Thread start exception," + );
return false;
}
}
public T SendTicketsNumAndPackageWeight<T>(Dictionary<string, object> packageDic)
{
throw new NotImplementedException();
}
#region Image reporting interface private void UploadPic(string barcode)
{
while (true)
{
if ( == 1)
{
//Upload the picture DoLocalImgUpload((, ("yyyyMMdd")), barcode);
DoLocalImgUpload((, (-1).ToString("yyyyMMdd")), barcode);
}
(3000);
}
}
public void DoLocalImgUpload(string picFilepath, string barcode)
{
try
{
if ((picFilepath))
{
DirectoryInfo directoryInfo = new DirectoryInfo(picFilepath);
//Pick the first 5 pictures 1 minute ago in the picture folder (sorted by creation time) //Prevent files from being occupied lock (_loc)
{
var topfiles = ().
Where(p => <= (-1)).
OrderBy(f => ).
Take(5).ToList();
// ();
(x => ).Distinct();
if ( > 0)
{
//Loop execution upload foreach (var fileInfo in topfiles)
// for (var i = 0; i < ; i++)
{
Logger<HanGuoLogisticsPic>.Debug(":" + + " fileInfo:" + );
UploadLocalByName(, barcode);
//(fileInfo);
}
();
(1000);
Logger<HanGuoLogisticsPic>.Debug("The image upload thread is uploading loop!");
}
}
}
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error(".Exception occurred when uploading the image file!", ex);
}
}
public void UploadLocalByName(string picFilepath, string barcode)
{
string url = @"/SendPackageInfo/ApiPhoto_I.asp";
try
{
Logger<HanGuoLogisticsPic>.Debug("picFilepath:" + picFilepath);
if ((picFilepath))
{
int pos = ("\\");
string name = (pos + 1);
string nums = (".jpg", "");
//string userPhoto = ;
//byte[] bytes = (picFilepath);
//userPhoto = Convert.ToBase64String(bytes);
//userPhoto = ("+", "%2B");
if (UploadImages(nums, name, picFilepath, url, barcode))
{
//Does it need to be deleted after uploading? (picFilepath);
}
}
}
catch (Exception ex)
{
Logger<HanGuoLogisticsPic>.Error(".Exception occurred when uploading the image file!", ex);
}
}
public bool UploadImages(string code, string name, string picFilepath, string url, string barcode)
{
try
{
string result = SendData(picFilepath, name, url, barcode, null, null);
var i = (result);
if (i["result"].ToString().Trim() == "true")
{
//Play sound file string strPath = (, @"config\sound") + "\\" + "";
if ((strPath))
{
sndPlayer2 = new (strPath);
();
}
else
{
Logger<HanGuoLogistics>.Error("PlaySoundSendSuccess. The sound file does not exist:" + strPath);
}
return true;
}
else
{
//Play sound file string strPath = (, @"config\sound") + "\\" + "";
if ((strPath))
{
sndPlayer2 = new (strPath);
();
}
else
{
Logger<HanGuoLogistics>.Error("PlaySoundSendSuccess. The sound file does not exist:" + strPath);
}
return false;
}
}
catch (Exception e)
{
Logger<HanGuoLogisticsPic>.Error("Uploading an image exception" + e);
}
return false;
}
public string SendData(string picFilepath, string name, string url, string barcode, string workConsole, string destination)
{
var fileContent1 = new ByteArrayContent((picFilepath));
= new ContentDispositionHeaderValue("file")
{
FileName = name
};
var postContent = new MultipartFormDataContent();
(new StringContent(barcode), "ticketsNum");
(fileContent1);//Picture File (new StringContent(workConsole), "workConsole");
(new StringContent(destination), "destination");
Logger<HanGuoLogisticsPic>.Debug("Towards"++"Send data"+(postContent));
string httpResult = GetHttpPostResponse(url, postContent);
Logger<HanGuoLogisticsPic>.Debug("take over" + + "Return data" + httpResult);
return httpResult;
}
private string GetHttpPostResponse(string url, MultipartFormDataContent postData)
{
string result = "";
//Form form format parameter transfer try
{
HttpClient client = new HttpClient();
HttpResponseMessage response = (url, postData).Result;
result = ().Result;
}
catch (Exception ex)
{
result = ;
}
Logger<HanGuoLogisticsPic>.Debug($"HanGuoLogistics Return data：{result}");
return result;
}
/// <summary>
/// Parameter reporting /// </summary>
public class ImageInfo
{
public string ticketsNum { get; set; }
public string file { get; set; }
public string workConsole { get; set; }
public string destination { get; set; }
}
/// <summary>
/// Return information /// </summary>
public class ImageResult
{
public bool result { get; set; }
public string message { get; set; }
}
#endregion
}
}The above is personal experience. I hope you can give you a reference and I hope you can support me more.