<%@ Page Language="C#" AutoEventWireup="true" CodeFile="img-upload.aspx.cs" Inherits="img_upload" EnableEventValidation="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<p><input id="uploadFile" type="file" runat="server" /></p>
<p>
<input id="txtFileName" type="text" runat="server" />
</p>
<p><asp:Button ID="uploadButton" runat="server" Text="Upload" OnClick="uploadButton_Click" /></p>
</form>
</body>
</html>
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<p><input id="uploadFile" type="file" runat="server" /></p>
<p>
<input id="txtFileName" type="text" runat="server" />
</p>
<p><asp:Button ID="uploadButton" runat="server" Text="Upload" OnClick="uploadButton_Click" /></p>
</form>
</body>
</html>
img-upload.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
if (uploadFile.PostedFile != null && uploadFile.PostedFile.ContentLength > 0)
{
string fileName = Path.GetFileName(uploadFile.PostedFile.FileName);
string folder = Server.MapPath("~/Files/");
Directory.CreateDirectory(folder);
uploadFile.PostedFile.SaveAs(Path.Combine(folder, fileName));
Response.Write("Uploaded: " + fileName);
}
Response.Write("OK: ");
}
}
{
if (IsPostBack)
{
if (uploadFile.PostedFile != null && uploadFile.PostedFile.ContentLength > 0)
{
string fileName = Path.GetFileName(uploadFile.PostedFile.FileName);
string folder = Server.MapPath("~/Files/");
Directory.CreateDirectory(folder);
uploadFile.PostedFile.SaveAs(Path.Combine(folder, fileName));
Response.Write("Uploaded: " + fileName);
}
Response.Write("OK: ");
}
}
Calling Code :
CookieContainer cookies = new CookieContainer();
//add or use cookies
NameValueCollection querystring = new NameValueCollection();
querystring["txtFileName"] = "testfilename";
string uploadfile;// set to file to upload
uploadfile = @"C:\google.gif";
//add or use cookies
NameValueCollection querystring = new NameValueCollection();
querystring["txtFileName"] = "testfilename";
string uploadfile;// set to file to upload
uploadfile = @"C:\google.gif";
//everything except upload file and url can be left blank if needed
string str14 = UploadFileEx(uploadfile,
"http://localhost:8052/img-upload.aspx", "uploadFile", "image/gif",
querystring, cookies);
string str14 = UploadFileEx(uploadfile,
"http://localhost:8052/img-upload.aspx", "uploadFile", "image/gif",
querystring, cookies);
public static string UploadFileEx(string uploadfile, string url,
string fileFormName, string contenttype, NameValueCollection querystring,
CookieContainer cookies)
{
if ((fileFormName == null) ||
(fileFormName.Length == 0))
{
fileFormName = "file";
}
string postdata;
postdata = "?";
if (querystring != null)
{
foreach (string key in querystring.Keys)
{
postdata += key + "=" + querystring.Get(key) + "&";
}
}
Uri uri = new Uri(url + postdata);
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
webrequest.CookieContainer = cookies;
webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
webrequest.Method = "POST";
// Build up the post message header
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append(fileFormName);
sb.Append("\"; filename=\"");
sb.Append(Path.GetFileName(uploadfile));
sb.Append("\"");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append(contenttype);
sb.Append("\r\n");
sb.Append("\r\n");
string fileFormName, string contenttype, NameValueCollection querystring,
CookieContainer cookies)
{
if ((fileFormName == null) ||
(fileFormName.Length == 0))
{
fileFormName = "file";
}
if ((contenttype == null) ||
(contenttype.Length == 0))
{
contenttype = "application/octet-stream";
}
(contenttype.Length == 0))
{
contenttype = "application/octet-stream";
}
string postdata;
postdata = "?";
if (querystring != null)
{
foreach (string key in querystring.Keys)
{
postdata += key + "=" + querystring.Get(key) + "&";
}
}
Uri uri = new Uri(url + postdata);
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
webrequest.CookieContainer = cookies;
webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
webrequest.Method = "POST";
// Build up the post message header
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append(fileFormName);
sb.Append("\"; filename=\"");
sb.Append(Path.GetFileName(uploadfile));
sb.Append("\"");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append(contenttype);
sb.Append("\r\n");
sb.Append("\r\n");
string postHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
// Build the trailing boundary string as a byte array
// ensuring the boundary appears on a line by itself
byte[] boundaryBytes =
Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
// ensuring the boundary appears on a line by itself
byte[] boundaryBytes =
Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
FileStream fileStream = new FileStream(uploadfile,
FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + fileStream.Length +
boundaryBytes.Length;
webrequest.ContentLength = length;
FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + fileStream.Length +
boundaryBytes.Length;
webrequest.ContentLength = length;
Stream requestStream = webrequest.GetRequestStream();
// Write out our post header
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
// Write out the file contents
byte[] buffer = new Byte[checked((uint)Math.Min(4096,
(int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
requestStream.Write(buffer, 0, bytesRead);
byte[] buffer = new Byte[checked((uint)Math.Min(4096,
(int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
requestStream.Write(buffer, 0, bytesRead);
// Write out the trailing boundary
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
return sr.ReadToEnd();
}
}
