使用WebBrowser实例从C＃-WinForm通过POST上传文件？
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我想使用.net 2.0从浏览器窗口（或WebBrowser-instance）中的C＃WinForm应用程序中进行POST到PHP站点，我需要正确获取数据和headers-argments。喜欢：
webBrowser1.Navigate(\"http://mypublishservice.com/publish_picture.php\",\"_SELF\",X,Y);
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">
</head>
<body>
<div>
<form enctype=\"multipart/form-data\" action=\"http://mypublishservice.com/publish_picture.php\" method=\"POST\">
Please choose a photo:
<input name=\"source\" type=\"file\"><br/><br/>
Say something about this photo:
<input name=\"message\" type=\"text\" value=\"\"><br/><br/>
<input type=\"submit\" value=\"Upload\"/><br/>
</form>
</div>
</body>
</html>
public static byte[] PrepareUploadFiles(string address, IEnumerable<UploadFile> files, NameValueCollection values, out string header)
{
using (var requestStream = new MemoryStream())
{
var boundary = \"---------------------------\" + DateTime.Now.Ticks.ToString(\"x\"); //, NumberFormatInfo.InvariantInfo);
header = \"multipart/form-data; boundary=\" + boundary;
var boundaryBuffer2 = Encoding.ASCII.GetBytes(header);
requestStream.Write(boundaryBuffer2, 0, boundaryBuffer2.Length);
boundary = \"--\" + boundary;
// Write the values
foreach (string name in values.Keys)
{
var buffer = Encoding.ASCII.GetBytes(boundary + Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.ASCII.GetBytes(string.Format(\"Content-Disposition: form-data; name=\\\"{0}\\\"{1}{1}\", name, Environment.NewLine));
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.UTF8.GetBytes(values[name] + Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
}
// Write the files
foreach (var file in files)
{
var buffer = Encoding.ASCII.GetBytes(boundary + Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.UTF8.GetBytes(string.Format(\"Content-Disposition: form-data; name=\\\"{0}\\\"; filename=\\\"{1}\\\"{2}\", file.Name, file.Filename, Environment.NewLine));
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.ASCII.GetBytes(string.Format(\"Content-Type: {0}{1}{1}\", file.ContentType, Environment.NewLine));
requestStream.Write(buffer, 0, buffer.Length);
CopyStream(file.Stream, requestStream); // file.Stream.CopyTo(requestStream);
buffer = Encoding.ASCII.GetBytes(Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
}
var boundaryBuffer = Encoding.ASCII.GetBytes(boundary + \"--\");
requestStream.Write(boundaryBuffer, 0, boundaryBuffer.Length);
return requestStream.ToArray();
}
}
public static void CopyStream(Stream input, Stream output)
{
byte[] buffer = new byte[32768];
while (true)
{
int read = input.Read(buffer, 0, buffer.Length);
if (read <= 0)
return;
output.Write(buffer, 0, read);
}
}
public void Upload()
{
using (var stream1 = File.Open(Support.EXAMPLEIMAGE, FileMode.Open))
{
var files = new[]
{
new UploadFile
{
Name = \"source\", // 1
Filename = Support.EXAMPLEIMAGE,
ContentType = \"image/jpeg\", // 2
Stream = stream1
}
};
var values = new NameValueCollection
{
{ \"message\", \"a text\" } // 3
};
string contentType; // 4. do I need it
byte[] dataToPost = Support.PrepareUploadFiles(Support.URL, files, values, out contentType); // 5. out contentType = what should be the result vaule?
//PrepareUploadFiles(url, files, values, out contentType);
webBrowser1.Navigate(Support.URL, null, dataToPost, \"Content-Type: \" + contentType + Environment.NewLine);
}
}
没有找到相关结果
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1 个回复
长拳
现在，由于您正在尝试上传文件，因此这将变得有些困难。我写了一篇博客文章，阐述了如何生成允许上传多个文件的“ 4”请求。因此，您可以调整此处显示的UploadFiles方法，使其仅返回POST正文，而不进行实际的上传，然后执行以下操作：