/// <summary>
/// Prepares multipart request data (postdata and files to upload) and
/// outputs postdata collection to request stream.
/// </summary>
public static string AddMultipartRequestData(this HttpWebRequest request, PostDataCollection postData,
IFileSystem fileSystem)
{
// get ususal postdata and files
List <PostDataField> textPostData = postData.FindAll(f => f.Type != PostDataFieldType.File);
List <PostDataField> filePostData = postData.FindAll(f => f.Type == PostDataFieldType.File);
NameValueCollection filesToUpload = ParseFilePostData(filePostData);
// set corresponding content type
request.ContentType = "multipart/form-data; boundary=" + _boundary;
// stream where we going to combine postdata and files to upload
Stream memoryStream = new MemoryStream();
byte[] result = null;
try
{
// add postdata
foreach (PostDataField field in textPostData)
{
WriteFieldToMemoryStream(memoryStream, field.Name, field.Value);
}
// write boundary after every form element's value
memoryStream.Write(_boundaryBytes, 0, _boundaryBytes.Length);
// add files
foreach (string key in filesToUpload)
{
WriteFileToMemoryStream(memoryStream, key, filesToUpload[key], fileSystem);
}
// now read everything from memory stream to buffer
memoryStream.Position = 0;
result = new byte[memoryStream.Length];
memoryStream.Read(result, 0, result.Length);
// set correct content length
request.ContentLength = result.Length;
// write buffer to request stream
Stream requestStream = request.GetRequestStream();
requestStream.Write(result, 0, result.Length);
requestStream.Close();
}
finally
{
memoryStream.Close();
}
return(Encoding.UTF8.GetString(result));
}
public void IfFormContainsDifferentInputElements_PostDataCollection_ShouldBeAbleToFilter()
{
//Arrange
string html = @"
<html>
<body>
<form id='form1' action='action' method='put'>
<input type='text' name='textbox1' value='textvalue' />
<input type='password' name='password1' value='passvalue' />
<input type='checkbox' name='checkbox1' value='checkvalue' />
<input type='radio' name='radio1' value='radiovalue' />
<input type='reset' name='reset1' value='resetvalue' />
<input type='file' name='file1' value='filevalue' />
<input type='file' name='file2' value='filevalue2' />
</form>
</body>
</html>";
HtmlFormElement form = (HtmlFormElement)HtmlElement.Create(html).ChildElements.Find("form1");
//Act
PostDataCollection postData = form.GetPostDataCollection();
// Assert
MSAssert.AreEqual("textbox1=textvalue&password1=passvalue", postData.GetPostDataString(PostDataFieldType.Text));
MSAssert.AreEqual(4, postData.Count);
MSAssert.AreEqual(2, postData.FindAll(e => (e.Type == PostDataFieldType.File)).Count());
}