Upload large files with Dropnet #122

I'm using Dropnet in Visual Studio 2010 and I've connected my project with Dropbox. When I try to use upload with files smaller than 4MB it's ok but when the files are larger there is a problem. I've searched and found a sollution, to add this code in web.config:

system.web>
httpRuntime executionTimeout="1000" maxRequestLength="104857600"/>
/system.web>

system.webServer>
security>
requestFiltering>
requestLimits maxAllowedContentLength="104857600"/>
/requestFiltering>
/security>
/system.webServer>

So this should allow me to upload files smaller than 100MB, I've succeeded with some files around 10MB but when I try around 50MB and smaller, somehow it gets stuck, no error or anything, and no matter what number I put in maxRequestLength and maxAllowedContentLength it's still the same. Please help. My code is:

if (filMyFile.PostedFile!=null)
{
Stream stream = filMyFile.PostedFile.InputStream;
int sLen = filMyFile.PostedFile.ContentLength;
byte[] binaryData = new byte[sLen];
int n = stream.Read(binaryData, 0, sLen);
_client.UploadFile("/Folder/", filMyFile.PostedFile.FileName, binaryData);
}