I got the code below that is trying to load an image from the web into an Image control, when I run it I get an error on the given line that no network access is allowed:
private void button1_Click(object sender, RoutedEventArgs e)
{
WebClient webClientImgDownloader = new WebClient();
webClientImgDownloader.OpenReadCompleted += new OpenReadCompletedEventHandler(webClientImgDownloader_OpenReadCompleted);
webClientImgDownloader.OpenReadAsync(new Uri("http://dilbert.com/dyn/str_strip/000000000/00000000/0000000/000000/80000/5000/100/85108/85108.strip.print.gif", UriKind.Absolute));
}
void webClientImgDownloader_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(e.Result); // ERROR HERE!
image1.Source = bitmap;
}
Silverlight for Windows Phone 7
Trying to download content with WebClient will require a client access policy file to be present on the source server. For images you can avoid this requirement by doing it like this:-
private void button1_Click(object sender, RoutedEventArgs e)
{
Uri uri = new Uri("http://dilbert.com/dyn/str_strip/000000000/00000000/0000000/000000/80000/5000/100/85108/85108.strip.print.gif", UriKind.Absolute)
image1.Source = new BitmapImage(uri);
}
I see you're retrieving the image from Dilbert.com does that site have a cross domain policy file?
Silverlight doesn't support GIF only JPG, so I wrote:
www.lenniedevilliers.net/displaygif.aspx?link=http://dilbert.com/dyn/str_strip/000000000/00000000/0000000/000000/80000/5000/100/85108/85108.strip.print.gif
the displaygif.aspx page convert the GIF into a JPG.
Can you give us the full exception stack trace? the error could be that your phone emulator does not have internet access, or it could be the image on the dilbert server that does not allow anonymous requests that did not originate from their site ... so guidance on a solution will differ :-)
Related
I am trying to run SWF game in my WPF application. This game accepts some variables which should be constantly updated (about 100 times a second). I did some research and I know that basically there are 2 possibilities to run SWF in WPF:
Embed WebBrowser and pass path to the SWF file.
private void Window_Loaded(object sender, RoutedEventArgs e)
{
// fixes warning about ActiveX security
string C_Drive_local = "file://127.0.0.1/c$/";
// path of the flash file, here its in C:\DemoContent\bounce.swf
Uri swfPath = new Uri( C_Drive_local + "DemoContent/bounce.swf");
// load it in the browser
MySWFBrowser.Source = swfPath;
}
Use WindowsFormsHost to host an AxShockwaveFlash control
private void FlashLoaded(object sender, RoutedEventArgs e)
{
WindowsFormsHost formHost = new WindowsFormsHost();
AxShockwaveFlash axShockwaveFlash = new AxShockwaveFlash();
formHost.Child = axShockwaveFlash;
mainGrid.Children.Add(formHost);
string flashPath = Environment.CurrentDirectory;
flashPath += #"\game.swf";
axShockwaveFlash.Movie = flashPath;
}
I would like to try with AxShockwaveFlash since it provides methods for setting variables but in my COM objects I can not see AxInterop.ShockwaveFlashObjects.dll
I tried to install several different versions of Flash Player but without success. I cannt find any information about it. How can I get AxInterop.ShockwaveFlashObjects.dll ? What should I install to have it?
I am trying to get a simple WebClient call working from Silverlight to youtube. I lifted the code from the Microsoft Silverlight site.
Here is the code:
private void SearchTrack_Click(object sender, RoutedEventArgs e)
{
Uri serviceUri = new Uri("https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=sara+smile&key=AAAAAAAAAAAAAAA");
WebClient downloader = new WebClient();
downloader.OpenReadCompleted += new OpenReadCompletedEventHandler(downloader_OpenReadCompleted);
downloader.OpenReadAsync(serviceUri);
}
void downloader_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
if (e.Error == null)
{
Stream responseStream = e.Result;
// Continue working with responseStream here...
}
}
The call fails with the following error:
[System.Security.SecurityException] = {System.Security.SecurityException ---> System.Security.SecurityException: Security error.
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClassa.
If I just hit the URL from my browser the JSON is returned without an issue.
I am running the application from VS/Cassini so I don't think it is the FIle system problem identified at http://blogs.msdn.com/b/silverlightws/archive/2008/03/30/some-tips-on-cross-domain-calls.aspx.
Any help would be greatly appreciated.
Barry
Here it's said, that it's not possible so easy to interract with google apis from silverlight because of corssdomain access restrictions. You need to add some intermidiate WCF-service, through which Your SL-app will communicate with youtube api.
I'm running into an interesting situation. I need to access a SharePoint site asset library from both a WPF application and an Silverlight application. My Silverlight application is working 100%, but my WPF application gets a (500) Internal Server Error back from the service.
Silverlight Code:
private void Button_Click(object sender, RoutedEventArgs e)
{
ClientContext clientContext = new ClientContext("http://myfullyQualifiedName.com");
clientContext.Load(clientContext.Web);
clientContext.ExecuteQueryAsync(onQuerySucceeded, onQueryFailed);
}
private void onQuerySucceeded(object sender, ClientRequestSucceededEventArgs args)
{
}
private void onQueryFailed(object sender, ClientRequestFailedEventArgs args)
{
}
WPF Code:
private void Button_Click(object sender, RoutedEventArgs e)
{
ClientContext clientContext = new ClientContext("http://myfullyqualifiedname.com/");
//clientContext.Credentials = new NetworkCredential("UserName", "Password", "Domain");
clientContext.Load(clientContext.Web);
clientContext.ExecuteQuery();
}
I have tried with and without specifying credentials, either way I get the Internal server error.
Both Silverlight and non Silverlight Sharepoint client DLL's that I use has is version 14.4762.1000.
Now if I change the URL to one of our other sites, the WPF Code works flawlessly. So I think it must be a SharePoint settings somewhere.
Solved !! Why WPF Authentication wouldn't work when Silverlight works. (WPF was trying to use Kerberos, Silverlight was using NTLM) - Simple fix:
ClientContext _clientContext = new ClientContext(sharePointSiteUrl);
Web _web = _clientContext.Web;
_clientContext.Load(_web, website => website.Title);
_clientContext.Load(_web.Webs);
CredentialCache cc = new CredentialCache();
cc.Add(new Uri(sharePointSiteUrl), "NTLM", CredentialCache.DefaultNetworkCredentials);
_clientContext.Credentials = cc;
_clientContext.AuthenticationMode = ClientAuthenticationMode.Default;
_clientContext.ExecuteQuery();
ListCollection _listCollection = _web.Lists;
I have a zip file in my Windows Phone 7 project. I have set the Build Action to Content and Copy to output directory to Always. The zip file contains the folder structure. I want this to be copied entirely as it is in my Phone Project. I am using SharpZipLib for this. This is the code :-
Stream stremInfo = Application.GetResourceStream(new Uri("xip.zip", UriKind.Relative)).Stream;
new FastZip(). ExtractZip(stremInfo,
"",FastZip.Overwrite.Always,null,null,null,true,true);
However I get error when ExractZip is called. The exception I get is "MethodAccessException". Cannot call GetFullPath(). Can anybody let me know what am I missing? What can I do to avoid it?
You dont need to use another library if you know what files you want out of the Zip. You can use the App.GetResourceStream phone API to reach into the Zip and get the file.
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
WebClient client = new WebClient();
client.OpenReadCompleted += new OpenReadCompletedEventHandler(client_OpenReadCompleted);
client.OpenReadAsync(new Uri("http://www.foo.com/pictures.zip"));
}
void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
StreamResourceInfo info = new StreamResourceInfo(e.Result,"");
StreamResourceInfo pic = App.GetResourceStream(info, new Uri("IMG_1001.jpg", UriKind.Relative));
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(pic.Stream);
img.Source = bitmap;
}
For more informaiton on reading the list of files from th Zip check out this blog post.
Check out this utility, it may help you out.
http://www.sharpgis.net/post/2009/04/22/REALLY-small-unzip-utility-for-Silverlight.aspx
I've used the SL port of the SharpZipLib to do this - see http://slsharpziplib.codeplex.com/
There's lots of example code available for how to use it - and a good quickstart in their source - http://slsharpziplib.codeplex.com/SourceControl/changeset/view/75568#1416103
In Silverlight 4 has anyone tried to download a file using the WebClient (read or string method, does not matter) and save it to disk? (using File or FileStream class, again does not matter)
I have been trying to get this to work with no luck, for some reason the file downloads fine, while in memory the string length of it seems to match the downloaded file, yet when it gets to disk its almost twice as big and obvious corrupt :(.
To reproduce simply create a SL4 OOB applicatoin, use a WebClient to download an MP3 of your choice and save it to disk using lets say the FileStream class. If tihs works for you, please post a sample!
try this sample, in a OOB Elevated Trust Application:
private void download_Click(object sender, RoutedEventArgs e)
{
WebClient webClient = new WebClient();
webClient.OpenReadCompleted += new OpenReadCompletedEventHandler(webClient_OpenReadCompleted);
webClient.OpenReadAsync(new Uri("http://www.yourdomain.com/test.txt", UriKind.Absolute));
}
void webClient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
if ((bool)sfd.ShowDialog())
{
StreamReader sr = new StreamReader(e.Result);
string str = sr.ReadToEnd();
StreamWriter sw=new StreamWriter(sfd.OpenFile());
sw.Write(str);
}
}