"No imaging component suitable to complete this operation was found."

I have programmed an application that it needs to download *.png files and set it into the background of the button in WPF. So, when i run this program, it faces the Error as

No imaging component suitable to complete this operation was found."

My code is as below :

First application downloads the file with WebClient class's object:

System.Net.WebClient wClient = new System.Net.WebClient();
Uri downloadUri = new Uri(MyUri, UriKind.Absolute);
wClient.DownloadFileAsync(downloadUri, "MyImage.png");
wClient.DownloadFileCompleted += new System.ComponentModel.AsyncCompletedEventHandler(wClient_DownloadFileCompleted);

and when download completed event occurred:

ImageBtn.Dispatcher.Invoke(new Action(() =>
{
    ImageBrush ib = new ImageBrush();
    BitmapImage bi = new BitmapImage();
    bi.BeginInit();
    bi.UriSource = new Uri("MyImage.png", UriKind.Relative);
    bi.EndInit();

    ib.ImageSource = bi;
    ImageBtn.Background = ib;
}

NOTE Because of run these blocks of codes in BackgroundWorker, I use Dispatcher to set button Background property

So, when i run the program, System.NotSupportedException occurred as below :

Exception from HRESULT: 0x88982F50 Error Code : -2003292336 Message : No imaging component suitable to complete this operation was found. Source : PresentationCore Stack Trace : at System.Windows.Media.Imaging.BitmapDecoder.SetupDecoderFromUriOrStream(Uri uri, Stream stream, BitmapCacheOption cacheOption, Guid& clsId, Boolean& isOriginalWritable, Stream& uriStream, UnmanagedMemoryStream& unmanagedMemoryStream, SafeFileHandle& safeFilehandle) at System.Windows.Media.Imaging.BitmapDecoder.CreateFromUriOrStream(Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, RequestCachePolicy uriCachePolicy, Boolean insertInDecoderCache) at System.Windows.Media.Imaging.BitmapImage.FinalizeCreation() at System.Windows.Media.Imaging.BitmapSource.CompleteDelayedCr开发者_如何学Pythoneation()

at System.Windows.Media.Imaging.BitmapSource.get_WicSourceHandle()

at System.Windows.Media.Imaging.BitmapSource.get_DUCECompatiblePtr()

at System.Windows.Media.Imaging.BitmapSource.UpdateBitmapSourceResource(Channel channel, Boolean skipOnChannelCheck) at System.Windows.Media.Imaging.BitmapSource.AddRefOnChannelCore(Channel channel) at System.Windows.Media.Imaging.BitmapSource.System.Windows.Media.Composition.DUCE.IResource.AddRefOnChannel(Channel channel) at System.Windows.Media.ImageBrush.AddRefOnChannelCore(Channel channel)

at System.Windows.Media.Brush.System.Windows.Media.Composition.DUCE.IResource.AddRefOnChannel(Channel channel) at System.Windows.Media.RenderData.System.Windows.Media.Composition.DUCE.IResource.AddRefOnChannel(Channel channel) at System.Windows.UIElement.RenderContent(RenderContext ctx, Boolean isOnChannel) at System.Windows.Media.Visual.UpdateContent(RenderContext ctx, VisualProxyFlags flags, Boolean isOnChannel) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.UpdateChildren(RenderContext ctx, ResourceHandle handle) at System.Windows.Media.Visual.RenderRecursive(RenderContext ctx) at System.Windows.Media.Visual.Render(RenderContext ctx, UInt32 childIndex) at System.Windows.Media.CompositionTarget.Compile(Channel channel) at System.Windows.Media.CompositionTarget.System.Windows.Media.ICompositionTarget.Render(Boolean inResize, Channel channel) at System.Windows.Media.MediaContext.Render(ICompositionTarget resizedCompositionTarget) at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window) at WPF_KSMMessenger.App.Main() in C:\Users\Hossein\Desktop\WPF_KSMMessenger\WPF_KSMMessenger\obj\x86\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

What should I do to solve this problem?

Thanks for your attention.

.png files with a zero file size will give this identical error.

Your code works fine for me on a random image selected from Google images, so my guess is that the image you are downloading has an issue of some sort. You can try the following code in the handler right before Dispatcher.Invoke.

var encoder = new PngBitmapEncoder();
var image = new BitmapImage( new Uri( "MyImage.png", UriKind.Relative ) );
encoder.Frames.Add( BitmapFrame.Create( image ) );

using ( var stream = new FileStream( "MyImage2.png", FileMode.Create, FileAccess.Write ) )
{
    encoder.Save( stream );
}

Then use "MyImage2.png" instead. It is an attempt to have the encoder "fix" the image before loading it into the brush. To be honest, while this code works for me, I almost didn't post this because I have no idea if it will work for your situation, and I don't like posting code when I don't know the result. Definitely let me know if it helps.