Develop Reference

FileFormatException loading tons of BitmapImages

I am programming in C# and WPF and trying to load tons of images, but after about 5 seconds I'm getting Exceptions, which are not thrown directly (Visual Studio doesn't stop the program) and are logged as catched in Visual Studio.
My code looks like this:
public Dictionary<string, System.Windows.Media.Imaging.BitmapImage> images { get; private set; }
public MainWindow()
{
images = new Dictionary<string, System.Windows.Media.Imaging.BitmapImage>();
foreach (string file in Directory.GetFiles(#"C:\path\to\thumbnails"))
{
string id = Path.GetFileName(file);
id = id.Substring(0, id.Length - 4);
var image = new System.Windows.Media.Imaging.BitmapImage(new Uri(file));
image.Freeze();
images.Add(id, image);
}
InitializeComponent();
}
There are more than 8k jpg pictures in the folder, which are 44 x 64 pixels big. When running the program I see the Memory usage in Visual Studio and if there was an Exception. As mentioned before, the first 5 seconds or so are fine, but then I am getting an Exception with catch for every following picture I think. It's hard to tell because they are thrown too fast and Visual Studio displays them too slow, so they pop up in packs.
When the Exceptions start to show up, the Memory usage is rising very slowly compared to before, but if I let the program finish the loading all pictures can be displayed without problems. It also looks like Visual Studio is overwhelmed by the amount of Exceptions causing the Logger to be slower than real time. 1 second in Visual Studio seems to become 6 real time seconds and it's taking more than a minute of these "fake" seconds.
The Exception is the following (I am from Germany):
Ausnahme ausgelöst: 'System.IO.FileFormatException' in PresentationCore.dll ("Der Bitmap-Farbkontext ist ungültig.")
It looks like the picture is corrupted or has some errors, but I wasn't able to retrieve a filename and when I was, I tested the file seperately and it was okay.
I am just looking for a way to load all the images in normal speed.
Thanks in advance!
Update 1:
Somehow I disabled the "Just My Code" option in Visual Studio, causing to show exceptions outside my code and slowing Visual Studio down. Now it is running as fast as in the modification mentioned in the comments and takes about a minute to load all images.
I'm still wondering, if there is a way to load the images faster. All I am doing with them is displaying them.

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Downloadn("https://somelinkhere.com/file.txt","Init.txt");
Application.DoEvents();
List<string> links = new List<string>();
var lines = File.ReadAllLines("Init.txt"); //Code Stops and Gui Shows up after executing this code
links.Add(lines[0].Split('^')[1]);
links.Add(lines[1].Split('^')[1]);
links.Add(lines[2].Split('^')[1]);
links.Add(lines[3].Split('^')[1]);
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I wonder if an exception is being caught and swallowed somewhere, since by the sounds of it the program doesn't crash it merely skips some code. In Visual Studio, go to Debug\Exceptions, tick all the Thrown boxes and try again. If my suspicion is correct, this will identify the problem.

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i have a client server application. i want to load a font from file in my server part.
here is my code to do that. but unfortunately it will hangs on new PrivateFontCollection(); line!!!!
note that this part is running in another thread.
string fontAdd = #"C:\ETLEngine\Languages\Fonts\BNazanin.ttf";
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privateFonts.AddFontFile(fontAdd);
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Actualy I did write a console application which just do the code above, and everything works completely fine!! i got this sample code from msdn and stackoverflow, but i don't know why it doesn't work in my server side application!!! it doesn't produce an error, i set a break point on that line, and hit F10 or F11 and then its going to execute that line but never comes back to execute next line! and the thread still is in running state, not terminated or something else...! that's it!!!

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Device device = new Device( some example code I'v found);
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device.DrawUserPrimitive(..)