Consider a Windows Phone 7 application with a textbox and an ApplicationButton.

UI:

Backend:

The textbox is bound to a property on the backend (two way binding) and when you click the bottom button the text is saved/send/encrypted/whatever.

Now the problem is that clicking the button doesn’t do a UI –> source binding update as it would do with a normal button.

I enter the text ‘test’ on the TextBlock and IMMIDIATLY click the ApplicationButton. I don’t do anything else. This is a common user practice, he changes something and clicks the save/send/whatsoever button.

This is the result:

Check the Watch 1. As you can see the value is still null. The value is not sent to the _test value. How do we solve this?

You can add the following line to the click event handler:

So the result will look like this:

There are 3 downsides I think:

1. You need to name your TextBlock which (I think) unnecessarily clutters your scope with otherwise unused variables (that’s why we use bindings too!)
2. Your UI and ViewModel (in my case) aren’t decoupled 100% anymore. In Windows Phone 7 this is no issue though, since WP7 has no ICommand and I have to couply my UI and ViewModel anyway
3. You need to remember to write this line! Which can be quite cumbersome with a lot of application buttons.

And items in a ApplicationBar.MenuItems (ApplicationBarMenuItem) have the same problem. The UI doesn’t push the update to the ViewModel.

I hope this will be fixed in the final version, and I will post this to Microsoft Connect. If anybody has a better solution please feel free to share it.

Hi all,

I tried to display an icon in my Windows Phone 7 application:

<shell:ApplicationBarIconButton x:Name="appbar_button1" IconUri="/Images/appbar.feature.settings.rest.png" Text="Settings" />

By default, when you add an image to the solution folder it sets the build action as Resource, as shown below:

But when you run the application with the Build Action as Resource you will get a result looking like this:

While I really meant an icon looking like this:

How do we fix it?

Set the Build Action to Content!

And this is the result:

Execute this line in the CMD as Administrator (start > type ‘cmd’ > hit control+shift+enter) and paste this line (rightmousebutton > paste).

reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1

Be sure to DISABLE your Homegroup and to enable file sharing in the Network & Sharing Center

First of all, you need root. I use CyanogenMod on my Nexus One.

To delete the application you hook up the shell:

adb shell
#cd /data/app
#rm com.amazon.mp3.apk

This removes the application but does not remove the system reference.

When you go to Settings > Applications > Manage applications you still will see com.amazon.mp3

To remove that system reference do this:

abd shell
#pm uninstall com.amazon.mp3

Hope it helps.

-Kristof

So yesterday I reinstalled my laptop because some beta driver was acting up, no big deal. I had both of my partitions secured with Bitlocker (and a BIOS password set up) so that my laptop is secure.

After formatting I noticed that my C drive wasn’t encrypted anymore (which is obvious, it was formatted).

But my D drive looked like this:

It was locked. Fortunately I printed my recovery key so I was able to unlock the drive.

Please print the keys, and keep them safe!

Well not really my computer, but my girlfriend’s. It needed some updating (you know how people are, not updating & stuff).

Adobe Reader already sets 2 programs in startup. A speed launcher and another one which I am too lazy to identify. If your application is too slow then optimize it, don’t treat the symptoms.

Then our good slow friend Java. Always had their speed launcher (symptom treatment!!) in startup, but guess what also added a service.

What the f*ck? I’m moving closer and closer to not install Java on new pcs, since it’s a burdon to manage and keep up to date!

When you right click a music folder in Windows Explorer you get this:

To remove the Shop for music online link put this into a registry file and execute it:

Windows Registry Editor Version 5.00

[-HKEY_CLASSES_ROOT\SystemFileAssociations\Directory.Audio\shellex\ContextMenuHandlers\WMPShopMusic]

Using lambda functions you can shorten your event handlers.

E.g.:

With a normal event hander:

class Test
{
	private Timer timer;

	private void Timer_Elapsed(object sender, ElapsedEventArgs e)
	{
		Console.WriteLine(string.Format("Object: {0} sends: {1}", sender, e));
	}

       public Test()
	{
		this.timer = new Timer();

		this.timer.Elapsed += new ElapsedEventHandler(this.Timer_Elapsed);

		this.timer.Interval = 100;
		this.timer.Start();
	}
}

With an anonymous function:

class Test
{
	private Timer timer;

        public Test()
	{
		this.timer = new Timer();

		this.timer.Elapsed += delegate(object sender, ElapsedEventArgs e)
					 {
						 Console.WriteLine(string.Format("Object: {0} sends: {1}", sender, e));
					 };

		this.timer.Interval = 100;
		this.timer.Start();
	}
}

And with an anonymous lamba:

class Test
{
	private Timer timer;

        public Test()
	{
		this.timer = new Timer();

		this.timer.Elapsed += (sender, e) => Console.WriteLine(string.Format("Object: {0} sends: {1}", sender, e));
		//or you can explicitly type your parameters:
		this.timer.Elapsed += (object sender, ElapsedEventArgs e) => Console.WriteLine(string.Format("Object: {0} sends: {1}", sender, e));

		this.timer.Interval = 100;
		this.timer.Start();
	}
}

And with a named lamda:

class Test
{
	private ElapsedEventHandler elapsedEventHander;
        private Timer timer;

        public Test()
	{
		this.timer = new Timer();

		this.elapsedEventHander = (sender, e) => Console.WriteLine(string.Format("Object: {0} sends: {1}", sender, e));

		this.timer.Elapsed += this.elapsedEventHander;

		this.timer.Interval = 100;
		this.timer.Start();
	}
}

Which one to take? The one that suits you and your current application / case!

Sidenote: sorry for the layout, I will fix it ASAP. Fixed

For those who like to live on the edge:

Vista SP2 x64 Beta

Vista SP2 x86 Beta

Remember that there is a change when you install this on your workstation you might need to reinstall Vista if problems occurs, I AM NOT RESPONSIBLE for this.

Let’s say you are one of the gifted persons to have MSDN access.

Let’s say you use Vista 64-bit (I don’t know if the problem occurs on 32-bit).

Let’s say you want to download something from MSDN with Microsoft File Transfer Manager.

And it does not work.

Well use this workaround:

First: download the File Transfer Manager from here.

Download and install the MSI. The default path is c:\Program Files (x86)\Microsoft File Transfer Manager”. Remember this.

Then use Firefox to go to the MSDN website, start a download, and it will prompt you to do something with the default.aspx. Well open that file with the File Transfer Manager. And it works!

Woei!