Install dropbox on ubuntu

1. Download the deb file from: https://linux.dropbox.com/packages/ubuntu/dropbox_1.6.0_i386.deb 2. Install the dependences: apt-get -f install -f python-gtk2 libatk1.0-0 libcairo2 libpan go1.0-0 python-cairo python-gobject-2 libgdk-pixbuf2.0-0 libatk1.0-data libx11-6 libxcb-render0 libxcb-shm0 libxcb1 libxrender1 libjasper1 libjpeg8 libtiff4 lib gdk-pixbuf2.0-common libthai0 libxft2 libgtk2.0-0 libpixman-1-0 libjpeg-turbo8 libthai-data libdatrie1 libx11-data libxau6 libxdmcp6 libgtk2.0-common libxcompo site1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxinerama1 libxrandr2 hicolor-icon-theme libgtk2.0-bin

Improve perfrormance of WP7 multiple IsolatedStorageFile.ExistDirectory calls

In my new project, I need to check the isolated storage to get if the Directory is exist, but if the directories have the same parent directory, we can first call isf.GetDirectoryNames(Path.Combine(“Downloads”, “*”)); to get the directories and then using strings.contain(xxx), after all, performance is fine.

With a lot of isf.DirectoryExists:
About cost 1.1s
With GetDirectoryNames and strings.contain(xxx)
After change the code, cost 0.11s.

How to create a branch from WP78 to 80

Please following these steps: 
1.right the trunk(include WP78 repository), choose branch/Tags 
2.navigate the combobox to “branch/80” 
3.click ok. 
4.open the solution, update the specified project 
5.remove the WP78 tiles from App.xaml 
6.remove the unavailable references and replace them. 
7.remove the package.config, it`s just contain WP78 nuget informations. 
8.re-install the nuget packages. 
9.if you meet the vm:Locator not exist, you can update the MVVMLight using nuget, after all error has fixed, you can see the not exist error is disappeared. 
10.commit the new solution.