Visual Studio Toolbox Went Empty

My Visual Studio 2010 goes weird these days, one problem is that it cannot open previously opened files when Visual Studio starts again. This is not solved yet...

Another problem is when I am designing WinForm, the tool box went empty completely, no Windows Form controls like textbox, label... at all. Luckily I find a fix:

1, Navigate to this folder

Windows 7:

C:\Users\zhang5\AppData\Local\Microsoft\VisualStudio\10.0

Windows XP:

C:\Documents and Settings\Local Settings\Application Data\Microsoft\VisualStudio\10.0

(For VS2008 it will be 9.0)

2, Delete these hidden files

"toolbox.tbd", "toolboxIndex.tbd", "toolbox_reset.tbd", "toolboxIndex_reset.tbd"

Restart Visual Studio and it recovers.

Visual Studio DataSet Visualizer No Data, Please use Righthand Data Visualizer

I don't know why, but sometimes, when I was debugging Visual Studio codes, I cannot click the "Magnify" icon to view DataTable contents, this is so frustrating... Very inconvenient.

I have read some posts but none of them seemed useful, but luckily, I found there is another tool developed by Miha Markic, a Microsoft MVP, which can visualize the datatable.

This is called Righthand Data Visualizer:You can download it from here:

http://blog.rthand.com/page/Righthand-Dataset-Debugger-Visualizer.aspx

The installation path is:

Visual Studio installation path:

\Common7\Packages\Debugger\Visualizers

For example, in Visual Studio 2010, it's C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Packages\Debugger\Visualizers

Don't need to restart Visual Studio, but if you are in debugging, you need to quit and debug again.

Let's see its screen: