Li Xiong

A boring, but typical, difficult case ---- ASP.NET session lost

A boring, but typical, difficult case, ASP.NET session lost Problem Description It was an large ASP.NET project. In testing environment, everything is fine. In production environment, when the load went up, an unhandled NullReferenceException occurred

How a single ShellExecute call opens a TXT file, with another GIF open unexpectedly

Problem Description: A customer called in, complained angrily. “A call to ShellExecute API, passing in a local txt file path, it opens a GIF file occasionally with the txt file! Definitely!” The customer was sure that the parameter was correct, and the

Hopeless performance. The ADO.NET 2.0 is slower than ADO 1.1

1.0 Warm up. Firstly my mentor shared the following question with me: Why the image gets reversed in mirror horizontally, but vertically. I asked many people about this question, but seldom gave me the accurate answer in 3 mins. Some interesting answers

I will try to translate my "UserMode Effective Debugger" to English

I almost finished my paper about "UserMode Effective Debugger" in Chinese, in my spare time. The paper is about how to debug application, like tess's blog. Now I will try to translate it to English here. The paper is divied into four parts. The first

Pageheap download here

It seems pageheap is not included in windbg installation packages. Though we can use appVerifier or gflag to do the same task, pageheap is more convenient in lots of situations.

文章的一些进展

该文章在三个多月前已经基本完成。这两天跟TieFeng和yeka交流了一下，接下来争取做好最后的工作。