Tip: Asp.Net Request.InputStream is empty?

Recently I needed to post some json data from browser to web server. I used the following codes to read the input stream:

System.IO.StreamReader sr = new System.IO.StreamReader(Request.InputStream);
string json = sr.ReadToEnd();

There's one problem with the above codes, that is the json variable will hold empty string even though I am sure that data is posted to the web server. The resolution of the problem is to always set the stream position to 0. The resulting codes looks like this:

Request.InputStream.Position = 0; System.IO.StreamReader sr = new System.IO.StreamReader(Request.InputStream);
string json = sr.ReadToEnd();

Now with the first line of the codes, you will be able to get the stream data.

Tip: Solving jQuery Dialog Scrolling Problem.

Scenario:

Add a jQuery accordion widget into the jQuery dialog. The version of the jQuery used was 1.3.2 and the version for the jQuery UI was 1.7.2

Problem Statement:

The dialog vertical scrollbar did not actually scroll when the dialog content length is more than the dialog height.

Resolution:

Add a "position: relative" into the dialog "div", that will solve the scrolling problem. It's tested in IE7 and FF3.0

Example:

<div id="historyDialog" class="demo" title="Last 10 Orders" style="position:relative">