How to find out size of session in ASP.NET from web application?
Question
How to find out size of session in ASP.NET from web application?
Solution
If you're trying to get the size of Session during runtime rather than in debug tracing, you might want to try something like this:
long totalSessionBytes = 0;
BinaryFormatter b = new BinaryFormatter();
MemoryStream m;
foreach(var obj in Session)
{
m = new MemoryStream();
b.Serialize(m, obj);
totalSessionBytes += m.Length;
}
(Inspired by http://www.codeproject.com/KB/session/exploresessionandcache.aspx)
OTHER TIPS
The code in the answer above kept giving me the same number. Here is the code that finally worked for me:
private void ShowSessionSize()
{
Page.Trace.Write("Session Trace Info");
long totalSessionBytes = 0;
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter b =
new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
System.IO.MemoryStream m;
foreach (string key in Session)
{
var obj = Session[key];
m = new System.IO.MemoryStream();
b.Serialize(m, obj);
totalSessionBytes += m.Length;
Page.Trace.Write(String.Format("{0}: {1:n} kb", key, m.Length / 1024));
}
Page.Trace.Write(String.Format("Total Size of Session Data: {0:n} kb",
totalSessionBytes / 1024));
}
I think you can find that information by adding Trace="true" to the page directive of a aspx page. Then when the page loads you can see a large number of details regarding the page request, including session information i think.
You can also enable tracing in your entire application by adding a line to your web.config file. Something like:
<trace enabled="true" requestLimit="10" pageOutput="true" traceMode="SortByTime"
localOnly="true"/>