ASP Experts

If you have ever tried to look at a System.DateTime or System.TimeSpan object in a debugger, you know how difficult it is to see what the value is.  For example, this is what a System.DateTime object looks like: 0:017> !do 0x040f59b8 Name: System.DateTime MethodTable: 60809f0c EEClass: 605e1fd8 Size: 16(0×10) bytes GC Generation: 2 (C:\Windows\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\mscorlib.dll) Fields: MT Field Offset Type VT Attr Value Name 6080ab9c 40000f4 4 System.UInt64 1 instance 633739266270770000 dateData 6082aa5c 40000f0 30 System.Int32[] 0 shared static DaysToMonth365 >> Domain:Value 0097ce58:03d6cad0 << 6082aa5c 40000f1 34 System.Int32[] 0 shared static DaysToMonth366 >> Domain:Value 0097ce58…(read more)

Continuing on from my previous post about DumpAllExceptions , here is another new update that comes with psscor2.  When you run !clrstack, you will now see the source and line information for the functions that are displayed.  This can be really helpful when trying to track down where a problem is and what path through your code this execution has taken. You don’t have to do anything to make this output display, it will automatically at the end of the line. The output will look something like: 02b9ef98 687db33a MyFile.DoWork(System.Web.HttpContext) c:\MyFile.cs:3710 .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space…(read more)

There have been a few places where you can see this command run, but I wanted to talk about it here officially.  This command is used to display all of the exceptions that are currently in the managed heap.  One interesting thing is that this function actually looks at what class the object derives from and if it derives from System.Exception, then it will show up in the list.  So you can have your own custom exceptions shown here regardless of what naming mechanism you use for your class. There is some helpful information about the output from this command here: ASP.NET Debugging – ASP.NET Tips- DumpAllExceptions , namely that if you run it twice, you may see different callstacks from the various exceptions. Here is the documentation…(read more)

I wanted to be the first to inform everyone that there is a major update to the debugger extension story for .NET.  Psscor2 has been released!  This is a superset of the SOS.dll that ships with the framework. This extension has a lot of advantages over SOS if you are trying to troubleshoot problems, especially if they are caused by ASP.NET.  All of the functionality that has been talked about on this blog for the SOS that comes with the debugger is now available for .NET Framework 2.0, 3.0, and 3.5. This one extension will troubleshoot all of those versions. I will be getting into the new commands and talking more about this in the coming weeks.  But I wanted to let everyone know and have you all go download the extension…(read more)