Debugging a performance issue on ListBoxDragDropTarget (Silverlight Toolkit)?

Posted by carlmon on Stack Overflow See other posts from Stack Overflow or by carlmon
Published on 2010-06-09T15:39:46Z Indexed on 2010/06/10 6:23 UTC
Read the original article Hit count: 392

Filed under:

c#

|

Silverlight

|

debugging

|

silverlight-4.0

I have a complex project using SilverLight Toolkit's ListBoxDragDropTarget for drag-drop operations and it is maxing CPU. I tried to reproduce the issue in a small sample project, but then it works fine. The problem persists when I remove our custom styles and all other controls from the page, but the page is hosted in another page's ScrollView.

"EnableRedrawRegions" shows that the screen gets redrawn on every frame. My question is this: How can I track down the cause of this constant redrawing?

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about Silverlight

Silverlight 4 Released

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
The final release of Silverlight 4 is now available. What is in the Silverlight 4 Release Silverlight 4 contains a ton of new features and capabilities. In particular we focused on three scenarios with this release: Further enhancing media support Building great business… >>> More
Performance of Silverlight Datagrid in Silverlight 3 vs Silverlight 4 on a mac

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using Silverlight Beta 4 for a LOB application. After finding out today that I'll have to wait perhaps 4 months to be able to develop with SL4 on Visual Studio 2010 I'm thinking I need to downgrade my application to SL3 but thats another question. The problem is I'm noticing absolutely abismal… >>> More
Silverlight TV 15: Announcing Silverlight 4 RC at MIX 10

as seen on Dot net Slackers - Search for 'Dot net Slackers'
John and Adam discuss Silverlight 4 RC, following up the MIX10 keynote announcement of Silverlight 4 RC by discussing what is new and what materials have been released on the Channel 9 learning center website. They cover their picks for some of the most impactful features in Silverlight 4 RC… >>> More
Silverlight TV 14: Developing for Windows Phone 7 with Silverlight

as seen on Dot net Slackers - Search for 'Dot net Slackers'
Silverlight TV is here at MIX10 where Windows Phone 7 (WP7) and Silverlight just became the best match since peanut butter and chocolate! Mike Harsh, Program Manager for the Silverlight team working on WP7, joins John Papa to demonstrate the WP7 device and the tooling used to create applications for… >>> More
Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args.To resolve this issue I have created my own action for triggering delegate commands… >>> More