ScottGu's Blog

# My ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas "Highlights Page"

Several people have sent me email lately asking for a suggested short-list of my best/favorite blog posts

# If you work with ASP.NET 2.0 you should be reading Scott Guthrie's blog

You should be reading Scott Guthrie already if you are doing ASP.NET 2.0 work but perhaps you aren't...

# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# ASP.NET 2.0 Tips and Tricks.... Setting up Subversion at home... Centrino

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

This is a great resource for anyone who is developing in ASP.NET 2.0 http://weblogs.asp.net/scottgu/pages/ASP.NET-2.0-Tips_2C00_-Tricks_2C00_-Recipes-and-Gotchas.aspx...

# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# ScottGu's tips and tricks

I'm only really making this entry so I can keep the link in the BAS (Blog Attached Storage), but both of you might be interested in having this around.

# Consejos, trucos, recetas y trampas de ASP.NET 2.0

Scott Guthrie es uno de los padres de ASP.NET, dentro de Microsoft es conocida la historia de...

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# My ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas "Highlights Page"

ScottGu's Blogからです。 My ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas "Highlights Page"...

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# Tip/Trick: Show Detailed Error Messages to Developers

Problem: You are developing/maintaining an ASP.NET web-site, and would like the ability to conditionally

# Collection Scott Gu's of ASP .Net posts

# ASP.NET 2.0 Tipps, Tricks, Rezepte und Gotchas

Scott Guthrie's Blog ist einfach immer wieder eine Freude! Heute fand ich seine populärsten Artikel...

# Tip/Trick: Creating Sub-Web Projects using the VS 2005 Web Application Project Option

One scenario that many large development teams often ask me about is whether it is possible to split

# Una risorsa fondamentale per il mio lavoro

Di questo linkne faccio un post nel mio blog per tenerlo sempre a portata di....mouse!. Trattasi...

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# Data Source Control vs. Simple Data Coding

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# Mulitple Website and Single Sign in

# Tip/Trick: Guard Against SQL Injection Attacks

SQL Injection attacks are reallynasty security vulnerabilities, and something all web developers (regardless

# Una risorsa fondamentale per il mio lavoro

Di questo linkne faccio un post nel mio blog per tenerlo sempre a portata di....mouse!. Trattasi...

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

I need help with xp_cmdshell, using VWD2005 and SQL2005 Express Edition.  Despite enabling this feature using the surface area configuration, I still cannot run a stored procedure using xp_cmdshell.  Any idea what I could be doing wrong? Thanks in advance.

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Hi Scott, If both C# and VB.net Code is there,fine and Its a good link which is to added in favorites...

# Resizing a web page

Scott,

   I am trying to use Javascript to resize a gridview control vertically as a user resizes a web page vertically with his mouse.   Can you point me in the right direction for that?

regards,

Ray Levron

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Hi scott ure posts have been a great help. just need to ask ya, how to batch update through a datlist control, without using business layers as shown on the tutorials on te asp.net website and instaed of the the northwind mdf database iam using sql server 2005. Any help or directions towards tutorials would be great. just to let u know iam a beginner at asp.net 2.0

thanks

raymondo

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Hi Scott, I wan to make my own Treeview control has the same behavior like one appears when i install VS .net 2005, i mean when i check a treenode with children... they all appears checked too, and if the parent is unchecked... and then i checked one of its childs... parent treenode get checked but with gray color. I know that when i check or uncheck a treenode althougth i had set OnCheckChange method... it will not do anything till i do a postback action like a simple button. So... how could i do this? thanks...

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Hi Scott. Your blog is a great asp.net resource and as i am new to asp.net, it has helped me in many ways. I have one question to ask, I have a master page that uses

some images and a css file that are placed in root\images folder. if i use deny users="?" in root web.config and go to login.aspx, the master page is loaded but without images or css styles. I have to place a web.config in the images folder with allow users="*" to make master page work correctly. Is my solution correct or is there something i have missed? or is there a better/recommended way to do it?

Shouldn't asp.net allow master pages to load resources from subfolders even with anonymous user?

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

I just went back and read the comments on

http://weblogs.asp.net/scottgu/archive/2006/04/11/Don_1920_t-run-production-ASP.NET-Applications-with-debug_3D001D20_true_1D20_-enabled.aspx

I'll look into publishing the .pdb files.

Thanks.

# Posting Issues

What is the maximum allowed post length? I've tried to post 3 times now. I receive no error message, but it doesn't appear even after 16 hours.

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Sorry, I was referring to the max size for comments on this blog.

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

I've placed my question on a separate page instead.

http://nathanael.jones.googlepages.com/question

Thanks,

Nathanael

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

I've succeeded in rewriting 404 requests from IIS back to their original url in ASP.NET, but IIS 5.1 doesn't allow post-backs to unmapped extensions.

Does IIS6 allow the POST verb to unmapped extensions?

How bad is the performance hit when IIS is configured to send * to the runtime?

Thanks,

Nathanael

# URL Rewriting

I just read that ASP.NET 2.0 is now capable of sending requests back to IIS for proccessing, so mapping * to aspnet_isapi.dll doesn't invoke a performance hit.

I originally read something (probably regarding 1.1), that stated how deadly it was to map * to aspnet_isapi.dll, due to performance issues.

Is this correct? I've tried to do URL mapping in various ways without this, and failed miserably. I have tried leveraging the 404 rewrite in IIS, using a mixed rewrite/redirection system, and many other less successful approaches.

Thansk,

Nathanael

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Thanks! That lets me sleep easier.

I found a solution to my most pressing issues. You can view it here (I will try to post it below, but I don't know if it will take. My last one didn't).

http://nathanael.jones.googlepages.com/resolution

The last three questions are still relevant, if less important. Due to the lack of documentation, and 'black-box' nature of ASP.NET, I'm not too confident about these.

Thanks,

Nathanael

What do you use for URL and path manipulation? I know the runtime uses System.Web.VirtualPath and System.Web.Util.UrlPath, but they are marked ‘internal’. I’ve had to create my own class to maintain URL-parsing consistency.

Is there a reason why ASP.NET uses redirection instead of URL rewriting for error pages? I personally find it much easier to deal with errors and 404s if the URL doesn’t change on me. I hate it when I misspell one character, and the server redirects me to a new URL, denying me the chance to rectify my mistake. I have implemented a custom system in global.asax that uses Server.Transfer to handle error messages; the admin is given a page with descriptive exception details, while all the other unauthenticated users are provided with a generic message. Is this an acceptable approach?

Is it fine to ignore the url authorization system and simply use User.IsInRole throughout my code? Many of my pages do not have very clear-cut security requirements, and must perform complex role checks.

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Ok, I have another problem...

I am caching ASP.NET snippets in the database for the summary field on each article.

As the paths in each snippet are relative to the parent article file, I have been creating an instance of Page and using the ParseControl method. Unfortunately, this seems to simply bring back a LiteralControl instead of the proper hierarchy.

What do you reccomend?

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Addendum: I mean AppRelativeTemplateSourceDirectory, not TemplateSourceDirectory. Also, this property must be set recursively. See example below.

========================

/// <summary>

/// Recursively sets the AppRelativeTemplateSourceDirectory property on the specified control and all of its children

/// </summary>

/// <param name="c"></param>

/// <param name="AppRelativeTemplateSourceDirectory"></param>

public static void SetPathRecursive(Control c, string AppRelativeTemplateSourceDirectory) {

   if (c == null) return;

   c.AppRelativeTemplateSourceDirectory = AppRelativeTemplateSourceDirectory;

   foreach (Control child in c.Controls) {

       SetPathRecursive(child, AppRelativeTemplateSourceDirectory);

   }

}

/// <summary>

/// Renders the specified code to the specified output stream

/// </summary>

/// <param name="code">The code to render</param>

/// <param name="output"></param>

/// <param name="parent">The parent page</param>

/// <param name="VirtualPath">The path the specified code should be virtually executed from. The location relative paths are resolved from</param>

public static void RenderCode(string code, TextWriter output, Page parent, string AppRelativeTemplateSourceDirectory) {

   //Parse the text into a control object (a container control object is created automatically.

   Control c = parent.ParseControl(code);

   SetPathRecursive(c, AppRelativeTemplateSourceDirectory);

   //Render to the control

   XhtmlTextWriter htw = new XhtmlTextWriter(output);

   c.RenderControl(htw);

}

# Update

The ContentPlaceHolder patch described on http://nathanael.jones.googlepages.com/resolution isn't working properly... All of the paths are rendered by HtmlLink as if the control is located in the application root. If I set the AppRelativeTemplateSourceDirectory to "~/content/downloads/articlefolder", I get worse issues. The path resolves twice, as in "content/downloads/articlefolder/content/downloads/articlefolder/stylesheet.css" Wacky. This is when good documentation is really missed....

What do I try next? Control adapters?

Please help.

Thanks,

Nathanael Jones

# The Infamous HtmlLink

Apparently there wasn't any problem with the code I posted... A little quirk with the HtmlLink control was tripping me up.

In a few master pages I used the Control.RenderControl method on all children of the ContentPlaceHolder object inside the HEAD.

This was used to pull out information from the meta tags and display the posted date. This had the side effect of triggering a RenderControl on my HtmlLink controls before render-time.

See ContentPlaceHolder patch, http://nathanael.jones.googlepages.com/resolution)

HtmlLink renders correctly the first time the function is called, but starts duplicating and corrupting the href element on subsequent calls. Yet another GOTCHA for the list.

Truly, this project has been agonizing like no other. Reverse engineering device drivers is lots of fun in comparison.

# offline client

hi Scott,

I am developing an e-magazine in asp.net 2.0 and SQL server. I want to develop an Offline Client to view the magazine offline. Any ideas about creating an Offline Client application for ASP.Net  application with DB Operation.

Thanks in Advance

yenkay

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

Scott,

Do you have any links to information on the process of developing an ASP.NET web application using Team Foundation Server? If not, I'd love to see some posts from you along those lines or some howto videos/articles on the subject.

Interested in having my small team of developers (3) able to checkout files, update them, test/debug their changes to the site locally on the machine and then when they check in the files, only then would the changes be reflected on the development IIS server.

Thanks in advance for any help/links you can provide.

-Tom

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

On Aug 8 there was a post that stated, "I have worked around this by handling the objectdataSource Updating event and adding the values into the object manually..."  Can you show an example of how to get at the object that is created?

For example, I have the below and before that update method is called I need to set a property on that Employee object that is passed to Update.

.aspx

dataobjecttypename="mynamespace.Employee"

updatemethod="Update"

.aspx.cs

protected void objectsource_Updating(object sender, ObjectDataSourceMethodEventArgs e)

{

   ...

}

Employee.cs

[DataObjectMethod(DataObjectMethodType.Update, true)]

public static bool Update(Employee o)

{

   o.Save();

   return true;

}

# re: ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

do you have tips for VS 2005 and database express?

# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas &laquo; ???

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# Enlaces 31 de Mayo: ASP.NET, ASP.NET AJAX, Visual Studio y.NET &laquo; Thinking in .NET

Pingback from  Enlaces 31 de Mayo: ASP.NET, ASP.NET AJAX, Visual Studio y.NET &laquo; Thinking in .NET

# .NET Tips & Tricks

Last update: June 13 , 2007 Document version 0.6 Preface If you have something to add, or want to take

# Tip/Trick: Creating Packaged ASP.NET Setup Programs with VS 2005

Scenario You have built an ASP.NET Web Application using Visual Studio 2005, and want to enable customers

# Tip/Trick: Creating Packaged ASP.NET Setup Programs with VS 2005

Scenario You have built an ASP.NET Web Application using Visual Studio 2005, and want to enable customers

# Tip/Trick: Creating Packaged ASP.NET Setup Programs with VS 2005

Scenario You have built an ASP.NET Web Application using Visual Studio 2005, and want to enable customers

# tips on how to blog &raquo; How To Blog -

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# &nbsp; Building and using a LINQ for SQL Class Library with ASP.NET 2.0&nbsp;by&nbsp;diet.MEDtrials.info

Pingback from  &nbsp; Building and using a LINQ for SQL Class Library with ASP.NET 2.0&nbsp;by&nbsp;diet.MEDtrials.info

# Getting Started with ASP.NET 2.0 | GrantPalin.com

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# Tip/Trick: Automating Dev, QA, Staging, and Production Web.Config Settings with VS 2005

One of the questions I get asked fairly regularly is: "how can I can easily change different configuration

# Tip/Trick: Automating Dev, QA, Staging, and Production Web.Config Settings with VS 2005

One of the questions I get asked fairly regularly is: &quot;how can I can easily change different configuration

# Tip/Trick: Automating Dev, QA, Staging, and Production Web.Config Settings with VS 2005

One of the questions I get asked fairly regularly is: "how can I can easily change different configuration

# Dicas de ASP.NET 2.0

Mais uma vez, navegando pelo blog do Scott Guthrie , encontrei um post dele que traz uma lista de dicas

# Scott Guthrie Stories

You've been kicked (a good thing) - Trackback from DotNetKicks.com

# Tip/Trick: Building a ToJSON() Extension Method using .NET 3.5

Earlier this year I blogged about a new language extensibility feature of C# and VB called &quot;Extension

# 技巧/诀窍：用 .NET 3.5 创建 ToJSON() 扩展方法 (木野狐译）

【原文地址】 Tip/Trick: Building a ToJSON() Extension Method using .NET 3.5 【原文发表日期】 Monday, October 01, 2007

# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas &laquo; Private: .NET + OO concept + RIA(AJAX)

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# MSDN Blog Postings &raquo; Scott Guthrie's ASP.NET tips, tricks and gotchas

Pingback from  MSDN Blog Postings  &raquo; Scott Guthrie's ASP.NET tips, tricks and gotchas

# Scott Guthrie's ASP.NET tips, tricks and gotchas

And for those of you who are using ASP.NET - Scott Guthrie also has a great series articles on ASP.NET

# 技巧/诀窍：在ASP.NET中重写URL(转)

技巧/诀窍：在ASP.NET中重写URL 【原文地址】Tip/Trick:UrlRewritingwithASP.NET

【原文发表日期】Monday,February26,...

# Jan 24th Links: ASP.NET, ASP.NET AJAX, Visual Studio, .NET, IIS

I just arrived back from my trip from Asia, and decided to celebrate (since I'm jet-lagged and can't

# Links 6/Fev: ASP.NET, ASP.NET AJAX, Visual Studio, .NET, WPF

Links 6/Fev: ASP.NET, ASP.NET AJAX, Visual Studio, .NET, WPF

# xhtmlConformance mode="Legacy" vs ASP.NET AJAX

xhtmlConformance mode="Legacy" vs ASP.NET AJAX

# 28ste April links: ASP.NET, ASP.NET AJAX, ASP.NET MVC, Silverlight

Hier vind je mijn laatste link-lijst series . Bekijk ook mijn ASP.NET Tips, Tricks and Tutorials pagina

# My Top 100 Favourites

1 ASP.NET ASP.NET Official Site 2 &#160; DotNetVideos 3 Development MSDN 4 &#160; Code Plex 5 &#160;

# Links op 20 mei: ASP.NET, ASP.NET AJAX, .NET, Visual Studio, Silverlight, WPF

Mijn verontschuldigingen voor de weinige posts de laatste weken. Mijn werk en leven zijn enorm de druk

# Collegamenti del 6 Febbraio, ASP.NET, ASP.NET AJAX, Visual Studio, .NET, WPF

Collegamenti del 6 Febbraio, ASP.NET, ASP.NET AJAX, Visual Studio, .NET, WPF

# Ultracet.

Is ultracet addictive. Ultracet.

# Tips and Tricks News

Tips and Tricks News

# Enlaces del 10 de Octubre: ASP.NET, ASP.NET AJAX, jQuery, IIS &laquo; Thinking in .NET

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# Concept Cars - 14. Toyota Fine-X

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# Enlaces a 22 de Octubre: ASP.NET, Visual Studio, WPF y Silverlight &laquo; Thinking in .NET

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# Nov 6th Links: ASP.NET, ASP.NET AJAX, jQuery, ASP.NET MVC, Silverlight and WPF

Last week was our big PDC conference, and I&#39;ve been busy catching up back at work this week.&#160;

# 2008!! | Don Kitchen

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# Linksammlung #4 at Programming with Silverlight, WPF &amp; .NET

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# Links v??? ASP.NET | OhIsee.com

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# ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

ASP.NET 2.0 Tips, Tricks, Recipes and Gotchas

# 6月7日链接篇：ASP.NET, AJAX, ASP.NET MVC, Visual Studio

【原文地址】 June 7th Links: ASP.NET, AJAX, ASP.NET MVC, Visual Studio 【原文发表日期】 Sunday, June 07, 2009 12:05

# ASP.NET MVC Archived Blog Posts, Page 1

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# Ссылки на 7-е июня: ASP.NET, AJAX, ASP.NET MVC, Visual Studio

Вот вам последняя на данный момент публикация из моей серии списков ссылок . Также почитайтей мою страничку

# the rasx() context &raquo; Blog Archive &raquo; Magneto, MariaDB, Moblin and other links&hellip;

Pingback from  the rasx() context  &raquo; Blog Archive   &raquo; Magneto, MariaDB, Moblin and other links&hellip;

#

【原文地址】Tip/Trick:UrlRewritingwithASP.NET【原文发表日期】Monday,February26,20079:27PM经常有人请我指导应该如何动...