Rock, Paper, Azure! Contest – White Screen or 404 Error While Running Local.

 .NET, ASP.NET, C#  No Responses »
Apr 062011
 

I registered for ROCKPAPERAZURE, downloaded the Bits, after installing the pre-reqs, click F5 and got a 404/blank page.

After some troubleshooting I found that install the following applications through the Microsoft Web Platform Installer, the issue was corrected.  I also verified this with Kevin D. Wolfe - as he had the same issue – thanks Kevin:

  1. IIS 7 Recommended Configuration (Good to clean up IIS installs)
  2. Application Request Routing 2.5

Anyway happy Rock, Paper, Azure!, follow the link for more info or to compete.

 Posted by Greg at 12:05 pm  Tagged with: , , , , ,

Silverlight 4 Printing

 .NET, Application, Architecture, ASP.NET, Enterprise, General, Silverlight  1 Response »
Jan 182011
 

Printing in Silverlight has been made pretty simple, how it comes with some caveats because it opnly supports rasterized image printing.  Not 100% a problem but in LOB applications will run into issue with printing thinks like PDF, because all formatting is lost in reflect to the final printed document.

Here is a quick code method on printing in Silverlight 4:

PrintDocument documentToPrint= new PrintDocument();
documentToPrint.DocumentName = "Sample Document";
documentToPrint.StartPrint += new EventHandler(documentToPrint_StartPrint);
documentToPrint.PrintPage += new EventHandler(documentToPrint_PrintPage);
documentToPrint.Print();

 Posted by Greg at 11:54 am  Tagged with: , , ,

Quick Refresher – ASP.NET Page Life Cycle

 .NET, Application, Architecture, ASP.NET, General  No Responses »
Jan 062011
 

The Life Cycle of a page when requested for the first time:

Initializing: During this phase, the server creates an instance of the server control

Loading: During this phase, the instance of the control is loaded onto the page object in which it is defined.

PreRendering: During this phase, the control is updated with the changes made to it. This prepares the control for rendering.

Saving: During this phase, the state information of the control is saved. For example, if a value is set for the control during the Load event, it is embedded in the HTML tag that will be returned to the browser.

Rendering: During this phase, the server creates the corresponding HTML tag for the control.

Disposing: During this phase, all cleanup tasks, such as closing files and database connections opened by the control are performed.

Unloading: During this phase, all cleanup tasks, such as destroying the instances of server control are performed. This is the final event in the life cycle of a server control

The processing sequence in which a page is processed during a postback event is:

Initializing: During this phase, the server creates an instance of the server control

Loading view state: During this phase, the view state of the control posted by the client is reloaded into the new instance of the control.

Loading: During this phase, the instance of the control is loaded onto the page object in which it is defined.

Loading the postback data: During this phase, the server searches any data corresponding to the control that is loaded in the data posted by the client.

PreRendering: During this phase, the control is updated with the changes made to it. This prepares the control for rendering.

Saving state: During this phase, the change in the state of control between the current request and the previous request of the page is saved. For each change, the corresponding event is raised. For example, if the text of a textbox is changed, the new text is saved and a text_change event is raised.

Rendering: During this phase, the server creates the corresponding HTML tag for the control.

Disposing: During this phase, all cleanup tasks, such as closing files and database connections opened by the control are performed.

Unloading: During this phase, all cleanup tasks, such as destroying the instances of server control are performed. This is the final event in the life cycle of a server control

The events associated with the relevant page cycle phases are:

  • Page Initialization: Page_Init
  • View State Loading:LoadViewState
  • Postback data processing: LoadPostData
  • Page Loading: Page_Load
  • PostBack Change Notification: RaisePostDataChangedEvent
  • PostBack Event Handling: RaisePostBackEvent
  • Page Pre Rendering Phase: Page_PreRender
  • View State Saving: SaveViewState
  • Page Rendering: Page_Render
  • Page Unloading: Page_UnLoad
 Posted by Greg at 6:08 pm  Tagged with: , ,

Databinding in Silverlight

 .NET, Application, Architecture, C#, General, Silverlight  No Responses »
Jun 202010
 

Databinding in Silverlight is based on any object that is inherites from the DependencyObject class.  Now, with new versions of Silverlight may new features (keywords) had been added.  Let’s look at a couple of new ones.

StringFormat:
Allows the ability to do string formatting directly in the databinding, example:

<TextBox Text=”{Binding paymentDate, StringFormat=’MM/dd/yy’}“/>

TargetNullValue:
Allows you to define what to show if value is null.

<TextBlock Text=”{Binding Path=pageContent, TargetNullValue=’No Page Content is Currently Available’}” />

FallBackValue:
Is used to define a value when the value can not be loaded through the data binding.

<TextBlock Text=”{Binding Path=pageContent, FallbackValue=’There was an Error Retreiving the Data, Please try Again Later.’}”  />

As you can see by the above examples, there are a few helpful keywords with databindings – that deal with formatting, nulls, and when things don’t go right.

 Posted by Greg at 11:44 am  Tagged with: , , ,

TechED 2010 BOF Session

 .NET, Application, Architecture, Enterprise, General, Silverlight  No Responses »
Jun 142010
 

Shawn Wildermith and I had the pleasure of hosting a Birds-of-a-feather discussion on “Silverlight, how will it change frontend development?”. We had roughly 40-50 people present and it was a great experience. Was good to talk through real work issues, so thanks to iNETA and Microsoft for allowing us to host such a great session.

 Posted by Greg at 12:35 pm  Tagged with: , , , ,

TechED 2010

 .NET, Architecture, OO Concepts, Silverlight  No Responses »
Jun 022010
 

I can’t believe TechED 2010 is almost here. This year I get the opportunity to represent the Microsoft community as a web expert, so if you are at TechED this year swing by the web platform expert area and visit with me. I am also doing a BOF this year with Shawn Wildermith and I am listed as a speaker on the TechED site. Also, if you aren’t doing anything on 6/8 from 1:45-2:30 swing by room 335 and catch our discussion on “Silverlight, where will it take frontend development?”

 Posted by Greg at 8:40 pm  Tagged with: , , , , ,

Tampa Code Camp Presentations

 .NET, ASP.NET, C#, LINQ, WCF  No Responses »
Jan 102010
 

At Tampa Code Camp 2009 I did 3 sessions, one on Linq 4.0, one on WCF 4.0, and an impromptu discussion on TDD.  Here are the presentations on Linq 4.0 and WCF 4.0.

LINQ 4.0

WCF 4.0

 Posted by Greg at 4:05 pm  Tagged with: , , , ,

One Way to Solve Collection Validation in Silverlight 3

 .NET, Application, Architecture, Enterprise, General, Silverlight  No Responses »
Nov 302009
 

In one of my current projects I used Datagrid’s with RowDetail forms for editing the ItemSource collection.  This created  a unique issue with exception throwing from the entities so the form will provide immediate response to the user.  This became very difficult to accomplish with the fact that the entities were provided by WCF (the Domain Service – we are not using RIA).   Now the issue is that the WCF ONLY provides the implementation of the entity and not the entity itself, so in short terms no exception is thrown to the UI; however we would receive the general service fault exception from the service.

To overcome this I used the shared entity model and included them in both the Silverlight frontend and WCF backend.  Now this is great solution; however if the user does not enter the form field well no instant feedback.

So for this opportunity, I created a .Validate method on the object and had it produce an error collection as well as return a true/false.

This option now allowed me to validate the object in ItemSource collection, so now the application can bulk save and evaluate the collection of data rather than one field at a time.

I will post an example of this process in the near future as well as how to do it.

 Posted by Greg at 3:00 pm  Tagged with: , , ,

Visual Studio 2005 Dropping Out of Debug (After IE8 Installed)

 .NET, ASP.NET, General  No Responses »
May 052009
 

Had this issue and wanted to pass it on:

IE 8 has a feature called Loosely-Coupled Internet Explorer (LCIE) which results in IE running across multiple processes.

http://www.microsoft.com/windows/internet-explorer/beta/readiness/developers-existing.aspx#lcie

Older versions of the Visual Studio Debugger get confused by this and cannot figure out how to attach to the correct process. You can work around this by disabling the process growth feature of LCIE. Here’s how:

  1. Open RegEdit
  2. Browse to HKEY_LOCALMACHINE -> SOFTWARE -> Microsoft -> Internet Explorer -> Main
  3. Add a dword under this key called TabProcGrowth
  4. Set TabProcGrowth to 0
    Since you are running on Windows Server 2003, this is all you should need to do. If you run into the same problem on Vista or newer, you will also need to turn off protected mode.

Credit: Brad Sullivan, Program Manager, Visual Studio Debugger, MSFT

To turn off protected mode in Vista, it is the checkbox on the Security tab under Tools -> Internet Options.

 Posted by Greg at 8:47 am  Tagged with: , ,
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