Hadsy.net - Thursday, 01 May 2008

Thursday, 01 May 2008

Visual Studio 2008 Master Page error with a changed ContentPlaceHolderID

When I changed the ContentPlaceHolderID in the Master Page (and the content pages) and then tried to view and content pages in design mode I got the following error:

"The page has one or more <asp:Content> controls that do not correspond with <asp:ContentPlaceHolder> controls in the Master Page"

For some reason the Visual Studio 2008 web page designer mode does not like having XML shorthand notation of the <title /> tag in the <head> section in the master page.

So this causes the error:

Changing the <title /> to <title></title> fixes the problem:

Job done.

Thursday, 01 May 2008 13:43:40 (GMT Standard Time, UTC+00:00)

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Web Dev

Wednesday, 30 April 2008

JavaScript Popup Options

Below are the parameter details for the window.open() (popup) JavaScript function:

The list details are taken from the Blazonry website.

Wednesday, 30 April 2008 10:10:32 (GMT Standard Time, UTC+00:00)

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Web Dev

Tuesday, 29 April 2008

SQL Server Data Types and Their .NET Framework Equivalents

See MSDN SQL Server Developer Center

Tuesday, 29 April 2008 07:52:49 (GMT Standard Time, UTC+00:00)

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SQL Server

Monday, 28 April 2008

LINQ and the C# null coalescing (??) operator

Scott Gu has a nice article describing the null coalescing operator when used with LINQ queries.

A quick example:

The Qty & Size properties for the anonymous type will be defined as integer types NOT nullable integers. If any of the spec.Attribute("x") values are null or don't exist for any reason, the value returned will be a simple integer zero.
This is because using the null coalescing operator (??) is enforcing that null can never ever happen.

LINKS
Scott Gu blog article