Visual Studio Error 3034

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In Visual Studio using Entity Framework 5.0, I receive the following error when working with link tables (many-to-many mapping tables): Error 3034: Problem in mapping fragments starting at lines:Two entities with possibly different keys are…

SOLVED: Migrate VS Project with SQL to IIS

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SQL Server Problem When migrating a Visual Studio project with a local SQL Server application database to IIS, you receive the following error: "Failed to generate a user instance of SQL Server due to failure in retrieving the user's…

Move Crystal Report between Servers

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Crystal Report Object reference not set to an instance of an object. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. CrystalReportSource1.ReportDocument.ExportToHttpResponse(ExportFormatType.PortableDocFormat,…

Aptify Views and SQL Temporary Tables

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Building additional SQL views in Aptify Association and Membership Management Software can sometimes require you to use SQL temporary tables in your view. If you then attempt to create a database object from said view: You will get an Aptify…

You can't list SSIDs with WinRT

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SSID The new Microsoft API WinRT doesn't allow you to list SSIDs regardless of user permissions.  While it can be done with Win32, it cannot be done with WinRT.  Remember that an App can't enter the Store unless it is exclusively WinRT. …

Non-Standard Fonts CSS Tricks

A lot of the stuff I learn about CSS is just from inspecting websites created by other developers. So, when I’m surfing along and something catches my eye, I will inspect the element, and sometimes look at the style sheet to see what is going…

Solved: Data Annotation Client Validation

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Data Annotations Summary: You may have found code samples to generate your own Data Annotations handler for Web Forms.  You may have found incomplete or broken examples.  Stop.  Use this instead:  http://davalidation.codeplex.com/ You…

DNN Display on All Pages Not Working

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I was working on our dotNetNuke site with a Navigation bar and added it to all pages. I then edited the Navigation bar, pulled off the Display on All Pages check box in the Settings dialog box, and then rechecked it. It would not display on…

HOWTO: JQuery UI in IE7 & IE8

JQuery jqueryRotate is awesome, it can rotate images in every browser known to man. http://code.google.com/p/jqueryrotate/ Except that it breaks the ability to drag. (Easily fixable.) Unfortunately, the crazy backflips necessary for IE7…

ThrowIfMaxHttpCollectionKeysExceeded

On Dec 29, 2011,   Microsoft released a security update KB2656356 / MS11-100 for ASP.NET to address a potential Denial of Service vulnerability.  In the update, Microsoft introduced a limit to the number of data elements on an ASP.NET form. …