Centre for Software Practice

This is an error I run into frequently and is frustrating because of course their is no indication of what constraint is being violated. So now I run through the three most frequent problems that will cause this: Having a primary key specified on the DataTable where a query can potentially return duplicates. Sometimes duplicates are unavoidable ...

We have an application that we have 2 skins for reflecting the 2 customers of the application. When I went to using skins, I defeined the MasterPageFile in the web.config file rather than switching it programmatically in each page. Unfortunately, this meant that every time I wanted to view a page in Visual Studio 2005, I had to put the ...