guid

I'm trying to ascertain some way to establish a unique ID for Chrome tabs that meets the following conditions: Uniquely identifies each tab Stays the same for a given tab between browser restarts (session-restored tabs) Stays the same if a tab is closed and then reopened with Undo Closed Tab (Ctrl+Shift+T) Stays distinct if a tab is duplicated I've done some rather aggressive research to find a comprehensive solution, but nothing seems to quite do the trick. Here are the methods I have tried, in increasing order of efficacy: Use Chrome's provided tab.id: does not persist between browser

Up until now i've been using the C# "Guid = Guid.NewGuid();" method to generate a unique ID that can be stored as the ID field in some of my SQL Server database tables using Linq to SQL. I've been informed that for indexing reasons, using a GUID is a bad idea and that I should use an auto-incrementing Long instead. Will using a long speed up my database transactions? If so, how do I go about generating unique ID's that are of type Long? Regards, Both have pros and cons, it depends entirely on how you use them that matters. Right off the bat, if you need identifiers that can work across several

I have multiple projects in a single Visual Studio (2008) solution. I just discovered that each of these projects uses a same GUID, so in the solution file it looks like this: Project("{FAE04EC0-F103-D311-BF4B-00C04FCBFE97}") = "Pro1", "Pro1\Pro1.csproj", "{...}" Project("{FAE04EC0-F103-D311-BF4B-00C04FCBFE97}") = "Pro2", "Pro2\Pro2.csproj", "{...}" Do I have to change these GUIDs so they're unique and what are they used for? Project persistence block in a solution file has the following format: Project("{project type GUID}") = "<Project name>", "<project file location>", "{<Unique project

How to determine if a string contains a GUID vs just a string of numbers. will a GUID always contain at least 1 alpha character? Deepesh See if these helps :- Guid guidResult = Guid.Parse(inputString) ( http://msdn.microsoft.com/en-us/library/system.guid.parse.aspx ) bool isValid = Guid.TryParse(inputString, out guidOutput) http://msdn.microsoft.com/en-us/library/system.guid.tryparse.aspx There is no guarantee that a GUID contains alpha characters. FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF is a valid GUID so is 00000000-0000-0000-0000-000000000000 and anything in between. If you are using .NET 4.0,

It is connected to BI and merging of data from different data sources and would make that process more smooth. And is there an optimal migration strategy from a database without Guids to a version with Guids without information losses? Edited after reading Frans Bouma's answer, since my answer has been accepted and therefore moved to the top. Thanks, Frans. GUIDs do make a good unique value, however due to their complex nature they're not really human-readable, which can make support difficult. If you're going to use GUIDs you might want to consider doing some performance analysis on bulk data

I searched hard, but was unable to grasp the whole idea. Can anyone tell me: What COM actually is? How do GUIDs work, and how are they used by COM? How does COM resolve the issues of different DLL versions. Or at least, point me to a good article somewhere that explains these concepts? Thanks! Charles Bretana COM is "Component Object Model". It is one of the first technologies designed to allow "binary reuse" of components... Originally, it was the rewrite of what was, in Microsoft Office circa 1988-1992 time frame, referred to as Dynamic Data Exchange (DDE), a technology designed to allow the