uniqueidentifier

I need a unique identifier in .NET (cannot use GUID as it is too long for this case). Do people think that the algorithm used here is a good candidate or do you have any other suggestions? Dor Cohen This one a good one - http://www.singular.co.nz/blog/archive/2007/12/20/shortguid-a-shorter-and-url-friendly-guid-in-c-sharp.aspx and also here YouTube-like GUID You could use Base64: string base64Guid = Convert.ToBase64String(Guid.NewGuid().ToByteArray()); That generates a string like E1HKfn68Pkms5zsZsvKONw==. Since a GUID is always 128 bits, you can omit the == that you know will always be

I'm looking for a way to get a number which will almost surely change when running the code on different machines and almost surely stay the same between two runs on the same machine. If I were doing this as a shell script in Linux, I would use something like this: { uname -n ; cat /proc/meminfo | head -n1 ; cat /proc/cpuinfo ; } | md5sum But I need this in C++ (with boost) and at least on Windows, Linux and Mac. Rafael Baptista To generate a mostly unique machine id, you can get a few serial numbers from various pieces of hardware on the system. Most processors will have a CPU serial number,

Our iOS application is for specific users. So, we used device unique identifier for user identification. This approach works fine till iOS 6, because we are getting the same value every time. NSString *strUniqueIdentifier = [[UIDevice currentDevice] uniqueIdentifier]; In iOS 7, the above method is returning different values and we are getting issues in user identification. iOS 7 provides the following alternate . NSUUID *oNSUUID = [[UIDevice currentDevice] identifierForVendor]; [strApplicationUUID setString:[oNSUUID UUIDString]]; We replaced uniqueIdentifier with identifierForVendor , and

I am developing an SSRS 2008 R2 RDL file. Now, I am trying to add a report parameter which should be a multi-select. Previously I have worked with multi-select parameters but they have always been CHARACTER data types before. So in my main dataset my code was: ;WITH Cte AS ( SELECT 1 as id, CAST('<M>' + REPLACE( (select @IncidentType), ',' , '</M><M>') + '</M>' AS XML) AS Names ) SELECT id, Split.a.value('.', 'VARCHAR(MAX)') AS Names INTO #incident_types FROM Cte CROSS APPLY Names.nodes('/M') Split(a) (And in my RDL file this IncidentType report parameter allows multiselect) But now

I need to generate a unique code from a single PC, my software will be distribute by licence, and locally I need to identify the environment and send this code to the server. I don't want to mantain on the server a sequencial number and each client recieve a number of the sequence, i tried to read the MAC adress from NetworkInterfaces, but is not secure, the user can change easily the MAC adress. The best way I think if its possible to read the motherboard serial number, but I haven't found the way until now. Any sugestion? How much is your software worth ? Does the target market pirate