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How to generate and validate a software license key?

...eveloping a product (developed in C#) that'll be available for downloading and installing for free but in a very limited version. To get access to all the features the user has to pay a license fee and receive a key. That key will then be entered into the application to "unlock" the full version. ...
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DateTime2 vs DateTime in SQL Server

...datetime2. Here is their recommendation: Use the time, date, datetime2 and datetimeoffset data types for new work. These types align with the SQL Standard. They are more portable. time, datetime2 and datetimeoffset provide more seconds precision. datetimeoffset provides time zone s...
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Encapsulation vs Abstraction?

Here are the brief definitions of encapsulation and abstraction. 13 Answers 13 ...
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Insert picture into Excel cell [closed]

...aded (grey area) on outside of comment box > Format Comment > Colors and Lines > Fill > Color > Fill Effects > Picture > (Browse to picture) > Click OK Image will appear on hover over. Microsoft Office 365 (2019) introduced new things called comments and renamed the old co...
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What’s the difference between ScalaTest and Scala Specs unit test frameworks?

...iven Development) capable unit test frameworks for Scala written in Scala. And Specs is built upon may also involve the ScalaTest framework. But what does Specs offer ScalaTest doesn't? What are the differences? ...
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How do DATETIME values work in SQLite?

I’m creating Android apps and need to save date/time of the creation record. The SQLite docs say, however, "SQLite does not have a storage class set aside for storing dates and/or times" and it's "capable of storing dates and times as TEXT, REAL, or INTEGER values". ...
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How can I return pivot table output in MySQL?

...w.artfulsoftware.com/infotree/qrytip.php?id=78 I advise reading this post and adapt this solution to your needs. Update After the link above is currently not available any longer I feel obliged to provide some additional information for all of you searching for mysql pivot answers in here. It rea...
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How can we generate getters and setters in Visual Studio?

... Rather than using Ctrl + K, X you can also just type prop and then hit Tab twice. share | improve this answer | follow | ...
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Error: Could not find or load main class in intelliJ IDE

I'm a beginner in Java and am trying to run my code using IntelliJ that I just installed as my IDE with JDK 1.7. The following piece of code keeps does not even compile and keeps giving me the error: ...
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In WPF, what are the differences between the x:Name and Name attributes?

The title says it all. Sometimes it seems that the Name and x:Name attributes are interchangeable. 15 Answers ...