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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for June 6th, 2012

There are reasons why Delphi is not C++ (via: Entropy Overload: One-liner RAII in Delphi)

Posted by jpluimers on 2012/06/06

There was a nice short discussion on Entropy Overload where Ivan Levanshew seemed to want to be Delphi way more C++ and Barry Kelly explains why Delphi isn’t C++.

Both Delphi and C++ are great languages, but both have weaknesses too. It is good that their individual strengths complement each other, and their weaknesses don’t crossover too much.

Ivan Levashew said…

It’s XE2 now, and there is still no proper RAII despite Delphi runtime already having all the required functionality for years. Variants copying and destruction is an example.

It’s a pity. Read the rest of this entry »

Posted in C++, Delphi, Delphi XE2, Development, Software Development | 1 Comment »

.NET/C#: reading/writing Excel workbooks and worksheets

Posted by jpluimers on 2012/06/06

Basically there are many ways to read/write Excel workbooks and worksheets:

  1. Use the open source EPPlus .NET assembly (which is based on ExcelPackage)
  2. Use the open source ExcelLibrary which seems to be derived from PHP ExcelWriter
  3. Use OleDB to read/write Excel with either the JET (Office <= 2003) or ACE (Office +> 2007) drivers
  4. Use COM/OleAutomation/Interop/VSTO

The latter is used by many many people, and has two big drawbacks:

  • it requires Excel to be installed
  • it is painfully slow

The others can run server side as they do not require Excel to be installed. They are also much faster.

I’ve used OleDB, and it is sort of OK, but hard work.

EPPlus is much faster and versatile and seems to be the most active open source project.


Posted in .NET, .NET 4.5, ASP.NET, C#, Development, Excel, Office, Software Development | 2 Comments »

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