Delphi

A case when FreeAndNil is your enemy

Author: Allen It seems that my previous post about FreeAndNil sparked a little controversy. Some of you jumped right on board and flat agreed with my assertion. Others took a very defensive approach. Still others, kept an “arms-length” view. Actually, the whole discussion in the comments was very enjoyable to read. There were some very excellent cases on both sides. Whether or not you…
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News

jqGrid and XSS Security

Author: Craig Stuntz Version 3.5.2 of jqGrid included an important new feature: Now when autoencode is set to true we encode the data coming from server and not only when we post it (secutity fix) Prior to this, you were required to encode the data yourself. Now personally…
News

Entity Framework Models and Source Control

Author: Craig Stuntz As you’re probably aware, an Entity Framework model is stored in a single XML file, with the extension EDMX. Developers occasionally ask if this means that two people cannot work on the entity model concurrently. My answer to this is, “It…
News

join in LINQ to SQL and LINQ to Entities Considered Messy, Redundant

Author: Alf Christophersen In this post I will demonstrate that use of the join keyword in LINQ to SQL and LINQ to Entities is nearly always wrong. LINQ queries which you write with the join keyword are harder to read and write than queries you write using associations, and they require knowledge of database metadata which is not required otherwise. This introduces the potential for errors and…
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Delphi

Delphi 2010 DirectWrite "Hello World" Example

Author: Sinisa P29531 In my previous post I have translated Windows 7 SDK Direct2D “Advanced Geometries” examplefrom C++ to Delphi 2010 code. That was a lot of fun, so I have decided to continue the adventure in the realm of Direct2D programming and this…
News

JSON Types for Server Methods in DataSnap 2010

Author: Adrian Z1428 converter_1946 I am very happy I was granted permission to talk about the new features present in Delphi 2010 concerning database area. DataSnap 2010 (DS2010) extended the list of server method parameter types with the full suite of JSON types. It is now…
News

In LINQ, Beware of Skip(0)

Author: Marc Geldon Calling IQueryable<T>.Skip(0) seems like it should be “free.” In other words, since it will have no effect on the resulting data, there should be little to no performance cost for calling it. But this is demonstrably not true in LINQ to Entities, and it occurs to me that LINQ providers are not required to optimize it away. Therefore, it is probably a good idea…
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News

Using DayPilot with ASP.NET MVC

Author: Craig Stuntz I’m going to demonstrate how to use the open-source DayPilot Lite calendar control in an ASP.NET MVC application. I will discuss the capabilities of the control and consider the general problem of how to use controls designed for…
News

Using jqGrid with ASP.NET MVC: Deleting Records

Author: Craig Stuntz This is the fifth post in a series on using jqGrid with ASP.NET MVC. Today, we’re going to begin examining the grid’s editing features by implementing deletes. If you’re new to the series, you might want to start at the beginning. The delete…
News

Using jqGrid with ASP.NET MVC: Search and Formatting

Author: Craig Stuntz This is the fourth post in a series on using jqGrid with ASP.NET MVC. Today, we’re going to examine search and formatting results. I will implement a search feature and fix the problem with formatting date columns which I observed in the last post. I’ve updated the demo solution with these new features, and also fixed a bug reported by Andrey last time. If…
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