Author: Eusebio M40205
The problem
appeared when discussing “Scalability of enterprise DBMS-targeted systems” (in English on massive demand in comments) with Dmitriy Kouzmenko, Russian expert in InterBase since its origin. Then this occasional topic called more interest, so now I have to give some light to the this. The initial idea was how to make a user press “backup db”…
VCL App calling a FireMonkey DLL
We have had a lot of questions on the road show tour about how to mix Fire Monkey and VCL. Although this is not officially supported, a number of blogs have started to appear with ways to do this.
One way that is appropriate to add additional…
Reading and writing files from an iOS FireMonkey application
October 4, 2011
Author: dragonhome
Here’s an example of how you can read and write files in your iOS FireMonkey application.
Enjoy!
{$IFDEF FPC}
var
content : NSString;
{$ENDIF}
{$IFDEF FPC}
function MyFileName : NSString;
var
paths : NSArray;
fileName : NSString;
begin
paths :=…
LiveBindings: Fill a TListBox from a TClientDataSet at design time
September 30, 2011
Author: Jim T1392
TBindList can iterate throughthe records in a TClientDataSet and fill a TListBox. Here is how toconfigure TBindListin the designer.
Drop a TClientDataSet and a TDataSource on a form. Load some data into the dataset such as biolife.xml (Right click ClientDataSet1, choose “Load from MyBase table…”, browse to thesample data…
Author: Tóth Erik
Delphi XE2 is probably the most significant release since Delphi 1. The number of new features is amazing and probably the biggest, most important one is FireMonkey – a brand new business application development platform that let you use Delphi…
Author: Craig Stuntz
I helped another developer debug an interesting problem this morning. Let’s see if you can spot the problem. The code in question looked something like this simplified version containing only enough code to show the problem:
public void…
How to start a programming career with Delphi XE and C++Builder XE Starter Editions
February 4, 2011
Over the years, one of the recurring conversations has been around how to get started in computer programming, what language to learn first and how to prepare for a career. There have been numerous articles, blog posts, conference talks, videos, white papers and studies done. Colleges,placement centers and employment agenciesalso offer advice to…
Author: Craig Stuntz
In an application which uses the Entity Framework, you may see the following error at runtime:
MetadataException: Unable to load the specified metadata resource
The cause of this error is a missing or malformed Entity Framework connection string. In…
Author: Pawe Gowacki
it is not a big discovery that all applications are running in the environment provided by the underlying operating system. Delphi is well-known for its rapid application development capabilities. The latest version of Delphi – Delphi 2010 –…
Author: Craig Stuntz
If you have a list, array, or query in a C#/LINQ application and need to check and see if the list is empty, the correct way to do this is to use the Any() extension method:
if (q.Any())
{
Similarly, you can check to see if any elements in the list meet a certain condition:
if (q.Any(i => i.IsSpecial))
{
If the query provider is something like LINQ to Entities…
