Author: Pawe Gowacki
Have you ever written a component in Delphi? Reusable components are the corner-stone of rapid application development and important part of Delphi success on the market. Being able to manipulate an instance of a class at design-time is where Delphi shines!
One day I was looking at mocking up a FireMonkey turn-based board game. A screen with a board and names of two opponents.
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…
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…
Author: Michael K22532
JSON support has been introduced in Delphi 2010 as a part of DBExpress database driver architecture, but of course JSON support is not limited to just database applications. JSON is similar to XML as both are text-based data interchange formats.
Delphi 6 introduced “TXMLDocument” component and the “XML Data Binding Wizard” to make it easier to work with XML documents…
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…
