Delphi FireDAC datasets offer a quick and easy sorting feature, through the property “IndexFieldNames” in which you list the field names to use as an index, and you can optionally specify sorting options for each field.
Continue reading “Sorting records in Delphi datasets”Replace strings in Delphi dataset records
How to replace a string quickly in the whole dataset ? How to create a fast replace dialog for your app’s datasets ?
In this tutorial, we will explains the right procedure to implement a replace feature for your Delphi datasets.
Continue reading “Replace strings in Delphi dataset records”Difference between adding a unit to the interface or the implementation section
Object Pascal units have two sections (interface and implementation), and as you can see in many source code, each section can have distinct items (uses, types, variables, and constants).
So, which section is suitable for putting a unit as uses ?
Continue reading “Difference between adding a unit to the interface or the implementation section”Creating and extracting ZIP archives in Delphi
Since version XE2, Delphi is shipped with the built-in unit “System.Zip” for creating, editing and extracting ZIP compressed files. It is based on the RTL, and it can work slightly with VCL and FMX frameworks on all supported targets.
In this tutorial, we will show you what are the abilities of this unit and how to use it properly.
Continue reading “Creating and extracting ZIP archives in Delphi”Using the Filter in Delphi datasets
One of the best implemented features in Delphi datasets is the filter (records filtering). This built-in tool work by combining SQL filtering commands and string options like case sensitivity.
In this quick tutorial, will show you how to use the filter effectively.
Continue reading “Using the Filter in Delphi datasets”Create an indexed list from dataset in Delphi
In apps development, there many times when you have a large dataset filled with records. And you want to create a list of the items used in the records, without repeating. Like, for example, making a list of countries visited by the people in your dataset.
In this tutorial, we will show a good way to do that.
Continue reading “Create an indexed list from dataset in Delphi”