Using EntityFramework with Sqlite InMemory, DbConcurrency and Migrations
Using EntityFramework with Sqlite in-memory and concurrency support, that is fully unit-testable and supports migrations.
[HOWTO] Create Model Document using Sparx Enterprise Architect API
This blog post is about how to create model documents by using the Sparx Enterprise Architect (EA) API. Model documents are part of EA Virtual Documents and are modeled as child elements of report packages. Therefore the creation of model documents described hereafter requires an existing report package. Of course, report packages can also be created using the Sparx EA […]
Converting notes of Sparx Enterprise Architect custom scripts from XML into C# object
While I was working on a feature for an Enterprise Architect (EA) Add-In I had to get information about the scripts, which are stored in EA. The scripts are stored in table t_script and the information I needed was Name and Language. Both properties reside inside the Notes column. Selecting Notes of table t_script with the following SQL query in […]
[HOWTO] Use Sparx Enterprise Architect API method Repository.InvokeConstructPicker
To implement a feature for an Enterprise Architect (EA) Add-In I needed to show a dialog to the user, which allows him to select a package. The repository class provides a method called InvokeConstructPicker to do so. It seemed to be pretty simple. It was, but you have to consider a small detail, which I did not do in the […]
WPF Series -13- Advanced Installer
The last post in this series deals with the packaging of a WPF application. To simplify the installation of our WPF application we decided to package the application as MSI […]
WPF Series -12- Global Exception Logging
During development and debugging of our WPF application some exceptions occurred which were not caught by the code. Such unhandled exceptions are not logged automatically. In order to obtain information about any unhandled exceptions in production and to simplify error analysis, we looked for a way to handle and log unhandled exceptions. After some research we ended up with the […]
WPF Series -11- Custom MetroDialog
After a long break it’s finally time to continue with the WPF series. Today I’ll show you how we implemented a custom metro dialog. Our dialog contains 2 comboboxes and […]
WPF Series -10- InkCanvas with initial StrokeCollection
One of the requirements our WPF project had to meet describes the ability to create a sketch of the sewage shaft for which data is collected. The functional acceptance criteria […]
WPF Series -9- CustomListBox
When we used ListBox controls in our WPF project we faced the same problem as described in the previous post. Like DataGrid, ListBox control also has a property called SelectedItems, which isn’t a dependency property and therefore not bindable too. This post shows how ListBox control can be extended with a bindable version of the SelectedItems property. First we have […]
WPF Series -8- CustomDataGrid
According to MVVM pattern the ViewModel interacts with the Model but doesn’t know anything about its View. As a result dependency properties of controls get bound to ViewModel properties by specifying bindings in the corresponding View (XAML). DataGrid control has a property called SelectedItems, which in multi selection mode holds the items that are selected. Unfortunately SelectedItems of DataGrid is […]
WPF Series -7- ViewModel Validation using DataAnnotations
As we often use Data Annotations for basic validation purposes in context of C#/.NET applications (i.e. required, max length, …), we searched for a solution that allows using Data Annotations […]
[HOWTO] React to Unhandled Exceptions in UWP
While developing an UWP application I wanted to log unhandled exceptions. My coach mentioned that in WPF you can register a exception handler to handle unhandled exceptions globally. In UWP it works exactly the same way. Add Unhandled Exception Handler NOTE: This solution does not prevent your app from crashing and exiting. This solution only lets you react to unhandled […]
WPF Series -6- Globalization of Enums
In the previous blog post of this series I wrote about binding ComboBox or ListBox to an enum. Using just the approach described there exposes the enum values directly in […]
WPF Series -5- Binding ComboBox or ListBox to Enum
In our WPF application we wanted to bind ComboBox and ListBox controls to enums. The WPF way to set up such a binding is described here. This solution works absolutely fine but it requires the definition of an ObjectDataProvider for every enum. This in turn leads to lower maintainability and the code is not reusable. Due to these disadvantages we […]
WPF Series -4- MahApps.Metro and MahApps.Metro.Resources
To have a modern look and feel we decided to align our WPF application to Microsoft Metro style. To achieve this, we used the open source toolkit MahApps.Metro. MahApps.Metro is a toolkit for creating Metro / Modern UI styled WPF applications. The MahApps.Metro project was started back in 2011 by Paul Jenkins. The source is available on GitHub (see MahApps.Metro […]
WPF Series -3- MVVM Pattern
As mentioned in the previous post of this series the WPF application we implemented follows the MVVM pattern. MVVM stands for Model-View-ViewModel. The MVVM patterns intent is to provide a clean separation of concerns between UI and the business logic. It can be used on all XAML platforms. About MVVM Pattern Microsoft describes the motivation for MVVM pattern as follows […]
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