d-fens GmbH
Audit and Consulting of Information Systems and Business Processes
I am a passionate software engineer and integration architect, living in Switzerland and interested in DevOps, DevSecOps, application security, web development and Azure.
After playing around with the Office 365/Exchange 2016 REST API I decided to summarize the knowledge and the experiences I gained in this blog post. The goal of the tryout […]
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 […]
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 […]
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 […]
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 […]
Today my boss asked me to extend the session lifetime for Outlook Web App to have a lower login frequency. As described in the article Session timeouts for Office 365 the session timeout is set to 6 hours by default. To change the session timeout the following steps have to be executed. Connect to Exchange Online using PowerShell Open a […]
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 […]
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 […]
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 […]
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 […]
Last week I had to set up an Azure File Share for data transfer purposes. Clients will upload data to the Azure File Share and the data will then be […]
There is a bug in Task Scheduler of Windows 10. If the network condition of a Scheduled Task gets enabled and a specific network connection gets selected, the corresponding Scheduled […]
Beside the vision and the requirements you also have to have an idea how the WPF application should look like in the end. For that purpose we created a few mock ups during first exchange with the customer in the early stages of the project. In the same stage we also created a process diagram (BPMN) that shows all the […]
Before starting development we first had to set up a new WPF project. The projects target framework is .NET Framework 4.6.2 and we used Microsoft Visual Studio Community 2015 as […]
In the first half of 2017 we implemented a WPF project for one of our customers. The aim of the project was to develop a Surface Pro compatible desktop application for data collection in context of civil engineering. The application allows the user to create, save, edit and export protocols of specific buildings. Furthermore it’s possible to create a PDF […]
In a project for one of our customers we used Microsoft OneDrive for data synchronisation. The data gets collected on a tablet and the folder containing the data will be […]
