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 […]

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. […]

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 in WPF ViewModels for client side validation. Fortunately we found such a solution, which I would like to describe in this blog post. Implement IDataErrorInfo […]

[HOWTO] Adjust Outlook Web App Session Timeout

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 […]

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 the corresponding ComboBox or ListBox. Because the enum values do not always have descriptive names or because they are language specific, it’s usually more appropriate […]

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. […]

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 […]

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 […]

[HOWTO] Access Azure File Share in PowerShell Script executed by a Scheduled Task

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 moved from the share to a local drive by a PowerShell script. The PowerShell script gets invoked every 15 minutes by a Scheduled Task. The […]

[Bug] “Task Scheduler service is not available” Error, if specifying Network Connection Condition

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 Task will not run anymore. To reproduce the problem open properties of any Scheduled Task (right click on Scheduled Task -> Properties) and switch to […]