After using samples from this question I’ve made complete version of pan & zoom app with proper zooming relative to mouse pointer. All pan & zoom code has been moved to separate class called ZoomBorder. ZoomBorder.cs using System.Linq; using System.Windows; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Media; namespace PanAndZoom { public class ZoomBorder : Border { … Read more
The ConverterParameter property can not be bound because it is not a dependency property. Since Binding is not derived from DependencyObject none of its properties can be dependency properties. As a consequence, a Binding can never be the target object of another Binding. There is however an alternative solution. You could use a MultiBinding with … Read more
A StaticResource will be resolved and assigned to the property during the loading of the XAML which occurs before the application is actually run. It will only be assigned once and any changes to resource dictionary ignored. A DynamicResource assigns an Expression object to the property during loading but does not actually lookup the resource … Read more
Here’s a workaround for Binding Columns in the DataGrid. Since the Columns property is ReadOnly, like everyone noticed, I made an Attached Property called BindableColumns which updates the Columns in the DataGrid everytime the collection changes through the CollectionChanged event. If we have this Collection of DataGridColumn’s public ObservableCollection<DataGridColumn> ColumnCollection { get; private set; } … Read more
If you try to set the DataGrid.CellStyle the DataContext will be the row, so if you want to change the colour based on one cell it might be easiest to do so in specific columns, especially since columns can have varying contents, like TextBlocks, ComboBoxes and CheckBoxes. Here is an example of setting all the … Read more
First of all, DataGridTextColumn (or any other supported dataGrid column) does not lie in the Visual tree of the DataGrid. Hence, by default it doesn’t inherit the DataContext of the DataGrid. However, it works for Binding DP only and for no other DP’s on DataGridColumn. Since they don’t lie in the same VisualTree, any attempt … Read more
Let me answer to your question in three parts. I’m wondering what is “cs.txtCompanyID” in your example? Is it a TextBox control? If yes, then you are on a wrong way. Generally speaking it’s not a good idea to have any reference to UI in your ViewModel. You can ask “Why?” but this is another … Read more
If the binding needs to be two-way, you must supply a path. There’s a trick to do two-way binding on a static property, provided the class is not static : declare a dummy instance of the class in the resources, and use it as the source of the binding. <Window.Resources> <local:VersionManager x:Key=”versionManager”/> </Window.Resources> … <TextBox … Read more
How do I get a TextBox to only accept numeric input in WPF?
2015 update with clear instructions In Visual Studio 2013, you can get the default ControlTemplate of a control in a few simple steps. In the WPF designer, select the relevant control, or place the mouse cursor on the relevant control in the XAML. Press F4 to open the Properties Window. Open the Miscellaneous category to … Read more