I'm trying to learn how to use WPF but in the book I'm using it doesn't explain how to expose a custom control to the xaml document in Visual Studio.
Visual Studio has some text about including the namespace but I haven't been able to get it to work.
CustomCanvas Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Position = WpfApplication1.PositionUInt;
namespace WpfApplication1
{
/// <summary>
/// Follow steps 1a or 1b and then 2 to use this custom control in a XAML file.
///
/// Step 1a) Using this custom control in a XAML file that exists in the current project.
/// Add this XmlNamespace attribute to the root element of the markup file where it is
/// to be used:
///
/// xmlns:MyNamespace="clr-namespace:WpfApplication1"
///
///
/// Step 1b) Using this custom control in a XAML file that exists in a different project.
/// Add this XmlNamespace attribute to the root element of the markup file where it is
/// to be used:
///
/// xmlns:MyNamespace="clr-namespace:WpfApplication1;assembly=WpfApplication1"
///
/// You will also need to add a project reference from the project where the XAML file lives
/// to this project and Rebuild to avoid compilation errors:
///
/// Right click on the target project in the Solution Explorer and
/// "Add Reference"->"Projects"->[Browse to and select this project]
///
///
/// Step 2)
/// Go ahead and use your control in the XAML file.
///
/// <MyNamespace:CustomControl1/>
///
/// </summary>
///
class DrawingCanvas : Canvas
{
private List<Visual> visuals = new List<Visual>();
protected override int VisualChildrenCount
{
get
{
return visuals.Count;
}
}
protected override Visual GetVisualChild(int index)
{
return visuals[index];
}
public void AddVisual(Visual visual)
{
visuals.Add(visual);
base.AddVisualChild(visual);
base.AddLogicalChild(visual);
}
public void DeleteVisual(Visual visual)
{
visuals.Remove(visual);
base.RemoveVisualChild(visual);
base.RemoveLogicalChild(visual);
}
}
}Current basic xaml document, just trying to see how to add the custom control
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
</Window>