Hi there, I have created a WPF usercontrol and added some properties, which when I set in XAML update on the control as expected. However my control has a slider which I want to bind to in the designer when I add the control. I have added a dependancy property but am having no luck with the binding! Please help if you know the answer.
Below is the code and the project, zipped up
WPF control
CODE
<UserControl x:Class="WPFBindingExample.TestControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Height="150" Width="300" BorderBrush="Red" BorderThickness="2">
<Grid Name="controlGrid" Background="Yellow">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Slider Name="slider" VerticalAlignment="Center" TickPlacement="BottomRight"/>
<Label Name="valueLabel" Grid.Row="1" Content="{Binding ElementName=slider, Path=Value}"/>
</Grid>
</UserControl>
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;
namespace WPFBindingExample
{
/// <summary>
/// Interaction logic for TestControl.xaml
/// </summary>
public partial class TestControl : UserControl
{
/// <summary>
/// Get or set the max value
/// </summary>
public Double Max
{
get { return this.slider.Maximum; }
set { this.slider.Maximum = value; }
}
/// <summary>
/// Get or set the min value
/// </summary>
public Double Min
{
get { return this.slider.Minimum; }
set { this.slider.Minimum = value; }
}
/// <summary>
/// Get or set the tick frequency
/// </summary>
public Double TickFrequency
{
get { return this.slider.TickFrequency; }
set { this.slider.TickFrequency = value; }
}
/// <summary>
/// Get or set the value this control represents
/// </summary>
public Double Value
{
get { return this.value; }
set { this.value = value; }
}
/// <summary>
/// Get or set the value this control represents
/// </summary>
private Double value;
/// <summary>
/// Register proerty
/// </summary>
public static DependencyProperty ValueBindingProperty = DependencyProperty.Register("Value", typeof(Double), typeof(TestControl));
public TestControl()
{
InitializeComponent();
}
}
}
And the implemtation XAML
CODE
<Window x:Class="WPFBindingExample.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:this="clr-namespace:WPFBindingExample"
Title="Window1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="200"/>
</Grid.RowDefinitions>
<Slider Name="valueSimulatorSlider" Value="5" Minimum="2" Maximum="10" TickPlacement="BottomRight"/>
<this:TestControl x:Name="testControl1" Max="5" Min="1" TickFrequency="0.5" Grid.Row="1" Value="{Binding ElementName=valueSimulatorSlider, Path=Value}"/>
</Grid>
</Window>
This is not my actual control I am trying to create, but a simplified version to demo my problem.
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29 Jun, 2009 - 06:15 AM
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