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Dec 02, 2010 · The ninth source in the list of sources for the base value of a dependency property is a theme style. A property gets its base value from a theme style if the value comes from a setter in the default style for a control. Every control that ships with WPF has a default style that dictates its appearance, also known as a theme style.
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Jul 31, 2011 · Every WPF objects that is inherited from DependencyObject inherently supports Dependency property containers within it. That means you can define your own dependency property in your code which can take part in some of the interesting features of WPF like Binding, Styles, Triggers, Animation, Property Inheritence etc.
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Dec 24, 2010 · When you set a dependency property to some value and it is coerced, the original base value that you set is remembered. If you remove the conditions that led to the coercion, the property will take on the non-coerced value that you originally set. Suppose we have a Person class with an Age property and a boolean SuperOld property.
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Dependency Property Value Precedence. 03/30/2017; 14 minutes to read; In this article. This topic explains how the workings of the Windows Presentation Foundation (WPF) property system can affect the value of a dependency property, and describes the precedence by which aspects of the property system apply to the effective value of a property.
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Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value.
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Nov 18, 2017 · DefaultValue is the default value the porperty holds. And PropertyChangedCallback represents the callback that is invoked when the effective property value of this dependency property changes. Now, as explained earlier, the Dependency property is wrapped around the inner DependencyObject implementation using a set of getter & setter methods.
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Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value.
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Dependency Property Value Precedence. 03/30/2017; 14 minutes to read; In this article. This topic explains how the workings of the Windows Presentation Foundation (WPF) property system can affect the value of a dependency property, and describes the precedence by which aspects of the property system apply to the effective value of a property.
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This FAQ explains the topic "How can I mark the default value of a custom dependency property to be false?" ... WPF | Category: Dependency Property. Here is an example :
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Oct 23, 2009 · The constructor for PropertyMetadata we’re using to supply a default value has this declaration: public PropertyMetadata(Object defaultValue) In order to handle any type of property, the dependency property system in WPF uses System.Object to pass the default value.

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wpf documentation: Attached dependency properties. Example When to use. An attached property is a dependency property that can be applied to any DependencyObject to enhance the behavior of various controls or services that are aware of the property's existence. Nov 25, 2019 · Declare and register dependency property; For registered property set value using SetValue method and get value using GetValue method; Write a method to handle change done on dependency property Dec 25, 2010 · You can do this to some extent by overriding the metadata for a dependency property. Overriding the metadata in the child class doesn’t change the behavior of the dependency property in the parent class. In the example below, we create a new class and override metadata for several properties, changing the default values. wpf documentation: Attached dependency properties. Example When to use. An attached property is a dependency property that can be applied to any DependencyObject to enhance the behavior of various controls or services that are aware of the property's existence. Jul 25, 2008 · Most probably you are not trying to utilize this static feature of the WPF dependency properties so you can eliminate it by moving the default value declaration from the DependencyProperty.Register(...) call to the Foo constructor: And here is the debugger once again (Make Object ID also states this is a separate object now {#2}): Voila! Nov 20, 2009 · A color won't work as a brush, so your default value will fail, thus the DP will use the type default instead of yours. This should work: new PropertyMetadata(new SolidColorBrush(Color.FromRgb(115, 115, 115))) Dec 02, 2010 · The ninth source in the list of sources for the base value of a dependency property is a theme style. A property gets its base value from a theme style if the value comes from a setter in the default style for a control. Every control that ships with WPF has a default style that dictates its appearance, also known as a theme style. Feb 11, 2010 · In the line above the ObservableCollection created as a Default-Value for the Dependency-Property is of course a static one, because the Dependency-Property is stored in a static variable and as you see in the code-snippet above it is initialized in the static constructor of the PieMenu-class. There’s no instance around at this point.


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This FAQ explains the topic "How can I mark the default value of a custom dependency property to be false?" ... WPF | Category: Dependency Property. Here is an example :

  1. Unable to override default value of custom control dependency property I'm a bit new to working with xaml and I'm trying to create a button that changes content value based on an int input. It displays the correct information, but only for the default value specified.
  2. Nov 18, 2017 · DefaultValue is the default value the porperty holds. And PropertyChangedCallback represents the callback that is invoked when the effective property value of this dependency property changes. Now, as explained earlier, the Dependency property is wrapped around the inner DependencyObject implementation using a set of getter & setter methods. Feb 11, 2010 · In the line above the ObservableCollection created as a Default-Value for the Dependency-Property is of course a static one, because the Dependency-Property is stored in a static variable and as you see in the code-snippet above it is initialized in the static constructor of the PieMenu-class. There’s no instance around at this point. Dec 24, 2010 · When you set a dependency property to some value and it is coerced, the original base value that you set is remembered. If you remove the conditions that led to the coercion, the property will take on the non-coerced value that you originally set. Suppose we have a Person class with an Age property and a boolean SuperOld property. Apr 12, 2010 · Default Values Providing a default value for a.NET property makes sense in certain circumstances and it is reasonable feature to have in WPF Dependency Property's too. So let's learn a little more about how default values work in WPF Dependency Properties.
  3. Nov 09, 2010 · You can set the value of a dependency property from either code or XAML and that local value will override any inherited or default values. You can also clear a property value using the DependencyObject.ClearValue method. This will undo any setting of a local property value, so that the value reverts to the inherited or default value.
  4. Dec 24, 2010 · When you set a dependency property to some value and it is coerced, the original base value that you set is remembered. If you remove the conditions that led to the coercion, the property will take on the non-coerced value that you originally set. Suppose we have a Person class with an Age property and a boolean SuperOld property.
  5. Jul 25, 2008 · Most probably you are not trying to utilize this static feature of the WPF dependency properties so you can eliminate it by moving the default value declaration from the DependencyProperty.Register(...) call to the Foo constructor: And here is the debugger once again (Make Object ID also states this is a separate object now {#2}): Voila! Apr 12, 2010 · Default Values Providing a default value for a.NET property makes sense in certain circumstances and it is reasonable feature to have in WPF Dependency Property's too. So let's learn a little more about how default values work in WPF Dependency Properties.
  6. Instead, you specify the default value through the dependency property metadata. If your property is a reference type, the default value specified in dependency property metadata is not a default value per instance; instead it is a default value that applies to all instances of the type.
  7. The default values are stored once within the dependency property. Value inheritance When you access a dependency property the value is resolved by using a value resolution strategy. If no local value is set, the dependency property navigates up the logical tree until it finds a value.
  8. Jul 26, 2015 · The Dependency Property has been included in the framework keeping this point in mind. Dependency properties are static in nature. That means that they have some default value stored in the Dependency Property system. The Dependency Property system consists of a dictionary that is popularly known as a “property bag”.
  9. Dependency Properties. WPF introduces a new type of property called a dependency property, used throughout the platform to enable styling, automatic data binding, animation, and more. You might first meet this concept with skepticism, as it complicates the picture of .NET types having simple fields, properties, methods, and events. Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value.
  10. Dependency property: A property that is backed by a DependencyProperty. Dependency property identifier: A DependencyProperty instance, which is obtained as a return value when registering a dependency property, and then stored as a static member of a class. This identifier is used as a parameter for many of the APIs that interact with the WPF ...
  11. Feb 11, 2012 · I've defined a default value 'Brushes.White' public static readonly DependencyProperty SplitterColorProperty = DependencyProperty.Register(" SplitterColor", typeof (Brush), typeof (Splitter), new PropertyMetadata(Brushes.White, OnSplitterColorChanged)); This code changes the Color-Property of by oBorder Child. By defining its PropertyMetadata, a class can define the dependency property's behaviors, such as its default value and property system callbacks. Many dependency property classes already have default metadata established as part of their registration process. This includes the dependency properties that are part of the WPF API.

 

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Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Jobs Programming & related technical career opportunities Dependency Property Value Precedence. 03/30/2017; 14 minutes to read; In this article. This topic explains how the workings of the Windows Presentation Foundation (WPF) property system can affect the value of a dependency property, and describes the precedence by which aspects of the property system apply to the effective value of a property. Jul 26, 2015 · The Dependency Property has been included in the framework keeping this point in mind. Dependency properties are static in nature. That means that they have some default value stored in the Dependency Property system. The Dependency Property system consists of a dictionary that is popularly known as a “property bag”. Virtually all WPF controls make heavy use of dependency properties. A dependency property allows for the use of many WPF features that are not possible with standard CLR properties alone, including but not limited to support for styles, animations, data binding, value inheritance, and change notifications. The TextBox.Text property is a Oct 02, 2008 · Disclaimer: I am not working for WPF team, so the following statement is merely my personal understanding. Dependency property metadata (include default values etc) should be free threaded, because the property metadata registration process is always done in class or type constructor, the class constructor will be run in any thread.

This FAQ explains the topic "How can I mark the default value of a custom dependency property to be false?" ... WPF | Category: Dependency Property. Here is an example : Introduction. This post provides an example of how you can perform view related actions in response to a change to an existing dependency property, in this case the TextBlock.Text property, and how you can determine which action to take based on the difference between the old value and current value of this dependency property.

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By defining its PropertyMetadata, a class can define the dependency property's behaviors, such as its default value and property system callbacks. Many dependency property classes already have default metadata established as part of their registration process. This includes the dependency properties that are part of the WPF API. Nov 18, 2017 · DefaultValue is the default value the porperty holds. And PropertyChangedCallback represents the callback that is invoked when the effective property value of this dependency property changes. Now, as explained earlier, the Dependency property is wrapped around the inner DependencyObject implementation using a set of getter & setter methods. Dependency Property Value Precedence. 03/30/2017; 14 minutes to read; In this article. This topic explains how the workings of the Windows Presentation Foundation (WPF) property system can affect the value of a dependency property, and describes the precedence by which aspects of the property system apply to the effective value of a property.

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Default value is Center. Dependency property: TextAlignment.CenterTextAlignment.JustifyTextAlignment.LeftTextAlignment.Right: No: LabelFontSize: Gets or sets the font size of the label. Default value is 11. Dependency property: Double: No: LabelFontWeight: Gets or sets the font weight of the label. Default value is SemiBold. Dependency property ... Dec 13, 2010 · You should also define CLR properties in the new type that wrap the GetValue/SetValue calls to read/write dependency property values. Here’s an example, where we reuse the BirthYearProperty, originally defined in a Person class, in a new Dog class. Notice that we also provide a new default value. Nov 07, 2008 · Introduction. Dependency property is a major innovation of WPF. A dependency property has the same simple and familiar programming interface as a CLR property, but allows its value to be dynamically decided/changed by many factors, like other properties, styles, templates, data-binding, animation, element composition, class inheritance etc, and can be implemented to provide self-contained ... Dec 02, 2010 · The ninth source in the list of sources for the base value of a dependency property is a theme style. A property gets its base value from a theme style if the value comes from a setter in the default style for a control. Every control that ships with WPF has a default style that dictates its appearance, also known as a theme style. Dependency Property Callbacks and Validation. 03/30/2017; 7 minutes to read; In this article. This topic describes how to create dependency properties using alternative custom implementations for property-related features such as validation determination, callbacks that are invoked whenever the property's effective value is changed, and overriding possible outside influences on value ... Dec 02, 2010 · The ninth source in the list of sources for the base value of a dependency property is a theme style. A property gets its base value from a theme style if the value comes from a setter in the default style for a control. Every control that ships with WPF has a default style that dictates its appearance, also known as a theme style. Jul 25, 2008 · Most probably you are not trying to utilize this static feature of the WPF dependency properties so you can eliminate it by moving the default value declaration from the DependencyProperty.Register(...) call to the Foo constructor: And here is the debugger once again (Make Object ID also states this is a separate object now {#2}): Voila!

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In WPF applications, dependency property is a specific type of property which extends the CLR property. It takes the advantage of specific functionalities available in the WPF property system. A class which defines a dependency property must be inherited from the DependencyObject class.

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Register the property as readonly. How To Use Dependency Property. You can convert regular properties to dependency properties by applying DependencyPropertyAttribute to individual properties or a whole class. When you apply the attribute on a class, all the available properties will be converted to dependency properties.

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Register the property as readonly. How To Use Dependency Property. You can convert regular properties to dependency properties by applying DependencyPropertyAttribute to individual properties or a whole class. When you apply the attribute on a class, all the available properties will be converted to dependency properties. Dec 13, 2010 · You should also define CLR properties in the new type that wrap the GetValue/SetValue calls to read/write dependency property values. Here’s an example, where we reuse the BirthYearProperty, originally defined in a Person class, in a new Dog class. Notice that we also provide a new default value. Jul 26, 2015 · The Dependency Property has been included in the framework keeping this point in mind. Dependency properties are static in nature. That means that they have some default value stored in the Dependency Property system. The Dependency Property system consists of a dictionary that is popularly known as a “property bag”. Jul 25, 2010 · In general when you create a dependency object and pass the default value into it, the value will not be the default value for each instance of the object you create. Rather it will be the initial value for the Dependency property for the type it is registered with. The default values are stored once within the dependency property. Value inheritance When you access a dependency property the value is resolved by using a value resolution strategy. If no local value is set, the dependency property navigates up the logical tree until it finds a value. Nov 18, 2017 · DefaultValue is the default value the porperty holds. And PropertyChangedCallback represents the callback that is invoked when the effective property value of this dependency property changes. Now, as explained earlier, the Dependency property is wrapped around the inner DependencyObject implementation using a set of getter & setter methods. Gets or sets a factor for the zoom.Default value is 0.2. Dependency property: Double: No: Bounds: Gets or sets the bounds value which specifies the position of the root node in case of tree layout. CLR property: Thickness: No: IsPageEditable: Gets or sets a value indicating whether page is enabled or not.Default value is True. Dependency ...

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Register the property as readonly. How To Use Dependency Property. You can convert regular properties to dependency properties by applying DependencyPropertyAttribute to individual properties or a whole class. When you apply the attribute on a class, all the available properties will be converted to dependency properties. Introduction. This post provides an example of how you can perform view related actions in response to a change to an existing dependency property, in this case the TextBlock.Text property, and how you can determine which action to take based on the difference between the old value and current value of this dependency property. Mar 11, 2008 · Any given Dependency Property may have a default value as established by the property system registration of that particular property. See Dependency Property metadata . Now don't worry if you don't get some of these, we will be covering some of these in this article, and some more of these in subsequent articles in this WPF beginner's guide ... The solution I built consists of a WPF custom control library project. Then a 2nd WPF application project. Everything builds ok. But when I run the WPF application I get an error: "XamlParseException The type initializer threw an exception. Default value type does not match type of property 'ElementId'."

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The default values are stored once within the dependency property. Value inheritance When you access a dependency property the value is resolved by using a value resolution strategy. If no local value is set, the dependency property navigates up the logical tree until it finds a value. Jul 31, 2011 · Every WPF objects that is inherited from DependencyObject inherently supports Dependency property containers within it. That means you can define your own dependency property in your code which can take part in some of the interesting features of WPF like Binding, Styles, Triggers, Animation, Property Inheritence etc. Introduction. This post provides an example of how you can perform view related actions in response to a change to an existing dependency property, in this case the TextBlock.Text property, and how you can determine which action to take based on the difference between the old value and current value of this dependency property. Virtually all WPF controls make heavy use of dependency properties. A dependency property allows for the use of many WPF features that are not possible with standard CLR properties alone, including but not limited to support for styles, animations, data binding, value inheritance, and change notifications. The TextBox.Text property is a Oct 02, 2008 · Disclaimer: I am not working for WPF team, so the following statement is merely my personal understanding. Dependency property metadata (include default values etc) should be free threaded, because the property metadata registration process is always done in class or type constructor, the class constructor will be run in any thread. Nov 18, 2017 · DefaultValue is the default value the porperty holds. And PropertyChangedCallback represents the callback that is invoked when the effective property value of this dependency property changes. Now, as explained earlier, the Dependency property is wrapped around the inner DependencyObject implementation using a set of getter & setter methods. wpf binding dependency-properties default-value. share ... Browse other questions tagged wpf binding dependency-properties default-value or ask your own question. wpf binding dependency-properties default-value. share ... Browse other questions tagged wpf binding dependency-properties default-value or ask your own question. wpf documentation: Attached dependency properties. Example When to use. An attached property is a dependency property that can be applied to any DependencyObject to enhance the behavior of various controls or services that are aware of the property's existence.

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Dec 24, 2010 · When you set a dependency property to some value and it is coerced, the original base value that you set is remembered. If you remove the conditions that led to the coercion, the property will take on the non-coerced value that you originally set. Suppose we have a Person class with an Age property and a boolean SuperOld property. Nov 09, 2010 · You can set the value of a dependency property from either code or XAML and that local value will override any inherited or default values. You can also clear a property value using the DependencyObject.ClearValue method. This will undo any setting of a local property value, so that the value reverts to the inherited or default value. Nov 25, 2019 · Declare and register dependency property; For registered property set value using SetValue method and get value using GetValue method; Write a method to handle change done on dependency property Oct 09, 2018 · WPF has provided some extended services to the CLR property that we can collectively call Dependency Properties. A Dependency Property is a property whose value depends on the external sources, such as animation, data binding, styles, or visual tree inheritance. Not only this, but a Dependency Property also has the built-in feature of providing ... Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value. Dependency property: A property that is backed by a DependencyProperty. Dependency property identifier: A DependencyProperty instance, which is obtained as a return value when registering a dependency property, and then stored as a static member of a class. This identifier is used as a parameter for many of the APIs that interact with the WPF ... The default values are stored once within the dependency property. Value inheritance When you access a dependency property the value is resolved by using a value resolution strategy. If no local value is set, the dependency property navigates up the logical tree until it finds a value. Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value.

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Dependency property: A property that is backed by a DependencyProperty. Dependency property identifier: A DependencyProperty instance, which is obtained as a return value when registering a dependency property, and then stored as a static member of a class. This identifier is used as a parameter for many of the APIs that interact with the WPF ... Jul 25, 2008 · Most probably you are not trying to utilize this static feature of the WPF dependency properties so you can eliminate it by moving the default value declaration from the DependencyProperty.Register(...) call to the Foo constructor: And here is the debugger once again (Make Object ID also states this is a separate object now {#2}): Voila! Dependency Property Callbacks and Validation. 03/30/2017; 7 minutes to read; In this article. This topic describes how to create dependency properties using alternative custom implementations for property-related features such as validation determination, callbacks that are invoked whenever the property's effective value is changed, and overriding possible outside influences on value ...

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Dependency Property Value Precedence. 03/30/2017; 14 minutes to read; In this article. This topic explains how the workings of the Windows Presentation Foundation (WPF) property system can affect the value of a dependency property, and describes the precedence by which aspects of the property system apply to the effective value of a property. Nov 20, 2009 · A color won't work as a brush, so your default value will fail, thus the DP will use the type default instead of yours. This should work: new PropertyMetadata(new SolidColorBrush(Color.FromRgb(115, 115, 115))) Introduction. This post provides an example of how you can perform view related actions in response to a change to an existing dependency property, in this case the TextBlock.Text property, and how you can determine which action to take based on the difference between the old value and current value of this dependency property. Oct 15, 2008 · I guess that instead of assigning values to a Private element I would use the SetValue(ValueProperty,NewValue) instead. Since the DependencyProperty is ReadOnly anyway, I could modify it all I want with SetValue and ultimately it's returned through Value. Gets or sets the label font size. Default value is 11. Dependency property: Double: No: LabelFontWeight: Gets or sets the label font weight. Default value is SemiBold. Dependency property: FontWeight: No: LabelTextWrapping: Gets or sets the label text wrapping. Default value is NoWrap. Dependency property: TextWrapping.NoWrapTextWrapping ... In WPF applications, dependency property is a specific type of property which extends the CLR property. It takes the advantage of specific functionalities available in the WPF property system. A class which defines a dependency property must be inherited from the DependencyObject class. Dec 13, 2010 · You should also define CLR properties in the new type that wrap the GetValue/SetValue calls to read/write dependency property values. Here’s an example, where we reuse the BirthYearProperty, originally defined in a Person class, in a new Dog class. Notice that we also provide a new default value.

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Oct 02, 2008 · Disclaimer: I am not working for WPF team, so the following statement is merely my personal understanding. Dependency property metadata (include default values etc) should be free threaded, because the property metadata registration process is always done in class or type constructor, the class constructor will be run in any thread. Nov 25, 2019 · Declare and register dependency property; For registered property set value using SetValue method and get value using GetValue method; Write a method to handle change done on dependency property Oct 23, 2009 · The constructor for PropertyMetadata we’re using to supply a default value has this declaration: public PropertyMetadata(Object defaultValue) In order to handle any type of property, the dependency property system in WPF uses System.Object to pass the default value. Dependency Property Callbacks and Validation. 03/30/2017; 7 minutes to read; In this article. This topic describes how to create dependency properties using alternative custom implementations for property-related features such as validation determination, callbacks that are invoked whenever the property's effective value is changed, and overriding possible outside influences on value ... Jul 31, 2011 · Every WPF objects that is inherited from DependencyObject inherently supports Dependency property containers within it. That means you can define your own dependency property in your code which can take part in some of the interesting features of WPF like Binding, Styles, Triggers, Animation, Property Inheritence etc.

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Dec 02, 2010 · The ninth source in the list of sources for the base value of a dependency property is a theme style. A property gets its base value from a theme style if the value comes from a setter in the default style for a control. Every control that ships with WPF has a default style that dictates its appearance, also known as a theme style. The default values are stored once within the dependency property. Value inheritance When you access a dependency property the value is resolved by using a value resolution strategy. If no local value is set, the dependency property navigates up the logical tree until it finds a value. Oct 23, 2009 · The constructor for PropertyMetadata we’re using to supply a default value has this declaration: public PropertyMetadata(Object defaultValue) In order to handle any type of property, the dependency property system in WPF uses System.Object to pass the default value. Dec 09, 2009 · You have to define the dependency property to get the default value. You should do something like this. Private Shared myControlValueProperty As DependencyProperty _ = DependencyProperty.Register("Company", GetType(Integer), GetType(UserControl1), _ New PropertyMetadata("0")) Public Property myControlValue() As String Get Return GetValue(CompanyProperty) End Get Set(ByVal value As String ... Dec 13, 2010 · You should also define CLR properties in the new type that wrap the GetValue/SetValue calls to read/write dependency property values. Here’s an example, where we reuse the BirthYearProperty, originally defined in a Person class, in a new Dog class. Notice that we also provide a new default value. Dec 13, 2010 · You should also define CLR properties in the new type that wrap the GetValue/SetValue calls to read/write dependency property values. Here’s an example, where we reuse the BirthYearProperty, originally defined in a Person class, in a new Dog class. Notice that we also provide a new default value.