BindableProperty.CreateAttachedReadOnly Method
Definition
Important
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Overloads
CreateAttachedReadOnly(String, Type, Type, Object, BindingMode, BindableProperty+ValidateValueDelegate, BindableProperty+BindingPropertyChangedDelegate, BindableProperty+BindingPropertyChangingDelegate, BindableProperty+CoerceValueDelegate, BindableProperty+CreateDefaultValueDelegate)
Creates a new instance of the BindableProperty class for attached read-only properties.
public static Xamarin.Forms.BindablePropertyKey CreateAttachedReadOnly (string propertyName, Type returnType, Type declaringType, object defaultValue, Xamarin.Forms.BindingMode defaultBindingMode = Xamarin.Forms.BindingMode.OneWayToSource, Xamarin.Forms.BindableProperty.ValidateValueDelegate validateValue = default, Xamarin.Forms.BindableProperty.BindingPropertyChangedDelegate propertyChanged = default, Xamarin.Forms.BindableProperty.BindingPropertyChangingDelegate propertyChanging = default, Xamarin.Forms.BindableProperty.CoerceValueDelegate coerceValue = default, Xamarin.Forms.BindableProperty.CreateDefaultValueDelegate defaultValueCreator = default);static member CreateAttachedReadOnly : string * Type * Type * obj * Xamarin.Forms.BindingMode * Xamarin.Forms.BindableProperty.ValidateValueDelegate * Xamarin.Forms.BindableProperty.BindingPropertyChangedDelegate * Xamarin.Forms.BindableProperty.BindingPropertyChangingDelegate * Xamarin.Forms.BindableProperty.CoerceValueDelegate * Xamarin.Forms.BindableProperty.CreateDefaultValueDelegate -> Xamarin.Forms.BindablePropertyKeyParameters
- propertyName
- String
The name of the BindableProperty.
- returnType
- Type
The type of the property.
- declaringType
- Type
The type of the declaring object.
- defaultValue
- Object
The default value for the property.
- defaultBindingMode
- BindingMode
The BindingMode to use on SetBinding() if no BindingMode is given. This parameter is optional. Default is BindingMode.OneWay.
- validateValue
- BindableProperty.ValidateValueDelegate
A delegate to be run when a value is set. This parameter is optional. Default is null.
- propertyChanged
- BindableProperty.BindingPropertyChangedDelegate
A delegate to be run when the value has changed. This parameter is optional. Default is null.
- propertyChanging
- BindableProperty.BindingPropertyChangingDelegate
A delegate to be run when the value will change. This parameter is optional. Default is null.
- coerceValue
- BindableProperty.CoerceValueDelegate
A delegate used to coerce the range of a value. This parameter is optional. Default is null.
- defaultValueCreator
- BindableProperty.CreateDefaultValueDelegate
A Func used to initialize default value for reference types.
Returns
A newly created attached read-only BindableProperty.
Remarks
Attached properties are bindable properties that are bound to an object other than their parent. Often, they are used for child items in tables and grids, where data about the location of an item is maintained by its parent, but must be accessed from the child item itself.
Applies to
CreateAttachedReadOnly<TDeclarer,TPropertyType>(Expression<Func<BindableObject, TPropertyType>>, TPropertyType, BindingMode, BindableProperty.ValidateValueDelegate<TPropertyType>, BindableProperty.BindingPropertyChangedDelegate<TPropertyType>, BindableProperty.BindingPropertyChangingDelegate<TPropertyType>, BindableProperty.CoerceValueDelegate<TPropertyType>, BindableProperty.CreateDefaultValueDelegate<BindableObject, TPropertyType>)
Caution
CreateAttachedReadOnly<> (generic) is obsolete as of version 2.1.0 and is no longer supported.
Deprecated. Do not use.
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
[System.Obsolete("CreateAttachedReadOnly<> (generic) is obsolete as of version 2.1.0 and is no longer supported.")]
public static Xamarin.Forms.BindablePropertyKey CreateAttachedReadOnly<TDeclarer,TPropertyType> (System.Linq.Expressions.Expression<Func<Xamarin.Forms.BindableObject,TPropertyType>> staticgetter, TPropertyType defaultValue, Xamarin.Forms.BindingMode defaultBindingMode = Xamarin.Forms.BindingMode.OneWayToSource, Xamarin.Forms.BindableProperty.ValidateValueDelegate<TPropertyType> validateValue = default, Xamarin.Forms.BindableProperty.BindingPropertyChangedDelegate<TPropertyType> propertyChanged = default, Xamarin.Forms.BindableProperty.BindingPropertyChangingDelegate<TPropertyType> propertyChanging = default, Xamarin.Forms.BindableProperty.CoerceValueDelegate<TPropertyType> coerceValue = default, Xamarin.Forms.BindableProperty.CreateDefaultValueDelegate<Xamarin.Forms.BindableObject,TPropertyType> defaultValueCreator = default);static member CreateAttachedReadOnly : System.Linq.Expressions.Expression<Func<Xamarin.Forms.BindableObject, 'PropertyType>> * 'PropertyType * Xamarin.Forms.BindingMode * Xamarin.Forms.BindableProperty.ValidateValueDelegate<'PropertyType> * Xamarin.Forms.BindableProperty.BindingPropertyChangedDelegate<'PropertyType> * Xamarin.Forms.BindableProperty.BindingPropertyChangingDelegate<'PropertyType> * Xamarin.Forms.BindableProperty.CoerceValueDelegate<'PropertyType> * Xamarin.Forms.BindableProperty.CreateDefaultValueDelegate<Xamarin.Forms.BindableObject, 'PropertyType> -> Xamarin.Forms.BindablePropertyKeyType Parameters
- TDeclarer
The type of the declaring object.
- TPropertyType
The type of the property.
Parameters
- staticgetter
- Expression<Func<BindableObject,TPropertyType>>
An expression identifying a static method returning the value of the property using this BindableProperty as backing store.
- defaultValue
- TPropertyType
Default value for the BindableProperty.
- defaultBindingMode
- BindingMode
The BindingMode to use on SetBinding() if no BindingMode is given. This parameter is optional. Default is BindingMode.OneWay.
- validateValue
- BindableProperty.ValidateValueDelegate<TPropertyType>
A delegate to be run when a value is set. This parameter is optional. Default is null.
- propertyChanged
- BindableProperty.BindingPropertyChangedDelegate<TPropertyType>
A delegate to be run when the value has changed. This parameter is optional. Default is null.
- propertyChanging
- BindableProperty.BindingPropertyChangingDelegate<TPropertyType>
A delegate to be run when the value will change. This parameter is optional. Default is null.
A delegate used to coerce the range of a value. This parameter is optional. Default is null.
- defaultValueCreator
- BindableProperty.CreateDefaultValueDelegate<BindableObject,TPropertyType>
A Func used to initialize default value for reference types.
Returns
A newly created BindablePropertyKey.
- Attributes