VisualElement.GetSizeRequest(Double, Double) VisualElement.GetSizeRequest(Double, Double) Method

Definition

Warning

This API is now obsolete.

Returns the SizeRequest of the element. Calling this method begins the measure pass of a layout cycle.

[System.Obsolete("OnSizeRequest is obsolete as of version 2.2.0. Please use OnMeasure instead.")]
public virtual Xamarin.Forms.SizeRequest GetSizeRequest (double widthConstraint, double heightConstraint);
abstract member GetSizeRequest : double * double -> Xamarin.Forms.SizeRequest
override this.GetSizeRequest : double * double -> Xamarin.Forms.SizeRequest
Parameters
widthConstraint
Double Double

The available width that a parent element can allocated to a child. Value will be between 0 and double.PositiveInfinity.

heightConstraint
Double Double

The available height that a parent element can allocated to a child. Value will be between 0 and double.PositiveInfinity.

Returns

A SizeRequest which contains a requested size and a minimum size.

Remarks

Calling GetSizeRequest causes a measure pass to occur for the subtree of elements it is called on. It is ideal to only call GetSizeRequest when needed as excessive calls can negatively impact the performance of your app. Overriding GetSizeRequest should only be done if you want to ignore Width/HeightRequest. More likely a subclass would wish to override Xamarin.Forms.VisualElement.OnSizeRequest.

Applies to