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Blend for Visual Studio helps you design XAML-based Windows and Web applications. It provides the same basic XAML design experience as Visual Studio and adds visual designers for advanced tasks such as animations and behaviors. For a comparison between Blend and Visual Studio, see Design XAML in Visual Studio and Blend for Visual Studio.

Blend for Visual Studio is a component of Visual Studio. To install Blend, in the Visual Studio Installer choose either the Universal Windows Platform development or .NET desktop development workload. Both of these workloads include the Blend for Visual Studio component.

If you're new to Blend for Visual Studio, take a moment to become familiar with the unique features of the workspace. This topic takes you on a quick tour.

Tools panel

You can use the Tools panel in Blend for Visual Studio to create and modify objects in your application. The Tools panel appears on the left-hand side of the XAML designer when you have a .xaml file open.

You create the objects by selecting a tool and drawing on the artboard with your mouse.

Tip

Some of the tools in the Tools panel have variations, for example, instead of a rectangle, you can choose an ellipse or a line. To access these variations, right-click or click and hold on the tool.

Selection tools

Select objects and paths. Use the Direct Selection tool to select nested objects and path segments.

View tools

Adjust the view of the artboard, such as for panning and zooming.

Brush tools

Work with the visual attributes of an object, such as transforming a brush or applying a gradient.

Object tools

Draw the most common objects on the artboard, such as paths, shapes, layout panels, text, and controls.

Asset tools

Access the Assets window and show the most recently used asset from the library.

Assets window

The Assets window contains all the available controls and is similar to the Toolbox in Visual Studio. In addition to controls, you'll find everything you can add to your artboard in the Assets window, including styles, media, behaviors, and effects. To open the Assets window, choose View > Assets Window or press Ctrl+Alt+X.

Enter text in the Search Assets box to filter the list of assets.
Switch between Grid mode and List mode view view of assets by using the buttons at the top right.

Objects and Timeline window

Use this window to organize the objects on your artboard and, if you want, to animate them. To open the Objects and Timeline window, choose View > Document Outline. In addition to the functionality provided in the Document Outline window in Visual Studio, the Objects and Timeline window in Blend for Visual Studio has a timeline composition area on the right. Use the timeline when you're creating and editing animations.

Use the storyboard-related buttons to create, delete, close, or select a storyboard. Use the Timeline composition area on the right to view the timeline and move keyframes.

Hover over each button in the window to learn more about the available functionality.

Overview

The XAML Previewer shows you how your Xamarin.Forms XAML page will look on iOS and Android. When you make changes to your XAML, you'll see them previewed immediately alongside your code. The XAML Previewer is available in Visual Studio and Visual Studio for Mac.

Getting started

Visual Studio 2019

You can open the XAML Previewer by clicking the arrows on the split view pane. If you want to change the default split view behavior, use the Tools > Options > Xamarin > Xamarin.Forms XAML Previewer dialog. In this dialog, you can select the default document view and the split orientation.

When you open a XAML file, the editor will open either full-sized or next to the previewer, based on the settings selected in the Tools > Options > Xamarin > Xamarin.Forms XAML Previewer dialog. However, the split can be changed for each file in the editor window.

XAML preview controls

Choose whether you want to see your code, the XAML Previewer, or both by selecting these buttons on the split view pane. The middle button swaps what side the Previewer and your code are on:

You can change whether the screen is split vertically or horizontally, or collapse one pane altogether:

Enable or disable the XAML Previewer

You can turn the XAML Previewer off in the Tools > Options > Xamarin > Xamarin.Forms XAML Previewer dialog by selecting Default XML Editor as your Default XAML Editor. This also turns off the Document Outline, Property Panel, and XAML Toolbox. To turn the XAML Previewer and those tools back on, change your Default XAML Editor to Xamarin.Forms Previewer.

Visual Studio for Mac

The Preview button is displayed on the editor when you open a XAML page. Show or hide the Previewer by pressing the Preview or Split buttons in the bottom-left of any XAML document window:

Note

In older versions of Visual Studio for Mac, the Preview button was located in the top-right of the window.

Enable or Disable the XAML Previewer

You can turn the XAML Previewer off in the Visual Studio > Preferences > Text Editor > XAML dialog by selecting Default XML Editor as your Default XAML Editor. This also turns off the Document Outline, Property Panel, and XAML Toolbox. To turn the XAML Previewer and those tools back on, change your Default XAML Editor to Xamarin.Forms Previewer.

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XAML previewer options

The options along the top of the preview pane are:

Android – show the Android version of the screen
iOS – show the iOS version of the screen (Note: If you're using Visual Studio on Windows, you must be paired to a Mac to use this mode)
Device - Drop-down list of Android or iOS devices including resolution and screen size
Portrait (icon) – uses portrait orientation for the preview
Landscape (icon) – uses landscape orientation for the preview

Detect design mode

The static DesignMode.IsDesignModeEnabled property tells you if the application is running in the previewer. Using it, you can specify code that will only execute when the application is or isn't running in the previewer:

This property is useful if you initialize a library in your page constructor that fails to run at design time.

Troubleshooting

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Check the issues below and the Xamarin Forums,if the Previewer isn't working.

XAML Previewer isn't showing or shows an error