Click here to Skip to main content
13,558,244 members
Click here to Skip to main content
Add your own
alternative version

Tagged as


2 bookmarked
Posted 27 Feb 2010
Licenced CPOL

Detect Design Time Mode in Silverlight

, 27 Feb 2010
Rate this:
Please Sign up or sign in to vote.
In order to detect whether your application is executing in a designer you can either use the GetIsInDesignMode method of DesignerProperties,or the Dependency Property metadata directly like so:C#:bool designTime = (bool)DesignerProperties.IsInDesignModeProperty.GetMetadata( ...
In order to detect whether your application is executing in a designer you can either use the GetIsInDesignMode method of DesignerProperties,
or the Dependency Property metadata directly like so:

bool designTime = (bool)DesignerProperties.IsInDesignModeProperty.GetMetadata(

dim designTime as Boolean = CBool(DesignerProperties.IsInDesignModeProperty.GetMetadata( _ 

This can be then rolled into a static class like so:
public static class DesignTimeEnvironment
    static bool? designTime;
    public static bool DesignTime
            if (!designTime.HasValue)
                designTime = (bool)DesignerProperties.IsInDesignModeProperty.GetMetadata(
            return designTime.Value;

Public Class DesignTimeEnvironment
    Public Shared ReadOnly Property DesignTime As Boolean
            If Not DesignTimeEnvironment.designTime.HasValue Then
                DesignTimeEnvironment.designTime = New Boolean?(CBool( _ 
                   DesignerProperties.IsInDesignModeProperty.GetMetadata( _ 
            End If
            Return DesignTimeEnvironment.designTime.Value
        End Get
    End Property
    Private Shared designTime As Boolean?
End Class


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Daniel Vaughan
President Outcoder
Switzerland Switzerland
Daniel Vaughan is a eight-time Microsoft MVP and co-founder of Outcoder, a Swiss software and consulting company dedicated to creating best-of-breed user experiences and leading-edge back-end solutions, using the Microsoft stack of technologies--in particular Xamarin, WPF, and the UWP.

Daniel is the author of Windows Phone 8 Unleashed and Windows Phone 7.5 Unleashed, both published by SAMS.

Daniel is the developer behind several acclaimed mobile apps including Surfy Browser for Android and Windows Phone. Daniel is the creator of a number of popular open-source projects, most notably Codon.

Would you like Daniel to bring value to your organisation? Please contact

Blog | MVP profile | Twitter

Xamarin Experts
Windows 10 Experts

You may also be interested in...

Comments and Discussions

GeneralReason for my vote of 1 offff Pin
seckinkiran26-Jan-12 3:32
memberseckinkiran26-Jan-12 3:32 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.180515.1 | Last Updated 27 Feb 2010
Article Copyright 2010 by Daniel Vaughan
Everything else Copyright © CodeProject, 1999-2018
Layout: fixed | fluid