Property Sheet Error? - Commercial Forums :: How do I... - Gizmox | the enterprise > HTML5 platform for native-quality user interfaces

.net html5 web/cloud/mobile app delivery

| Downloads | Solutions | Store | Contact us

Search Forum Home

Forum Commercial Foru... Commercial Foru... Property Sheet Error?

12/15/2010 12:09 PM

	jharmon@blinfo.com
853 posts

Property Sheet Error?

I have a custom control where I have added some new properties to a textbox. However, if I try to set the properties using the property sheet in Visual Studio I get an error that says: Property Value is not valid. Details: Object reference not set to an instance of an object.

If I go and change the property manually then I am not able to open the designer and get the following error:

at System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializePropertyAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement, CodePropertyReferenceExpression propertyReferenceEx, Boolean reportError)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)

Can someone enlighten me as to why I would get this error?

Thanks, Joe

12/15/2010 3:17 PM

	palli
14304 posts

Re: Property Sheet Error?

Hi Joe,

Can you post more details on how exactly you declare your properties, maybe an example of such a property declaration that you have added to a control ?

Testing here, then simple property declaration on a custom control do not give me any such errors:

    Private _CustomText As String

    Public Property CustomText() As String

Get

            Return _CustomText

        End Get

        Set(ByVal value As String)

            _CustomText = value

        End Set

    End Property

    Private _CustomInt As Integer

    Public Property CustomInt() As Integer

Get

            Return _CustomInt

        End Get

        Set(ByVal value As Integer)

            _CustomInt = value

        End Set

    End Property

Palli

Páll Björnsson - Visual WebGui support team - Email: support@visualwebgui.com

12/16/2010 2:16 PM

	jharmon@blinfo.com
853 posts

Re: Property Sheet Error?

I found out the problem. I was trying to set the validatorType within my property set routines and I had to wrap it with a if (!DesignMode). Thanks anyways...

Thanks, Joe