Error Creating Control Custom Control
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Error Creating Control Failed To Create Designer
Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error Creating Control - Custom Control up vote 3 down http://www.telerik.com/forums/error-creating-control-solution-found vote favorite 2 I have a custom control and it works fine...except that the control cannot be rendered on Design Time. ( I am using VS 2008) I am thinking many people who develop custom controls encounter this problem...The error I get is "Error Creating Control - CustomControlName" Object reference not set to an instance of an object. I want a work around. or at least debug this...(Since this http://stackoverflow.com/questions/379355/error-creating-control-custom-control is a design time issue how to debug?) I have tried if( !DesignMode) code on OnInit, OnPreRender, RenderContents, CreateChildControls Methods ( I am just shooting in the dark)... Help pls. I really hope this is not a VS bug! c# composite-controls share|improve this question asked Dec 18 '08 at 21:29 Sankar 1 Do you have a parameterless constructor for your custom control? –BFree Dec 18 '08 at 21:33 add a comment| 4 Answers 4 active oldest votes up vote 1 down vote BFree's comment is the most likely issue, for a control to display in the design view it needs a parameterless constructor as the design viewer doesn't know how you would normally instantiate the control. If you do have a parameterless constructor, can you paste some code in to show what's happening? share|improve this answer answered Dec 19 '08 at 5:48 Glenn Slaven 19.7k2287149 add a comment| up vote 0 down vote As Glenn mentioned the first issue could be no parameterless constructor. The second could be you are calling methods during the OnLoad or other methods you mentioned that have parameters that are not initialized or some sort of attempt at database calls etc that is normally done at run-tim
ASP.NET Community Standup Forums Help Home/ASP.NET Forums/Advanced ASP.NET/Custom Server Controls/'Error Creating Control' ... 'true' could not be set on property 'Sho... 'Error http://forums.asp.net/t/1131118.aspx?+Error+Creating+Control+true+could+not+be+set+on+property+ShowRadioButtons+ Creating Control' ... 'true' could not be set on property 'ShowRadioButtons' [Answered]RSS 3 replies Last post Jul 10, 2007 05:09 AM by sujitm ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply Bow99 None 0 Points 85 Posts 'Error Creating Control' ... 'true' error creating could not be set on property 'ShowRadioButtons' Jul 09, 2007 04:54 AM|Bow99|LINK I have created a custom control which inherits from a compositeControl. Its all works well in the browser but when I show it in the design mode I geta gray box with the following message Error Creating Control - GroupPicker1 'true' could not be set error creating control on property 'ShowRadioButtons'. The Property is a fairly standard get and set Public Property ShowRadioButtons() As Boolean Get Return rowRadioButtons.Visible End Get Set(ByVal value As Boolean) EnsureChildControls() rowRadioButtons.Visible = value End Set End Property Any help much appreciated Reply sujitm Contributor 2133 Points 518 Posts Re: 'Error Creating Control' ... 'true' could not be set on property 'ShowRadioButtons' Jul 10, 2007 03:32 AM|sujitm|LINK Hi, Try using BrowsableAttribute on the property like: