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Brian
45
Designer Error in Existing Project
posted

I have an UltraGrid and an UltraDataSource in a user control.  I have a test app in a VS2010 solution that hosts this control without issue.  When I host the control in an  existing project (that also happens to be a user control) I get an error in the designer.

My existing control was a VS2008 project, so I converted to a VS2010 project and that had no impact.  The existing control is VB.Net and the user control hold the Infragistics components is C#.  Anyone have any thoughts on what could be throwing the designer off?  

object not set to an instance of an object

at System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)
at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkPropertyDescriptor.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) 

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  • 45
    posted

    Further testing shows it must have something to do with embedding the control withing a control.  In a test app that works when putting the user control on as form, it does not work if you put it on another user control.

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