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jgreen
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Error: Cannot create an object of type ...
Aug 17th, 2010 at 4:40pm
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I have a project working great locally but when I upload it to a website I get the following error:

Parser Error:

Cannot create an object of type 'MindFusion.Drawing.Brush' from its string representation 's:#FFF5F5F5' for the 'BackBrush' property.

Project is copied into a folder off the root.
Bin folder and contents copied to root folder.
Web.config copied to root folder.

Here's the diagram code:

Code
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<ndiag:DiagramView ID="dgvMain" runat="server" Height="600px" Width="100%"
                    Behavior="LinkShapes" BorderColor="#999966" BorderStyle="Solid"
                    AllowInplaceEdit="true" BorderWidth="1px"
                    DelKeyAction="DeleteSelectedItems" EnableClipboard="True"
                    MaxImageSize="0, 0" NodeClickedScript="onNodeClicked" >
                <Diagram AllowSelfLoops="False" LinkBaseShapeSize="7" Bounds="0, 0, 255, 1920"
                    ShowGrid="True" AllowSplitLinks="True" AutoResize="None"
                    EnableStyledText="True" GridColor="LightSlateGray"
                    GridOffsetX="0" GridOffsetY="0" GridSizeX="3.175" GridSizeY="12.7"
                    LinkTextStyle="Rotate" RoundedLinks="True" BackBrush="s:#FFF5F5F5"
                    ShapeBrush="s:#FFFFFFFF"  />
        </ndiag:DiagramView>


Any idea what's going on?
  
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Stoyo
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Re: Error: Cannot create an object of type ...
Reply #1 - Aug 17th, 2010 at 5:21pm
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This is something that a type converter from mindfusion.common.dll should handle. Could you verify if that assembly has been copied to the server?
  
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jgreen
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Re: Error: Cannot create an object of type ...
Reply #2 - Aug 18th, 2010 at 1:35am
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yes.

The following have been copied to the bin folder:

MindFusion.Common.dll (ver: 1.2.3764.24450)
MindFusion.Diagramming.dll (ver: 5.3.5.27109)
MindFusion.Diagramming.WebForms.dll (ver: 3.1.1.27174)
MindFusion.Graphs.dll (ver: 1.1.0.16661)
MindFusion.Svg.dll (ver: 1.0.3818.19150)

JDiagram.jar file copied to the folder containing the diagram file (default.aspx)
  
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Stoyo
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Re: Error: Cannot create an object of type ...
Reply #3 - Aug 18th, 2010 at 5:31am
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So these are the .NET 3.5 NetDiagram assemblies, does your server run ASP.NET 3.5? Could you check if the page loads successfully if you remove the brush initializers from the aspx, and create brushes in the code-behind instead?
  
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jgreen
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Re: Error: Cannot create an object of type ...
Reply #4 - Aug 18th, 2010 at 3:19pm
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Ok. Getting closer.

Yes, the site is setup for .Net 3.5.

I removed the brush initializers from the aspx and added to the code-behind
Code
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        dgvMain.Diagram.BackBrush = New MindFusion.Drawing.SolidBrush(Color.WhiteSmoke)
        dgvMain.Diagram.ShapeBrush = New MindFusion.Drawing.SolidBrush(Color.White)

and got a little farther.

I'm now getting this error:
Security Exception

Exception Details
System.Security.SecurityException: Request failed.

Stack Trace:
Code
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[SecurityException: Request failed.]
   MindFusion.Diagramming.RectangleFConverter.ConvertTo(ITypeDescriptorContext context, CultureInfo culture, Object value, Type destinationType) +0
   System.ComponentModel.TypeConverter.ConvertTo(Object value, Type destinationType) +16
   System.Web.Compilation.CodeDomUtility.GenerateExpressionForValue(PropertyInfo propertyInfo, Object value, Type valueType) +432
   System.Web.UI.SimplePropertyEntry.GetCodeStatement(BaseTemplateCodeDomTreeGenerator generator, CodeExpression ctrlRefExpr) +125
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildBuildMethodInternal(ControlBuilder builder, Type ctrlType, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse, CodeStatementCollection statements, Boolean fStandardControl, Boolean fControlFieldDeclared, String deviceFilter, Boolean fControlSkin) +2407
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildBuildMethod(ControlBuilder builder, Boolean fTemplate, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse, Boolean fControlSkin) +536
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse) +1187
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse) +1051
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse) +552
   System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse) +552
   System.Web.Compilation.TemplateControlCodeDomTreeGenerator.BuildMiscClassMembers() +61
   System.Web.Compilation.PageCodeDomTreeGenerator.BuildMiscClassMembers() +12
   System.Web.Compilation.BaseCodeDomTreeGenerator.BuildSourceDataTree() +920
   System.Web.Compilation.BaseCodeDomTreeGenerator.GetCodeDomTree(CodeDomProvider codeDomProvider, StringResourceBuilder stringResourceBuilder, VirtualPath virtualPath) +45
   System.Web.Compilation.BaseTemplateBuildProvider.GenerateCode(AssemblyBuilder assemblyBuilder) +102
   System.Web.Compilation.AssemblyBuilder.AddBuildProvider(BuildProvider buildProvider) +99


I added write permissions to the all the folders but didn't help.

What am I missing?

thanks,

John
  
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Stoyo
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Re: Error: Cannot create an object of type ...
Reply #5 - Aug 18th, 2010 at 3:32pm
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Could you check at what security level does your application run? It seems the server refuses to load any of our custom type converters. In this case, move the Diagram.Bounds initialization from the aspx markup to the code-behind as work-around.

Stoyan
  
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jgreen
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Re: Error: Cannot create an object of type ...
Reply #6 - Aug 18th, 2010 at 5:47pm
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The site's hosted at GoDaddy so I'm not sure what security level is setup but I removed the bounds settings from the aspx and added that to the page load as well and everything is working great now. thanks for your help!!

here's what I did for anyone else that may be having the same problem:

Default.aspx
Code
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<ndiag:ShapeListBox ID="slbMain" runat="server" Style="background-color: white"
            Height="527px" Width="150px" JarLocation="JDiagram.jar">
</ndiag:ShapeListBox>

<ndiag:DiagramView ID="dgvMain" runat="server" Height="600px" Width="100%"
                    Behavior="LinkShapes" BorderColor="#999966" BorderStyle="Solid"
                    AllowInplaceEdit="true" BorderWidth="1px"
                    DelKeyAction="DeleteSelectedItems" EnableClipboard="True"
                    MaxImageSize="0, 0" NodeClickedScript="onNodeClicked" JarLocation="JDiagram.jar">
</ndiag:DiagramView>


Default.aspx.vb
Code
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Imports MindFusion.Diagramming
Imports System.Drawing

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Not IsPostBack Then
            dgvMain.Diagram.BackBrush = New MindFusion.Drawing.SolidBrush(Color.WhiteSmoke)
            dgvMain.Diagram.ShapeBrush = New MindFusion.Drawing.SolidBrush(Color.White)

            dgvMain.Diagram.AllowSelfLoops = False
            dgvMain.Diagram.LinkBaseShapeSize = 7
            dgvMain.Diagram.Bounds = New System.Drawing.RectangleF(0, 0, 255, 1920)
            dgvMain.Diagram.ShowGrid = True
            dgvMain.Diagram.AllowSplitLinks = True
            dgvMain.Diagram.AutoResize = AutoResize.None
            dgvMain.Diagram.EnableStyledText = True
            dgvMain.Diagram.GridColor = Color.LightSlateGray
            dgvMain.Diagram.GridOffsetX = 0
            dgvMain.Diagram.GridOffsetY = 0
            dgvMain.Diagram.GridSizeX = 3.175
            dgvMain.Diagram.GridSizeY = 12.7
            dgvMain.Diagram.LinkTextStyle = LinkTextStyle.Rotate
            dgvMain.Diagram.RoundedLinks = True
        End If

    End Sub
  
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