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6.2 upgrade causes Invalid Cast exception??


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I just upgraded to ChartFX/Windows Forms 6.2.

Now whenever the user attempts to open the interactive properties

dialog of a chart at runtime (by right-clicking on the chart, and

selecting "properties"), I get a "Specified cast is not valid" error.

My code hasn't changed. Also, if I revert back to the 6.0 dll's the

problem goes away.

I'd really like to move to the current version, but this is a

show-stopper.

Any suggestions as to what might be causing this error?

Thanks,

s.s.

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>Now whenever the user attempts to open the interactive properties

>dialog of a chart at runtime (by right-clicking on the chart, and

>selecting "properties"), I get a "Specified cast is not valid" error.

I'm on the current version (AFIK). All of the dll's have a file

version of 6.2.1754.xxxxx.

I created a new Windows Form project from scratch, dropped a chart

onto a form, and the problem still happens.

Additional information:

The problem only occurs Visual Studio .Net 2002 (I have both .NET 2002

and .NET 2003 installed on my Windows 2000 development machine).

Also, the problem only occurs when attempting to open the properties

dialog for the whole chart -- opening the properties dialog for a

single series works just fine.

Attached is a VS2002 solution that manifests the problem on my

machine.

Below is a stack trace:

at SoftwareFX.ChartFX.UI.0J.CA()

at SoftwareFX.ChartFX.UI.0J.OnVisibleChanged(EventArgs ev)

at System.Windows.Forms.Control.SetVisibleCore(Boolean value)

at System.Windows.Forms.Control.set_Visible(Boolean value)

at System.Windows.Forms.TabPage.set_Visible(Boolean value)

at System.Windows.Forms.TabControl.UpdateTabSelection(Boolean

uiselected)

at System.Windows.Forms.TabControl.OnHandleCreated(EventArgs e)

at System.Windows.Forms.Control.WmCreate(Message& m)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.TabControl.WndProc(Message& m)

at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32

msg, IntPtr wparam, IntPtr lparam)

On Mon, 15 Nov 2004 09:50:50 -0500, in chartfx.net.winforms you wrote:

>1) Have you downloaded the latest service pack for Chart FX 6.2 from our

>support site ?

>

>2) Please create an application from the scratch using 6.2 and test whether

>this problem happens.

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After more testing, I believe this problem is related to having both

versions of the .Net Framework installed. I asked two other

developers to test my sample application from a previous post. One

developer has never installed VS2003, the second developer has both

VS2002 and VS2003 installed (as do I). And you guessed, it the

problem only occurred for the second developer.

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Yep, definitely related to having both versions of the framework

installed.

Under VS2002, if I use the app.config file to target *only* the 1.0

framework, the problem goes away.

The easiest way to change the app.config file is to *first* use

VS2003. This is because VS2003 has a feature (under Project

Properties/Common Properties/Build) that allows you to specifiy what

version of the framework to target, and then auto-magically makes the

appropriate entries to the app.config file. Then, it's easy to copy

the entries into the app.config file under VS2002.

s.s.

On Mon, 15 Nov 2004 19:45:47 -0800, Steve

<NotDisclosed@cascadeaccess.com> wrote:

>After more testing, I believe this problem is related to having both

>versions of the .Net Framework installed. I asked two other

>developers to test my sample application from a previous post. One

>developer has never installed VS2003, the second developer has both

>VS2002 and VS2003 installed (as do I). And you guessed, it the

>problem only occurred for the second developer.

>

>

>

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Ok. Great info. We will research this to see whether it is something we are 

doing wrong or it is the way it is supposed to be (making it necessary to

use the config file).

As a side note: The feature in VS2003 that allows you to link against

different versions of the frameworks is not recommended by the Microsoft

crew, they recommend you install both versions of Visual Studio instead, so

I stay away from it.

--

FP

Software FX

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On Tue, 16 Nov 2004 10:12:25 -0500, "SoftwareFX Support"

<noreply@softwarefx.com> wrote:

>Ok. Great info. We will research this to see whether it is something we are

>doing wrong or it is the way it is supposed to be (making it necessary to

>use the config file).

>

>As a side note: The feature in VS2003 that allows you to link against

>different versions of the frameworks is not recommended by the Microsoft

>crew, they recommend you install both versions of Visual Studio instead, so

>I stay away from it.

Yes, that is what MS recommends, and that's what I'm doing. I have

both versions of Visual Studio installed, and I am compiling this app

using VS2002.

The problem is that under these circumstances the ChartFX components

generate the "invalid cast" exception *unless* I use the app.config

file to exclusively target the 1.0 Framework.

Thanks for you help,

s.s.

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I know that this is what you are doing and I was not blaming the problem on 

this. That's why I labeled my comment a "side note". I just though that it

was a piece of information that you might want to have. Evidently it wasn't

necessary as you already knew about it. Please disregard the whole "side

note".

--

FP

Software FX

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