I'm sorry if I've missed it in the documentation, but I now need to use this control in one of our web pages and I have no idea how to put it there.  For some reason, the Visual Studio 2005 designer doesn't show the control in the toolbox, so I can't drag and drop it into the page.  What's the manual way to do it? 

I have the latest version of FlowChartX Pro.

Thanks!
Alvaro

Thanks Stoyan.  It works... almost.

Now my problem is accessing the control on the server so that I can populate it.  I've added the ID and RUNAT attributes but they're not working.  I keep getting this validation error when I try to debug:

Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Here's the line with the error:

<object classid="clsid:f025bf4e-4081-4c02-86e6-6602aee846f6" id="diagram" runat="server" style="width: 600px; height: 456px">

I'm not sure if this is a VS 2005 problem.  What do I need to do to access the control on the server?

Thanks,
Alvaro

Hi Stoyan,

I've been struggling to get this to work, and I'm almost there, I think. 

I started by creating the AxHost derived control on the server so I could use it to generate the diagram and then place the text inside a hidden field as you mentioned.  The code seemed to execute, but at the end I would get an AccessViolationException:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

   at System.Windows.Forms.UnsafeNativeMethods.IConnectionPoint.Unadvise(Int32 cookie)
   at System.Windows.Forms.AxHost.ConnectionPointCookie.Disconnect()
   at System.Windows.Forms.AxHost.OleInterfaces.StopEvents()
   at System.Windows.Forms.AxHost.OleInterfaces.Finalize()

So I decided to use the FlowChartClass instead of the control.  This time I got a different result.  It displayed the diagram the first time, but when I went back to the server to redisplay it, I would get an InvalidComObjectException at the point I would call ArrangeDiagram:

COM object that has been separated from its underlying RCW cannot be used.

   at FLOWCHARTLib.FlowChartClass.ArrangeDiagram(Object layout)
   at (my own code) ....

So I'm stuck.  I did some googling on that error and didn't come up with a solution.  Someone mentioned calling System.Runtime.InteropServices.Marshal.ReleaseComObject but that doesn't work.  I'm hoping you're familiar with this problem.

BTW, my boxes display images inside them.  Where should these images be located when running inside a web page?

Thanks!
Alvaro

Hi Stoyan,

I've made a lot of progress! 

I figured out why ArrangeDiagram was blowing up.  I was storing the layout object as a static member.  It would work fine on the initial request, but on subsequent requests the COM object had already been released behind the scenes. Doh!

I also got the images working.  I figured out that using the box.VariantTag attribute was making only the first box show its image -- the rest were blank.  It would also cause LoadFromString to throw an exception.  So I worked around having to use the VariantTag and the problems went away.

I also changed from spawning a separate STA thread to simply setting AspCompat=true on the page directive.  It just makes it easier.

The big issue now is making the boxes clickable.  On my Windows app, when a user double clicks on a box, the whole diagram is redrawn to make that box the centerpiece of the diagram.  This is done via the BoxDblClicked event, which makes it easy.  How is it done on the web?

Thanks!
Alvaro

Sweet, it's working like a charm. 

I sent a link of my page to one of my coworkers and it displays fine on his IE, except the control is not shown.  And he doesn't get prompted to install or download it, which is strange.  I checked his IE settings and everything looks alright.

I generated the lpk file and placed it in the same folder as the page.  Here's the HTML for it:

<object classid="clsid:5220cb21-c88d-11cf-b347-00aa00a28331">
<param name="LPKPath" value="FlowChartX.lpk" />
</object>
<object classid="clsid:f025bf4e-4081-4c02-86e6-6602aee846f6" id="diagram" name="diagram" width="100%" height="600">
</object>

Any clues?

Thanks,
Alvaro

Hi Stoyan,

Please send me your CAB file, as I currently don't have time to create one for us.  Send it to the email address associated with my login.

Thanks!
Alvaro

Yes, thank you.  It was delivered into my "Junk E-mail" folder, for some reason.

Alvaro