Multiple Instances of Add-In Loading

[Paulem0071]

All,

I am using a CustomTaskPane (CTP) wth Outlook 2007 and VSTO. The CTP loads
as a sidebar on the right side of the screen.

My issue is that sometimes two of the CTPs load. Here is my ThisAddIn_Startup
code (note the attempts at prevention of duplcate CTPS)

Outlook.Explorer explorer = this.Application.ActiveExplorer();
if (this.CustomTaskPanes.Count > 0)
{
foreach (Microsoft.Office.Tools.CustomTaskPane ctp in
this.CustomTaskPanes)
{
//if already here, use it
if (ctp.Title == "MyTitle")
{
myCustomTaskPane = ctp;
}

}
}
else
{
//make a new one only if one does not exist
if (taskPane == null)
{
taskPane = new MyTaskPane();
myCustomTaskPane = this.CustomTaskPanes.Add(taskPane,
"MyTitle", explorer);
}

}

Thanks for any advice in advance!

 

[Ken Slovak - [MVP - Outlook]]

So you don't have multiple instances of your addin loading as your subject
says?

Why not check each task pane that might exist and compare the Window
property to the Explorer? Outlook 2007 allows direct comparisons of that
property.

 

[Paulem0071]

Ken,

You are correct, the add-in is not loading multiple times, the CTP is.

With regard to the Window property, I do not want to interfere wth any other
outside CTPs, so unless I am misunderstanding your suggeston, not sure that
would work.

Any other ideas?

Thank you.

 

[Ken Slovak - [MVP - Outlook]]

You can always compare the Window argument and once you have the correct
window just make sure it isn't your CTP that's there. Ignore any others that
don't have your tags.