Can't start Excel from C# due to a security exception

[CodeMan7777]

I have written some simple code to open Excel in C#, but for some reason a
SecurityException is thrown instead.

MSExcel.Application xl;

xl = new MSExcel.Application();

The code compiles fine, but never executes well at runtime giving only:

An unhandled exception of type 'System.Security.SecurityException' occurred
in TestApp02.exe

Additional information: Security error.

Does anyone have an idea as to what I am missing? I have written similar VB6
code using GetObject(), but I can't remember ever coming accross a similar
security issue.

 

[Cindy M -WordMVP-]

Hi =?Utf-8?B?Q29kZU1hbjc3Nzc=?=,

1. Is this running from a Console app, Win form app, something else? Debugging
(F5) or other?

2. if you put it in a try...catch block do you get any more information about
the exception?

3. Version of Excel you're trying to automate?

I have written some simple code to open Excel in C#, but for some reason a
SecurityException is thrown instead.

MSExcel.Application xl;

xl = new MSExcel.Application();

The code compiles fine, but never executes well at runtime giving only:

An unhandled exception of type 'System.Security.SecurityException' occurred
in TestApp02.exe

Additional information: Security error.

Does anyone have an idea as to what I am missing? I have written similar VB6
code using GetObject(), but I can't remember ever coming accross a similar
security issue.

Cindy Meister
INTER-Solutions, Switzerland
http://homepage.swissonline.ch/cindymeister (last update Jun 17 2005)
http://www.word.mvps.org

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