Expression give errors when executing rdlc file

Question

User1185521526 posted

Hi, I'm using rdlc files for creating pdf files for download from ASP.Net 4.0 websites.
Now I'm having trouble with one Visual Studio 2010/ASP.Net 4.0 WebSite that seems to have problems while executing the report.
It always happens if I use an expression inside my report.

The Value expression for the textrun ‘Textbox4.Paragraphs[0].TextRuns[0]’ contains an error: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Code: rsRuntimeErrorInExpression
Severity: 0
ObjectType: TextRun
ObjectName: Textbox4.Paragraphs[0].TextRuns[0]

It happens while debugging with WinXP+VS2010 as well as on production environment with Win2k3 Server+IIS 6.
The formula of the expression is, e.g. =Parameters!par01.Value & "xxx"

I have many other websites on these both systems that don't get this problem, so it's not a general problem of the environment.
The one I mentioned is the only one where I get this problem.

Does anybody have an idea/solution?

Thanks in advance.
Alex

Answer 1

User2105670541 posted

why the expression is:

Parameters!par01.Value & "xxx"

I think it should be like:

=Parameters!par01.Value & "xxx"

Answer 2

User1185521526 posted

It's because I directly copied it from the xml-code.

In the editor it's displayed like you wrote.

Answer 3

User2105670541 posted

below thread mentioned the problem you are facing and given a solution to problem like yours, please have a look:

http://stackoverflow.com/questions/4794968/reporting-services-localreport-and-wif

Answer 4

User1185521526 posted

This worked for me.

I also don't understand why it is neccessary for that website, but I am happy to have a solution.

Thanks a lot!