How to get all crystal report in one pdf based on date

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ASP.NET

C#3.5

CrystalReports

Hi guys,

I have asp.net website, where i'm crystal reports
to download the report in pdf using c#.

i have a page where user will select department, from-date n to-date.
based on this the user will get data from this he can download specific one single report as pdf.

Now the client requirement is, he want to download all the report in one single click.
Once he select department, from-date n to-date.

all the related reports should get download that too in one pdf.

Can anyone please help me.


Thanks