What is the best library for creating PDF reports in .NET?
I'm creating an ASP.NET application for which the reports will all be PDF files. The user will enter values for filtering and the application will generate a PDF which the user can download.

I need the flexibility to define custom styles and draw some grids and charts.

What library should I use?
What is the best library for creating PDF reports in .NET?
===

I'm creating an ASP.NET application for which the reports will all be PDF files. The user will enter values for filtering and the application will generate a PDF which the user can download.

I need the flexibility to define custom styles and draw some grids and charts.

What library should I use?