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Excel Services User-Defined Functions

This section contains information about user-defined functions (UDFs) and how to use UDF attributes in your code.

In This Section

Understanding Excel Services UDFs: Learn about managed-code UDFs, including required attributes, deployment, and security.

Walkthrough: Developing a Managed-Code UDF: Get step-by-step instructions on developing Excel Services UDFs using Microsoft Visual C#.

Frequently Asked Questions About Excel Services UDFs: Find answers to the most common questions about Excel Services UDFs.

How to: Enable UDFs: Learn how to enable UDFs and allow them to be called from an Excel workbook.

How to: Create a UDF that Calls a Web Service: Learn how to call an external Web service from a UDF.

How to: Access an External Data Source From a UDF: Get an example showing how to access an external database from a UDF.

How to: Deploy UDFs Using Windows SharePoint Services Solutions: Learn how to deploy a UDF by using the Windows SharePoint Services solution framework.

How to: Restrict UDF Code Access Security Permissions: Learn how to create a custom code group and restrict permission for a UDF assembly by using the .NET Framework 2.0 Configuration tool.

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