Handling errors in UDFs

This section discusses the following topics:

• Displaying error messages directly in the function
• Returning function status information to the calling page
• Using try/catch or cftry/cfcatch blocks and the cfthrow and cfrethrow tags to handle and generate exceptions

The technique you use depends on the circumstances of your function and application and on your preferred programming style. However, most functions should use the second or third technique, or a combination of the two. The following sections discuss the uses, advantages, and disadvantages of each technique, and provides examples of their use.

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