How Can I Properly Handle UTF-8 Strings in Classic ASP When Interacting with a SQL Database?

Convert UTF-8 string to SQL database in Classic ASP

Handling Unicode strings can be a challenge in Classic ASP, especially when French characters are involved. To ensure that non-English characters are displayed correctly, it is critical to convert the string to the correct character set before storing it in the database.

Convert string before sending to database

To pre-convert the string, you need to perform the following steps in combination:

1. Make sure every page involved in this process (input forms, data retrieval, and display) is saved as UTF-8 encoded. Use an IDE that supports UTF-8 encoding or verify the file manually.
2. Add the following line as the first line on every page:

<code></code>

3. Include the following code at the top of each page:

Session.Codepage = 65001
Response.CodePage = 65001

This ensures that all dynamic strings will be processed as UTF-8.

Example

If you have three pages participating:

• Page 1 (Input Form): Add the directive and include the code shown above.
• Page 2 (Data Retrieval and Display): Add instructions and include code.
• Page 3 (Database Writing): Add the following line at the top of the page writing to the database:

CodePage = 65001

By following these steps, all strings will always be treated as UTF-8, eliminating the need for post-processing or string conversion functions when retrieving data from the database.

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