How Can I Effectively Convert UTF-8 Strings Before Sending Them to a SQL Database?

Convert UTF-8 String Effectively Before Sending to SQL Database

Encoding Considerations for UTF-8 Conversion

Ensuring accurate conversion of French characters from UTF-8 to SQL database requires a holistic approach involving multiple steps.

Pre-Database Conversion Methods

1. ADODB.Stream Conversion:

The provided function can be used to convert a string from UTF-8 to the appropriate charset:

Function ConvertFromUTF8(sIn)
    Dim oIn: Set oIn = CreateObject("ADODB.Stream")
    oIn.Open
    oIn.CharSet = "WIndows-1252"
    oIn.WriteText sIn
    oIn.Position = 0
    oIn.CharSet = "UTF-8"
    ConvertFromUTF8 = oIn.ReadText
    oIn.Close
End Function

2. Page-Level Encoding:

Adding as the first line of each page instructs ASP to process all dynamic strings as UTF-8.

3. Response Properties:

設定 Response.CodePage = 65001 和 Response.CharSet = "UTF-8" 可確保HTTP響應標頭中使用的字符集為UTF-8。

Important Considerations

• All pages in the application must adhere to these steps for consistency.
• Pages and included files must be saved using UTF-8 encoding.
• Confirm that your IDE is not defaulting to Windows-1252 (aka "ANSI") for file encoding.

Step-by-Step Implementation

1. Implement page-level encoding using an include file.
2. Set Response properties in all pages.
3. Ensure page and include file encoding is UTF-8.
4. If writing to the database on a third page, include the CodePage = 65001 setting on that page as well.

By following these steps, you can effectively convert UTF-8 strings before sending them to the SQL database, ensuring proper character display.

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