How Can I Parameterize Column Names in a C# SqlCommand?

Parameterizing Column Names in SqlCommand

Parameterized queries are essential for preventing SQL injection attacks and ensuring the security of your database operations. However, C# SqlCommand poses a peculiar challenge when it comes to parameterizing column names. The syntax presented in the original question results in an error, as SqlCommand does not natively support parameterization of column names.

To address this, it is recommended to construct the query dynamically at runtime. This involves concatenating the column name with the rest of the query. While this may seem inconvenient, it is crucial to mitigate security risks:

// IMPORTANT: Ensure "slot" is validated against a whitelist to prevent injection attacks

SqlCommand command = new SqlCommand("SELECT [" + slot +
           "] FROM Users WHERE name=@name; ")
prikaz.Parameters.AddWithValue("name", name);

By dynamically constructing the query, you can effectively parameterize column names. Remember to prioritize security by whitelisting or validating all user inputs to avoid potential vulnerabilities.

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