MS Access update record

Question

I'm trying to update the records in an Access database where the column "Group" matches the argument.

The method I'm using at the moment is the following:

public void RenameGroup(string oldName, string newName)
{
    OpenConnection();
    command.Connection = con;
    command.CommandText = "Update [Data] SET [Group] = ? WHERE [Group] = ?";
    command.Parameters.Add("@oldName", OleDbType.Char).Value = oldName;
    command.Parameters.Add("@newName", OleDbType.Char).Value = newName;
    command.ExecuteNonQuery();
    CloseConnection();
}

The issue in this case I'm assuming it's that I'm trying to update the same column I'm iterating over and I need to use a Select query first, just not sure what would be the right way of doing it.

Thanks in advance.

Answer 1

You aren't providing the parameters in the query.

Try:

command.CommandText = "Update [Data] SET [Group] = @newName WHERE [Group] = @oldName";