Question

Im using c# windows form application. I have a database with many tables. Each table has several columns. I need to populate the combo box with the column names for a selected table.

Answer 1

The proper way of doing this on SQL Server 2005 and up (you didn’t specify quite clearly what version you’re using) would be to inspect the system catalog view, which live in the sys schema:

SELECT 
    name
FROM    
    sys.columns
WHERE
    object_id = object_id('YourTableNameHere')
ORDER BY
    name    

The sys.columns catalog view gives you quite a bit of information about the columns for a table – the table is identified by the object_id column, which is the internal ID for that table in question.