C# SQL insert command

Question

Can anyone tell me the following 2 ways of inserting record creates better performance?

Case 1

SqlCommand cmd = new SqlCommand();

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Answer 1

I don't think the second one will work.

There is however a syntax in SQL Server 2008 for inserting multiple rows in a single INSERT statement and I think that will be faster than both the options you proposed:

INSERT INTO test (id, name)
VALUES
('1', 'foo'),
('2', 'bar'),
('3', 'baz')
 -- etc...

However if you really want high performance, consider using the SqlBulkCopy class.