Question

I am using multi threading concept to run some process. this process uses the sql connection object to get the data from database.This object is in another class. how to synchronize the sql connection while using multithreading?

Answer 1

Just create a new connection in each place you need it. Connection pooling will automatically ensure it only creates as many physical connections as you need.

using(var conn = new SqlConnection("..."))
{
    var cmd = new SqlCommand("...", conn);
    ...
}