Use of SqlBulkcopy for BulkCopy with ado.net

///code of copy all data of emp table in other table named emp1

on button click{
SqlConnection source_conn = new SqlConnection("Data Source=BSZ123\\SQLEXPRESS;Initial Catalog=Ecom_DB;Integrated Security=True");

SqlConnection destination_conn = new SqlConnection("Data Source=BSZ123\\SQLEXPRESS;Initial Catalog=Ecom_DB;Integrated Security=True");



SqlCommand cmd = new SqlCommand("SELECT * FROM emp", source_conn);
source_conn.Open();
destination_conn.Open();


SqlDataReader reader = cmd.ExecuteReader();
// Create SqlBulkCopy

SqlBulkCopy bulkData = new SqlBulkCopy(destination_conn);
// Set destination table name

bulkData.DestinationTableName = "";
// Write data

bulkData.WriteToServer(reader);
// Close objects

bulkData.Close();
destination_conn.Close();
source_conn.Close();
}