save bulk value in sql database

string connectionString = GetConnectionString();
// Open a sourceConnection to the AdventureWorks database.
using (SqlConnection sourceConnection =
new SqlConnection(connectionString))
{
sourceConnection.Open();

// Perform an initial count on the destination table.
SqlCommand commandRowCount = new SqlCommand(
"SELECT COUNT(*) FROM " +
"dbo.BulkCopyDemoMatchingColumns;",
sourceConnection);
long countStart = System.Convert.ToInt32(
commandRowCount.ExecuteScalar());
Console.WriteLine("Starting row count = {0}", countStart);

// Get data from the source table as a SqlDataReader.
SqlCommand commandSourceData = new SqlCommand(
"SELECT ProductID, Name, " +
"ProductNumber " +
"FROM Production.Product;", sourceConnection);
SqlDataReader reader =
commandSourceData.ExecuteReader();

// Open the destination connection. In the real world you would
// not use SqlBulkCopy to move data from one table to the other
// in the same database. This is for demonstration purposes only.
using (SqlConnection destinationConnection =
new SqlConnection(connectionString))
{
destinationConnection.Open();

// Set up the bulk copy object.
// Note that the column positions in the source
// data reader match the column positions in
// the destination table so there is no need to
// map columns.
using (SqlBulkCopy bulkCopy =
new SqlBulkCopy(destinationConnection))
{
bulkCopy.DestinationTableName =
"dbo.BulkCopyDemoMatchingColumns";

try
{
// Write from the source to the destination.
bulkCopy.WriteToServer(reader);