SQLBulkCopy

public void ImportData()
{
    // Connection String to Excel Workbook
    string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\stagingserver\abc\UPLOAD\MyFile.xls;Extended Properties=""Excel 8.0;HDR=YES;IMEX=1""";
    OleDbConnection xlConn = new OleDbConnection(excelConnectionString);
    OleDbCommand xlCommand = new OleDbCommand("select col1, col2 from [Sheet1$]", xlConn);
    xlConn.Open();

    using(DbDataReader dr = xlCommand.ExecuteReader())
    {
        using(SqlBulkCopy copyData = new SqlBulkCopy(MYConnectionString))
        {
            copyData.DestinationTableName = "MY_TABLE";
            copyData.WriteToServer(dr);

            copyData.Close();
        }
        dr.Close();
        dr.Dispose();
    }
    xlCommand.Dispose();
    xlConn.Close();
    xlConn.Dispose();
}