public static bool UpdateCompanyPrice(Company company)
{
SqlConnection connection = StockMarketGameDB.GetConnection();
string updateStatement =
"UPDATE Companies SET " +
"curprice = @NewCurprice " +
"WHERE id = @companyID ";
SqlCommand updateCommand = new SqlCommand(updateStatement, connection);
updateCommand.Parameters.AddWithValue("@NewCurprice", company.Curprice);
updateCommand.Parameters.AddWithValue("@companyID", company.CompanyId);
try
{
connection.Open();
int count = updateCommand.ExecuteNonQuery();
if (count > 0)
{
return(true);
}
else
{
return(false);
}
}
catch (SqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
public static void InsertIntoHistory(Company company)
{
SqlConnection connection = StockMarketGameDB.GetConnection();
string insertStatement =
"INSERT StockHistory " +
"( updated, companyId, price) " +
"VALUES ( @updatedTime, @companyId, @curprice)";
SqlCommand insertCommand = new SqlCommand(insertStatement, connection);
insertCommand.Parameters.AddWithValue("@updatedTime", DateTime.Now);
insertCommand.Parameters.AddWithValue("@companyId", company.CompanyId);
insertCommand.Parameters.AddWithValue("@curprice", company.Curprice);
try
{
connection.Open();
insertCommand.ExecuteNonQuery();
}
catch (SqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
public static List <Company> GetInvoicesDue()
{
List <Company> companyList = new List <Company>();
SqlConnection connection = StockMarketGameDB.GetConnection();
string selectStatement =
"SELECT Companies.Id AS companyID, Companies.Name AS name, Companies.curprice AS curPrice, " +
" Companies.categoryId AS CategoryID, Companies.Volatility AS CompanyVol, " +
" Categories.Volatility AS CategoryVol" +
" FROM Companies INNER JOIN Categories ON Companies.categoryId = Categories.Id";
SqlCommand selectCommand = new SqlCommand(selectStatement, connection);
try
{
connection.Open();
SqlDataReader reader = selectCommand.ExecuteReader();
while (reader.Read())
{
Company company = new Company();
company.CompanyId = reader["companyID"].ToString();
company.CompanyName = reader["name"].ToString();
company.Curprice = reader["curPrice"].ToString();
company.CategoryId = reader["CategoryID"].ToString();
company.CompanyVolatility = reader["CompanyVol"].ToString();
company.CategoryVolatility = reader["CategoryVol"].ToString();
companyList.Add(company);
}
reader.Close();
}
catch (SqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
return(companyList);
}
