/// <summary>
/// This code adds the new customer information to MySQL, and stipulates which fields it will be populating.
/// </summary>
/// <param>@CUSTOMER_ID, @CUSTOMER_FIRST_NAME, @CUSTOMER_LAST_NAME, @CUSTOMER_STREET_NAME, @CUSTOMER_STREET_NUMBER, @CUSTOMER_CITY, @CUSTOMER_STATE, @CUSTOMER_PHONE, @CUSTOMER_REFERRED_BY</param>
/// <returns></returns>
public static int AddCustomer(Customer customer)
{
//This is the logic used to add a customer.
MySqlConnection connection = Wildcat.GetConnection();
int newCUSTOMER_ID = GetMaxCustomer_ID() + 1;
string strInsertStatement =
"INSERT INTO customer " +
"(CUSTOMER_ID, CUSTOMER_FIRST_NAME, CUSTOMER_LAST_NAME, CUSTOMER_STREET_NAME, CUSTOMER_STREET_NUMBER, CUSTOMER_CITY, CUSTOMER_STATE, CUSTOMER_PHONE, CUSTOMER_REFERRED_BY) " +
"VALUES (@CUSTOMER_ID, @CUSTOMER_FIRST_NAME, @CUSTOMER_LAST_NAME, @CUSTOMER_STREET_NAME, @CUSTOMER_STREET_NUMBER, @CUSTOMER_CITY, @CUSTOMER_STATE, @CUSTOMER_PHONE, @CUSTOMER_REFERRED_BY)";
MySqlCommand insertCommand =
new MySqlCommand(strInsertStatement, connection);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_ID", newCUSTOMER_ID);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_FIRST_NAME", customer.CUSTOMER_FIRST_NAME);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_LAST_NAME", customer.CUSTOMER_LAST_NAME);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_STREET_NAME", customer.CUSTOMER_STREET_NAME);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_STREET_NUMBER", customer.CUSTOMER_STREET_NUMBER);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_CITY", customer.CUSTOMER_CITY);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_STATE", customer.CUSTOMER_STATE);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_PHONE", customer.CUSTOMER_PHONE);
insertCommand.Parameters.AddWithValue(
"@CUSTOMER_REFERRED_BY", customer.CUSTOMER_REFERRED_BY);
//This try statement selects our information and converts to Int32.
try
{
connection.Open();
insertCommand.ExecuteNonQuery();
string strSelectStatement =
"SELECT MAX(CUSTOMER_ID) FROM customer";
MySqlCommand selectCommand =
new MySqlCommand(strSelectStatement, connection);
int CUSTOMER_ID = Convert.ToInt32(selectCommand.ExecuteScalar());
return(CUSTOMER_ID);
}
catch (MySqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
/// <summary>
/// This method pulls information from MySQL into Visual Studio.
/// </summary>
/// <param>@Customer_ID</param>
/// <returns></returns>
public static Customer GetCustomer(int customerID)
{
//This code stipulates which information gets pulled from MySQL and from where it is getting pulled.
MySqlConnection connection = Wildcat.GetConnection();
string strSelectStatement
= "SELECT CUSTOMER_ID, CUSTOMER_FIRST_NAME, CUSTOMER_LAST_NAME, CUSTOMER_STREET_NUMBER, CUSTOMER_STREET_NAME, CUSTOMER_CITY, CUSTOMER_STATE, CUSTOMER_PHONE, CUSTOMER_REFERRED_BY "
+ "FROM customer "
+ " WHERE CUSTOMER_ID = @CUSTOMER_ID";
MySqlCommand selectCommand =
new MySqlCommand(strSelectStatement, connection);
selectCommand.Parameters.AddWithValue("@CUSTOMER_ID", customerID);
try
{
//This opens the connection, and converts the information being pulled from MySQL into a string. This string then goes into a textbox we have set.
connection.Open();
MySqlDataReader custReader =
selectCommand.ExecuteReader(CommandBehavior.SingleRow);
if (custReader.Read())
{
Customer customer = new Customer();
customer.CUSTOMER_ID = (int)custReader["CUSTOMER_ID"];
customer.CUSTOMER_FIRST_NAME = custReader["CUSTOMER_FIRST_NAME"].ToString();
customer.CUSTOMER_LAST_NAME = custReader["CUSTOMER_LAST_NAME"].ToString();
customer.CUSTOMER_STREET_NUMBER = custReader["CUSTOMER_STREET_NUMBER"].ToString();
customer.CUSTOMER_STREET_NAME = custReader["CUSTOMER_STREET_NAME"].ToString();
customer.CUSTOMER_CITY = custReader["CUSTOMER_CITY"].ToString();
customer.CUSTOMER_STATE = custReader["CUSTOMER_STATE"].ToString();
customer.CUSTOMER_PHONE = custReader["CUSTOMER_PHONE"].ToString();
customer.CUSTOMER_REFERRED_BY = custReader["CUSTOMER_REFERRED_BY"].ToString();
return(customer);
}
//If it pulls no information, it returns null.
else
{
return(null);
}
}
catch (MySqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
/// <summary>
/// This method creates a customer ID for an added customer.
/// </summary>
/// <param></param>
/// <returns>New Customer ID</returns>
public static int createCustomerID(ref int CUSTOMER_ID)
{
//Increments the max customer ID by 1 and generate new ID for next customer.
MySqlConnection connection = Wildcat.GetConnection();
connection.Open();
string selectStatement =
"Select MAX(CUSTOMER_ID) FROM customer ";
MySqlCommand selectCommand =
new MySqlCommand(selectStatement, connection);
CUSTOMER_ID = Convert.ToInt32(selectCommand.ExecuteScalar());
CUSTOMER_ID++;
connection.Close();
return(CUSTOMER_ID);
}
/// <summary>
/// This method gets the max customer ID in the table.
/// </summary>
/// <returns>Max Customer ID</returns>
private static int GetMaxCustomer_ID()
{
//Identifies the max customer ID.
MySqlConnection connection = Wildcat.GetConnection();
string selectStatement = "Select Max(CUSTOMER_ID) From customer";
try
{
connection.Open();
MySqlCommand selectCommand = new MySqlCommand(selectStatement, connection);
int CUSTOMER_ID = Convert.ToInt32(selectCommand.ExecuteScalar());
return(CUSTOMER_ID);
}
catch (MySqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
/// <summary>
/// This boolean method updates our customer information. It includes code for both the new and old customer information.
/// </summary>
/// <param>@CUSTOMER_ID, @NewCUSTOMER_FIRST_NAME, @NewCUSTOMER_LAST_NAME, @NewCUSTOMER_STREET_NAME, @NewCUSTOMER_STREET_NUMBER, @NewCUSTOMER_CITY, @NewCUSTOMER_STATE, @NewCUSTOMER_PHONE, @NewCUSTOMER_REFERRED_BY</param>
/// <param>@OldCUSTOMER_ID, @OldCUSTOMER_FIRST_NAME, @OldCUSTOMER_LAST_NAME, @OldCUSTOMER_STREET_NAME, @OldCUSTOMER_STREET_NUMBER, @OldCUSTOMER_CITY, @OldCUSTOMER_STATE, @OldCUSTOMER_PHONE, @OldCUSTOMER_REFERRED_BY</param>
/// <returns></returns>
public static bool blnUpdateCustomer(Customer oldCustomer,
Customer newCustomer)
{
MySqlConnection connection = Wildcat.GetConnection();
//The following string is the updated customer information.
string strUpdateStatement =
"UPDATE customer SET " +
"CUSTOMER_FIRST_NAME = @NewCUSTOMER_FIRST_NAME, " +
"CUSTOMER_LAST_NAME = @NewCUSTOMER_LAST_NAME, " +
"CUSTOMER_STREET_NAME = @NewCUSTOMER_STREET_NAME, " +
"CUSTOMER_STREET_NUMBER = @NewCUSTOMER_STREET_NUMBER, " +
"CUSTOMER_CITY = @NewCUSTOMER_CITY, " +
"CUSTOMER_STATE = @NewCUSTOMER_STATE, " +
"CUSTOMER_PHONE = @NewCUSTOMER_PHONE " +
"WHERE CUSTOMER_ID = @OldCUSTOMER_ID" +
" AND CUSTOMER_ID = @NewCUSTOMER_ID" +
" AND CUSTOMER_FIRST_NAME = @OldCUSTOMER_FIRST_NAME " +
" AND CUSTOMER_LAST_NAME = @OldCUSTOMER_LAST_NAME" +
" AND CUSTOMER_STREET_NAME = @OldCUSTOMER_STREET_NAME " +
" AND CUSTOMER_STREET_NUMBER = @OldCUSTOMER_STREET_NUMBER" +
" AND CUSTOMER_CITY = @OldCUSTOMER_CITY " +
" AND CUSTOMER_STATE = @OldCUSTOMER_STATE " +
" AND CUSTOMER_PHONE = @OldCUSTOMER_PHONE";
MySqlCommand updateCommand =
new MySqlCommand(strUpdateStatement, connection);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_ID", newCustomer.CUSTOMER_ID);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_FIRST_NAME", newCustomer.CUSTOMER_FIRST_NAME);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_LAST_NAME", newCustomer.CUSTOMER_LAST_NAME);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_STREET_NAME", newCustomer.CUSTOMER_STREET_NAME);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_STREET_NUMBER", newCustomer.CUSTOMER_STREET_NUMBER);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_CITY", newCustomer.CUSTOMER_CITY);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_STATE", newCustomer.CUSTOMER_STATE);
updateCommand.Parameters.AddWithValue(
"@NewCUSTOMER_PHONE", newCustomer.CUSTOMER_PHONE);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_ID", oldCustomer.CUSTOMER_ID);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_FIRST_NAME", oldCustomer.CUSTOMER_FIRST_NAME);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_LAST_NAME", oldCustomer.CUSTOMER_LAST_NAME);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_STREET_NAME", oldCustomer.CUSTOMER_STREET_NAME);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_STREET_NUMBER", oldCustomer.CUSTOMER_STREET_NUMBER);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_CITY", oldCustomer.CUSTOMER_CITY);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_STATE", oldCustomer.CUSTOMER_STATE);
updateCommand.Parameters.AddWithValue(
"@OldCUSTOMER_PHONE", oldCustomer.CUSTOMER_PHONE);
//The try catch is making sure the modify/update statement is working correctly.
try
{
connection.Open();
int intCount = updateCommand.ExecuteNonQuery();
if (intCount > 0)
{
return(true);
}
else
{
return(false);
}
}
catch (MySqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
/// <summary>
/// This places the customer called upon into a list.
/// </summary>
/// <param>@CUSTOMER_FIRST_NAME, @CUSTOMER_LAST_NAME</param>
/// <returns></returns>
public static List <Customer> GetCustomerByName(string CUSTOMER_FIRST_NAME, string CUSTOMER_LAST_NAME)
{
//Using the SQL query to get the headers from the database that is customer.
MySqlConnection connection = Wildcat.GetConnection();
string selectStatement
= "Select CUSTOMER_ID, CUSTOMER_LAST_NAME, CUSTOMER_FIRST_NAME, CUSTOMER_STREET_NAME, CUSTOMER_STREET_NUMBER, CUSTOMER_CITY, CUSTOMER_STATE, CUSTOMER_PHONE"
+ "From customer"
+ "Where";
//If a null value is entered this will inform the user.
if (!(string.IsNullOrEmpty(CUSTOMER_FIRST_NAME)) && !(string.IsNullOrEmpty(CUSTOMER_LAST_NAME)))
{
selectStatement = selectStatement
+ "CUSTOMER_FIRST_NAME = @CUSTOMER_FIRST_NAME"
+ "AND CUSTOMER_LAST_NAME = @CUSTOMER_LAST_NAME";
}
else if (!string.IsNullOrEmpty(CUSTOMER_FIRST_NAME))
{
selectStatement = selectStatement
+ "CUSTOMER_FIRST_NAME = @CUSTOMER_FIRST_NAME";
}
else if (!string.IsNullOrEmpty(CUSTOMER_LAST_NAME))
{
selectStatement = selectStatement
+ "CUSTOMER_LAST_NAME = @CUSTOMER_LAST_NAME";
}
MySqlCommand selectCommand =
new MySqlCommand(selectStatement, connection);
selectCommand.Parameters.AddWithValue("@CUSTOMER_FIRST_NAME", CUSTOMER_FIRST_NAME);
selectCommand.Parameters.AddWithValue("@CUSTOMER_LAST_NAME", CUSTOMER_LAST_NAME);
try
{
//This opens the connection.
connection.Open();
MySqlDataReader custReader =
selectCommand.ExecuteReader();
List <Customer> customersList = new List <Customer>();
while (custReader.Read())
{
//This generates the customer list.
Customer customer = new Customer();
customer.CUSTOMER_ID = (int)custReader["CUSTOMER_ID"];
customer.CUSTOMER_FIRST_NAME = custReader["CUSTOMER_FIRST_NAME"].ToString();
customer.CUSTOMER_LAST_NAME = custReader["CUSTOMER_LAST_NAME"].ToString();
customer.CUSTOMER_STREET_NAME = custReader["CUSTOMER_STREET_NAME"].ToString();
customer.CUSTOMER_STREET_NUMBER = custReader["CUSTOMER_STREET_NUMBER"].ToString();
customer.CUSTOMER_CITY = custReader["CUSTOMER_CITY"].ToString();
customer.CUSTOMER_STATE = custReader["CUSTOMER_STATE"].ToString();
customer.CUSTOMER_PHONE = custReader["CUSTOMER_PHONE"].ToString();
customer.CUSTOMER_REFERRED_BY = custReader["CUSTOMER_REFERRED_BY"].ToString();
customersList.Add(customer);
}
if (customersList.Count() > 0)
{
return(customersList);
}
else
{
return(null);
}
}
catch (MySqlException ex)
{
throw ex;
}
finally
{
connection.Close();
}
}
