public static bool addItem(DrewsGoodsBO values = null)
{
//Connect with SQL
SqlConnection connection = openConnection();
string sql = "false";
//SQL query
if (values.type == "add")
{
sql = "INSERT INTO " + tableName + "(name, stock, price) VALUES('" + values.name + "', '" + values.stock + "', " + values.price + ");";
}
else if (values.type == "edit")
{
sql = "UPDATE " + tableName + " SET name = '" + values.name + "', stock = " + values.stock + ", price = " + values.price + " WHERE name = '" + values.name + "';";
}
if (sql != "false")
{
SqlCommand command = new SqlCommand(sql, connection);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
//Return true to signify succesful insertion ( ͡° ͜ʖ ͡°)
return(true);
}
else
{
System.Windows.Forms.MessageBox.Show("Something went wrong while adding the item.\n\nPlease try again.");
return(false);
}
}
public static DataSet getItems(DrewsGoodsBO values = null)
{
//Connect with SQL
SqlConnection connection = openConnection();
//SQL query
string sql = "SELECT name, stock, CAST(price AS DECIMAL(10,2)) FROM " + tableName + ";";
SqlCommand command = new SqlCommand(sql, connection);
//Open sql connection
connection.Open();
//Execute the reader
SqlDataReader reader = command.ExecuteReader();
if (reader.HasRows)
{
DataSet items = createLocalDataset();
while (reader.Read())
{
//Add row to local dataset
items.Tables[tableName].Rows.Add(reader[0], reader[2], reader[1]);
}
reader.Close();
//Return the dataset
return(items);
}
else
{
return(null);
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
DialogResult dialogResult = MessageBox.Show("Delete item", "Are you sure you want to delete this item?", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
try
{
string item = lvItems.SelectedItems[0].Text;
DrewsGoodsBO BO = new DrewsGoodsBO(item, null, 0);
if (DrewsGoodsBLL.deleteItem(BO) == true)
{
refresh();
}
else
{
MessageBox.Show("Something went wrong. \n\nPlease try again.");
}
}
catch
{
MessageBox.Show("No item selected. \n \n Select an item in the list!");
return;
}
btnEdit.Enabled = false;
btnEdit.Visible = false;
btnDelete.Enabled = false;
btnDelete.Visible = false;
}
else
{
return;
}
}
private void changeItem(string name, string price, int stock, string type)
{
if (!new Regex(@"^[A-Za-z0-9\s.,()]*$").IsMatch(name))
{
MessageBox.Show("Invalid characters used in name field. \n\n Only letters, numbers and the characters . , [ ] ( ) are allowed.");
return;
}
else if (!new Regex(@"^([0-9]{1,5}).([0-9]{2})$").IsMatch(price))
{
MessageBox.Show("Invalid price syntax.\n\nUse the format '50.00' (2 decimals, minimum '0.00' maximum '99999.99'");
return;
}
if (name == "" || price == "")
{
MessageBox.Show("Not all fields have been filled in.");
return;
}
else
{
DrewsGoodsBO BO = new DrewsGoodsBO(name, price, stock, type);
if (DrewsGoodsBLL.addItem(BO) == true)
{
MessageBox.Show("Item " + type + "ed succesfully!");
refresh();
}
}
}
public static bool deleteItem(DrewsGoodsBO values = null)
{
//Connect with SQL
SqlConnection connection = openConnection();
//SQL query
string sql = values != null ? "DELETE FROM " + tableName + " WHERE name = '" + values.name + "';" : "false";
if (sql != "false")
{
SqlCommand command = new SqlCommand(sql, connection);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
//Return true to signify succesful deletion
return(true);
}
else
{
System.Windows.Forms.MessageBox.Show("No item selected.");
return(false);
}
}
public static bool addItem(DrewsGoodsBO BO = null)
{
return(DrewsGoodsDAL.addItem(BO));
}
public static bool deleteItem(DrewsGoodsBO BO = null)
{
return(DrewsGoodsDAL.deleteItem(BO));
}
public static DataSet getItems(DrewsGoodsBO BO = null)
{
return(DrewsGoodsDAL.getItems(BO));
}
