private void WriteProductsToFile()
{
string contents = JsonSerializer.Serialize(_products);
File.WriteAllText(filename, contents);
CatalogueChanged?.Invoke(this, new ChangeHandlerArgs());
}
public bool RemoveProduct(string name)
{
if (_products.Remove(_products.Find(product => product.Name.Equals(name))))
{
CatalogueChanged?.Invoke(this, new ChangeHandlerArgs());
return(true);
}
return(false);
}
private void ReadCatalogue(object sender, EventArgs e)
{
// Чтение каталога.
CatalogueChanged?.Invoke(sender, EventArgs.Empty);
// Вывод списка файлов каталога на форму.
filesListBox.Items.Clear();
foreach (string file in FilesList)
{
filesListBox.Items.Add(file);
}
}
public bool UpdateProductPrice(string name, double newprice)
{
foreach (Product product in _products)
{
if (product.Name.Equals(name))
{
product.Price = newprice;
CatalogueChanged?.Invoke(this, new ChangeHandlerArgs());
return(true);
}
}
return(false);
}
public bool RenameProduct(string oldName, string newName)
{
foreach (Product product in _products)
{
if (product.Name.Equals(oldName))
{
product.Name = newName;
CatalogueChanged?.Invoke(this, new ChangeHandlerArgs());
return(true);
}
}
return(false);
}
/// <summary>
/// Invokes CatalogueChanged and writes updates to json file.
/// </summary>
private void OnCatalogueChanged()
{
CatalogueChanged?.Invoke(this, new EventArgs());
WriteToFile();
}
public void AddProduct(Product p)
{
_products.Add(p);
CatalogueChanged?.Invoke(this, new ChangeHandlerArgs());
}
