vb,Public Class Product, Public Property Name As String, Public Property Quantity As Integer, Public Property Price As Decimal,End Class,
` ,,2. 在Form1窗体的代码文件中,定义一个全局变量来存储库存信息:,,
` vb,Private inventory As List(Of Product) = New List(Of Product)(),
` ,,3. 编写添加商品到库存的代码:,,
` vb,Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click, Dim product As New Product(), product.Name = TextBox1.Text, product.Quantity = CInt(TextBox2.Text), product.Price = CDec(TextBox3.Text), inventory.Add(product), UpdateDataGridView(),End Sub,
` ,,4. 编写从库存中删除商品的代码:,,
` vb,Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click, If DataGridView1.SelectedRows.Count > 0 Then, Dim index As Integer = DataGridView1.SelectedRows(0).Index, inventory.RemoveAt(index), UpdateDataGridView(), End If,End Sub,
` ,,5. 编写保存库存信息到文件的代码:,,
` vb,Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click, ' 这里可以使用序列化将inventory对象保存到文件,具体实现略。,End Sub,
` ,,6. 编写从文件加载库存信息的代码:,,
` vb,Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click, ' 这里可以使用反序列化从文件加载库存信息,具体实现略。,End Sub,
` ,,7. 编写更新DataGridView1显示库存信息的代码:,,
` vb,Private Sub UpdateDataGridView(), DataGridView1.DataSource = Nothing, DataGridView1.DataSource = inventory,End Sub,
“,,以上代码仅供参考,您可以根据实际需求进行修改和扩展。希望对您有所帮助!
Imports System.Collections.Generic Public Class Product Public Property Name As String Public Property Quantity As Integer Public Property Price As Double End Class Public Class Inventory Private products As New List(Of Product)() Public Sub AddProduct(product As Product) products.Add(product) End Sub Public Function GetProductByName(name As String) As Product Return products.Find(Function(p) p.Name = name) End Function Public Sub SellProduct(name As String, quantity As Integer) Dim product = GetProductByName(name) If product IsNot Nothing AndAlso product.Quantity >= quantity Then product.Quantity = quantity Else Console.WriteLine("库存不足或商品不存在") End If End Sub Public Function GetInventory() As List(Of Product) Return products End Function End Class Sub Main() Dim inventory As New Inventory() ' 添加商品 Dim product1 As New Product With {.Name = "商品1", .Quantity = 10, .Price = 50.0} Dim product2 As New Product With {.Name = "商品2", .Quantity = 20, .Price = 100.0} inventory.AddProduct(product1) inventory.AddProduct(product2) ' 销售商品 inventory.SellProduct("商品1", 3) ' 查看库存 Dim products = inventory.GetInventory() For Each product In products Console.WriteLine($"商品名称: {product.Name}, 库存数量: {product.Quantity}, 价格: {product.Price}") Next End Sub
这个示例中,我们定义了一个Product
类来表示商品,包含名称、数量和价格属性。Inventory
类用于管理商品的库存,包括添加商品、根据名称查找商品、销售商品和获取库存列表等功能,在Main
方法中,我们创建了一个Inventory
实例,添加了一些商品,然后进行了销售操作,并打印了库存信息。
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