如何利用VBA编写进销存管理系统的源码？

Imports System.Data.SqlClient
Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        'TODO: 这行代码将数据加载到表“Database1DataSet.Products”中，您可以根据需要移动或删除它。
        Me.ProductsTableAdapter.Fill(Me.Database1DataSet.Products)
    End Sub
    Private Sub btnAdd_Click(sender As Object, e As EventArgs) Handles btnAdd.Click
        Dim productName As String = txtProductName.Text
        Dim quantity As Integer = CInt(txtQuantity.Text)
        Dim price As Decimal = CDec(txtPrice.Text)
        Dim connectionString As String = "Data Source=(LocalDB)MSSQLLocalDB;AttachDbFilename=|DataDirectory|Database1.mdf;Integrated Security=True"
        Dim query As String = "INSERT INTO Products (ProductName, Quantity, Price) VALUES (@ProductName, @Quantity, @Price)"
        Using connection As New SqlConnection(connectionString)
            Using command As New SqlCommand(query, connection)
                command.Parameters.AddWithValue("@ProductName", productName)
                command.Parameters.AddWithValue("@Quantity", quantity)
                command.Parameters.AddWithValue("@Price", price)
                Try
                    connection.Open()
                    command.ExecuteNonQuery()
                    MessageBox.Show("产品添加成功！")
                Catch ex As Exception
                    MessageBox.Show("添加产品时出错：" & ex.Message)
                End Try
            End Using
        End Using
        Me.ProductsTableAdapter.Fill(Me.Database1DataSet.Products)
    End Sub
    Private Sub btnUpdate_Click(sender As Object, e As EventArgs) Handles btnUpdate.Click
        Dim selectedProduct As DataGridViewSelectedRowCollection = DataGridView1.SelectedRows
        If selectedProduct.Count > 0 Then
            Dim productId As Integer = CInt(selectedProduct(0).Cells("ProductId").Value)
            Dim newQuantity As Integer = CInt(txtNewQuantity.Text)
            Dim newPrice As Decimal = CDec(txtNewPrice.Text)
            Dim connectionString As String = "Data Source=(LocalDB)MSSQLLocalDB;AttachDbFilename=|DataDirectory|Database1.mdf;Integrated Security=True"
            Dim query As String = "UPDATE Products SET Quantity = @NewQuantity, Price = @NewPrice WHERE ProductId = @ProductId"
            Using connection As New SqlConnection(connectionString)
                Using command As New SqlCommand(query, connection)
                    command.Parameters.AddWithValue("@ProductId", productId)
                    command.Parameters.AddWithValue("@NewQuantity", newQuantity)
                    command.Parameters.AddWithValue("@NewPrice", newPrice)
                    Try
                        connection.Open()
                        command.ExecuteNonQuery()
                        MessageBox.Show("产品更新成功！")
                    Catch ex As Exception
                        MessageBox.Show("更新产品时出错：" & ex.Message)
                    End Try
                End Using
            End Using
            Me.ProductsTableAdapter.Fill(Me.Database1DataSet.Products)
        Else
            MessageBox.Show("请选择一个产品进行更新！")
        End If
    End Sub
    Private Sub btnDelete_Click(sender As Object, e As EventArgs) Handles btnDelete.Click
        Dim selectedProduct As DataGridViewSelectedRowCollection = DataGridView1.SelectedRows
        If selectedProduct.Count > 0 Then
            Dim productId As Integer = CInt(selectedProduct(0).Cells("ProductId").Value)
            Dim connectionString As String = "Data Source=(LocalDB)MSSQLLocalDB;AttachDbFilename=|DataDirectory|Database1.mdf;Integrated Security=True"
            Dim query As String = "DELETE FROM Products WHERE ProductId = @ProductId"
            Using connection As New SqlConnection(connectionString)
                Using command As New SqlCommand(query, connection)
                    command.Parameters.AddWithValue("@ProductId", productId)
                    Try
                        connection.Open()
                        command.ExecuteNonQuery()
                        MessageBox.Show("产品删除成功！")
                    Catch ex As Exception
                        MessageBox.Show("删除产品时出错：" & ex.Message)
                    End Try
                End Using
            End Using
            Me.ProductsTableAdapter.Fill(Me.Database1DataSet.Products)
        Else
            MessageBox.Show("请选择一个产品进行删除！")
        End If
    End Sub
End Class

这个源码使用了VB.NET和SQL Server数据库，实现了简单的进销存管理系统，主要功能包括添加、更新和删除产品信息，在窗体加载时，会从数据库中读取产品信息并显示在DataGridView中，用户可以通过点击按钮来执行相应的操作。

到此，以上就是小编对于“进销存vb源码”的问题就介绍到这了，希望介绍的几点解答对大家有用，有任何问题和不懂的，欢迎各位朋友在评论区讨论，给我留言。