asp.net - 创建新项目或更新现有项目

Question

我的代码似乎有些不对劲。感觉很麻烦，不太合乎逻辑。

有人可以让我摆脱痛苦，让我知道我写的这个有点好吗？

这很简单，当页面加载时，它会检查用户是否正在尝试更新现有书籍或创建新书籍。

这是代码：

Public Property modID As Int32

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Dim bookID = Request.QueryString("bookID")
    If Not String.IsNullOrWhiteSpace(bookID) Then
        newBook = False
    Else
        newBook = True
        Create()   'create a new book
        bookID = modID.ToString
    End If

    If Not newBook Then
        commitData()   'saves data on form
    End If

    If Not IsPostBack And Not newBook Then
        Page.DataBind()
        populateControls()    'populate my dropdown lists and radio/checkbox controls
        populateDatasets()    'load datasets to be used later
    End If

End Sub

Public Sub Create()
    'create a new book
    newBook = False
    Using dbcon As New SqlConnection(DBUtilities.ConnectionStringDefault)
        dbcon.Open()
        Dim cmd As New SqlCommand(CreateSQL, dbcon)
        cmd.Parameters.Add(New SqlParameter("@authorID", currentUser))
        modID = DirectCast(cmd.ExecuteScalar(), Int32)
    End Using
    navmod = NavbookFactory.Getbook(CInt(modID))
    populateNewBook()
End Sub

Answer 1

为什么不和额外的如果

If String.IsNullOrWhiteSpace(bookID) Then
        newBook = True
        Create()   'create a new book
        bookID = modID.ToString        
    Else
        newBook = False
        commitData()
    End If