我做了个电子商务程序，点击标题进入详细介绍，为什么我的程序第一次获得了该产品的详细介绍后，以后每回查看其他商品时候依然是地一次查

[nicholas_yy]

Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
Dim strProductID As String = Request.QueryString("productname")
Dim objCatalog As New StoreCommon.Services.Categories()
Dim dsProducts As StoreCommon.dsProduct = _
New StoreCommon.dsProduct()
dsProducts = objCatalog.GetProduct(strProductID)
dlstProducts.DataSource = dsProducts
dlstProducts.DataBind()
If dsProducts.Products.Count > 0 Then
lblSectionTitle.Text = dsProducts.Products(0).ProductName
End If

End Sub

[xiaopai20]

判断一下Pape.IsPostBack

[aquariusBoy]

每次页面载入都要执行这段代码，当然结果都一样了。加一个Pape.IsPostBack吧

[supermarrio]

修改后的源代码：
Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
if not Page.IsPostBack then
Dim strProductID As String = Request.QueryString("productname")
Dim objCatalog As New StoreCommon.Services.Categories()
Dim dsProducts As StoreCommon.dsProduct = _
New StoreCommon.dsProduct()
dsProducts = objCatalog.GetProduct(strProductID)
dlstProducts.DataSource = dsProducts
dlstProducts.DataBind()
If dsProducts.Products.Count > 0 Then
lblSectionTitle.Text = dsProducts.Products(0).ProductName
End If
endif
End Sub

增加if Not Page.IsPostBack then ... end if语句

[charles_y]

Page_Load 中加上
Context.Response.Cache.SetCacheability(HttpCacheability.NoCache);

[nicholas_yy]

Context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
是个什么东西 我页面加上它就好了

[xielongfei]

up