📄 productpagebyparamcache.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ OutputCache Duration="300" VaryByParam="PID" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<Script Runat="Server">
Sub Page_Load( s As Object, e As EventArgs )
  Dim strProductID As String
  Dim conNorthwind As SqlConnection
  Dim strSelect As String
  Dim cmdSelect As SqlCommand
  Dim dtrProducts As SqlDataReader

  strProductID = Request.Params( "PID" )
  If strProductID = Nothing Then
    strProductID = "1"
  End If
  conNorthwind = New SqlConnection( "Server=Localhost;UID=sa;PWD=secret;Database=Northwind" )
  strSelect = "Select * From Products Where ProductID=" & strProductID
  cmdSelect = New SqlCommand( strSelect, conNorthwind )
  conNorthwind.Open
    dgrdProducts.DataSource = cmdSelect.ExecuteReader()
    dgrdProducts.DataBind()
  conNorthwind.Close
End Sub
</Script>
<html>
<head><title>ProductPageByParamCache.aspx</title></head>
<body>

<asp:DataGrid
  ID="dgrdProducts"
  CellPadding="10"
  Runat="Server" />
<hr>
<small>Last Updated: <%=Now%></small>

</body>
</html>

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