Содержание

1 Displaying additional path information in ASP.NET
2 Displaying the Request.FilePath property in ASP.NET
3 Filtering the HTTP Request body using InputStream
- 3.1 Name:
4 Get browser information
5 Get Request.UserLanguages
6 Getting cookie values
7 Request.Cookies
8 Request.Headers
9 Request.QueryString
10 Search

Displaying additional path information in ASP.NET

   <source lang="csharp">

<%@ Page Language="vb" %> <html>

  <head>
     <title>Displaying additional path information in ASP.NET</title>
  </head>

<body>

<%

  Response.Write("File Path = " & Request.FilePath & "
")
  Response.Write("Path = " & Request.Path & "
")
  Response.Write("Additional Path Info = " & Request.PathInfo & "
")
  Response.Write("Physical Application Path = " & Request.PhysicalApplicationPath & "
")
  Response.Write("Physical Path = " & Request.PhysicalPath)

%>

</body> </html></source>

Displaying the Request.FilePath property in ASP.NET

   <source lang="csharp">

<%@ Page Language="vb" %> <html>

  <head>
     <title>Displaying the Request.FilePath property in ASP.NET</title>
  </head>

<body>

<%

  Dim fp As String
  fp = Request.FilePath
  Response.Write("The virtual path of the current request is: " & fp & "")

%>

</body> </html></source>

Filtering the HTTP Request body using InputStream

   <source lang="csharp">

<html>

  <head>
     <title>Submit a named parameter via POST</title>
  </head>

<body>

  <form id="form1" action="NextPage.aspx" method="POST">

Name:

     <input type="text" name="name">
     <input type="submit">
  </form>

</body> </html> File: NextPage.aspx <%@ Page Language="vb" %> <%@ import namespace = "System.IO" %> <html>

  <head>
     <title>Filtering the HTTP Request body using InputStream</title>
  </head>

<body>

<% Dim intvar As Integer intvar = Request.TotalBytes Response.Write("The size of the current request body is:
") Response.Write(intvar & " bytes.
") Dim InStream As Stream Dim iCounter, StreamLength, iRead As Integer Dim OutString As String Dim Found As Boolean InStream = Request.InputStream StreamLength = CInt(InStream.Length) Dim ByteArray(StreamLength) As Byte Trace.Write("StreamLength", StreamLength) iRead = InStream.Read(ByteArray, 0, StreamLength) For iCounter = 0 to StreamLength - 1

  If Found = True Then
     OutString = OutString & Chr(ByteArray(iCounter))
  End If
  If Chr(ByteArray(iCounter)) = "A" Then
     Trace.Write("Found", "Found an "A"")
     Found = True
     OutString = OutString & Chr(ByteArray(iCounter))
  End If
  Trace.Write("Loop Number", iCounter)
  Trace.Write("CurrentChar", Chr(ByteArray(iCounter)))

Next iCounter Response.Write("Output: " & OutString) %>

</body> </html></source>

Get browser information

   <source lang="csharp">

<%@ Page EnableViewstate="False" %> <script language="VB" runat="server"> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)

 Dim s As String
 s &= "ActiveXControls=" & Request.Browser.ActiveXControls & "
"
 s &= "AOL=" & Request.Browser.AOL & "
"
 s &= "BackgroundSounds=" & Request.Browser.BackgroundSounds & "
"
 s &= "Beta=" & Request.Browser.Beta & "
"
 s &= "Browser=" & Request.Browser.Browser & "
"
 s &= "CDF=" & Request.Browser.CDF & "
"
 s &= "ClrVersion=" & Request.Browser.ClrVersion.ToString & "
"
 s &= "Cookies=" & Request.Browser.Cookies & "
"
 s &= "Crawler=" & Request.Browser.Crawler & "
"
 s &= "EcmaScriptVersion=" & Request.Browser.EcmaScriptVersion.ToString & "
"
 s &= "Frames=" & Request.Browser.Frames & "
"
 s &= "JavaApplets=" & Request.Browser.JavaApplets & "
"
 s &= "JavaScript=" & Request.Browser.JavaScript & "
"
 s &= "MajorVersion=" & Request.Browser.MajorVersion & "
"
 s &= "MinorVersion=" & Request.Browser.MinorVersion & "
"
 s &= "MSDomVersion=" & Request.Browser.MSDomVersion.ToString & "
"
 s &= "Platform=" & Request.Browser.Platform & "
"
 s &= "Tables=" & Request.Browser.Tables & "
"
 s &= "Type=" & Request.Browser.Type & "
"
 s &= "VBScript=" & Request.Browser.VBScript & "
"
 s &= "Version=" & Request.Browser.Version & "
"
 s &= "W3CDomVersion=" & Request.Browser.W3CDomVersion.ToString & "
"
 s &= "Win16=" & Request.Browser.Win16 & "
"
 s &= "Win32=" & Request.Browser.Win32 & "
"
 
 Label.Text = s

End Sub </script> <html>

 <body>
   <form runat="server">
     Browser Capabilties:

     <asp:Label Runat="server" ID="Label" />
   </form>
 </body>

</html></source>

Get Request.UserLanguages

   <source lang="csharp">

<%@ Page Language="VB" %> <%@ Import Namespace="System.Globalization" %> <script runat="server">

  sub Page_Load(Sender as Object, e as EventArgs)
     dim strLanguage as string = Request.UserLanguages(0).ToString
     
     lblMessage.Text = "Primary language: " & strLanguage & "
"
     
     dim objCulture as new CultureInfo(strLanguage)
     lblMessage.Text += "Full name: " & objCulture.EnglishName & "
"
     lblMessage.Text += "Native name: " & objCulture.NativeName & "
"
     lblMessage.Text += "Abbreviation: " & objCulture.ThreeLetterISOLanguageName & "
"
     lblMessage.Text += "Current Time: " & DateTime.Now.ToString("D", objCulture) & "
"
     lblMessage.Text += "Parent: " & objCulture.Parent.EnglishName & "
"
     
  end sub

</script> <html><body>

  Your user information: 
  <asp:Label id="lblMessage" runat="server"/>

</body></html></source>

Getting cookie values

   <source lang="csharp">

<%@ Page Language="vb" Explicit="False" Strict="False" %> <html>

  <head>
     <title>Getting cookie values in ASP</title>
  </head>

<body>

<% For Each strKey In Request.Cookies

  Response.Write (strKey & " = " & Request.Cookies(strKey).Value & "
")
  If Request.Cookies(strKey).HasKeys Then
     For Each strSubKey In Request.Cookies(strKey).Values
        Response.Write ("->" & strKey & "(" & strSubKey & ") = " & _
           Request.Cookies(strKey)(strSubKey).ToString() & "
")
     Next
  End If

Next %>

</body> </html></source>

Request.Cookies

   <source lang="csharp">

   outbound.Value = (Int32.Parse(inbound.Value) + 1).ToString();
   theLabel.Text = inbound.Value;

} else {

   outbound.Value = "1";

} Response.Cookies.Add(outbound); } </script> <asp:label runat="server" id="theLabel" Text="no cookie value received" /></source>

Request.Headers

   <source lang="csharp">

<%@ Page Language="vb" %> <html>

  <head>
     <title>Displaying the HTTP headers collection in ASP.NET</title>
  </head>

<body>

<%

  Response.Write(Request.Headers)
  Request.SaveAs((Request.PhysicalApplicationPath & "HTTPRequest.txt"), True)
  Request.SaveAs((Request.PhysicalApplicationPath & "HTTPRequest_NoHeaders.txt"), False)

%>

</body> </html></source>

Request.QueryString

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Search" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>Search Page</title>

</head> <body>

   <form id="form1" runat="server">

Search

   You have successfully redirected to the search page.
   
   Your search string was <asp:Label ID="labSearch" runat="server" />

   </form>

</body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class Search : System.Web.UI.Page {

   protected void Page_Load(object sender, EventArgs e)
   {
      labSearch.Text = (string)Request.QueryString["search"];
   }

}</source>

Request.ServerVariables

   <source lang="csharp">

<%@ Page Language="vb" %> <html>

  <head>
     <title>Request property example</title>
     <script runat="server">
        Sub Page_Load()
           Message.Text = "The current request is from: " & _
              CStr(Request.ServerVariables.Item("REMOTE_ADDRESS"))
        End Sub
     </script>
  </head>

<body>

  <asp:label id="Message" runat="server"/>

</body> </html></source>

Request.UrlReferrer

   <source lang="csharp">

<%@ Page Language="C#"

        AutoEventWireup="true" 
        CodeFile="Default.aspx.cs" 
        Inherits="CrossPage1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"

 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

   <title>CrossPage1</title>

</head> <body>

   <form id="form1" runat="server" >

       Type something here:
       <asp:TextBox runat="server" ID="txt1"></asp:TextBox>
       <asp:RequiredFieldValidator ID="RequiredFieldValidator1" 
                                   runat="server" 
                                   ControlToValidate="txt1"
                                   EnableClientScript="False" 
                                   ErrorMessage="This is a required field.">
       </asp:RequiredFieldValidator>

       

       <asp:Button runat="server" 
                   ID="cmdPost" 
                   PostBackUrl="NextPage.aspx" 
                   Text="Cross-Page Postback" />
       <asp:Button runat="server" 
                   ID="cmdTransfer" 
                   Text="Manual Transfer" 
                   OnClick="cmdTransfer_Click" />

   </form>

</body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class CrossPage1 : System.Web.UI.Page {

   protected void Page_Load(object sender, EventArgs e)
   {
   if (Request.QueryString["err"] != null)
     Page.Validate();
   }
 public TextBox TextBox1
 {
   get { return txt1; }
 }
 protected void cmdTransfer_Click(object sender, EventArgs e)
 {
   Server.Transfer("NextPage.aspx", true);
 }

}

File: NextPage.aspx <%@ Page Language="C#"

        AutoEventWireup="true" 
        CodeFile="NextPage.aspx.cs" 
        Inherits="CrossPage2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"

         "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

   <title>Untitled Page</title>

</head> <body>

   <form id="form1" runat="server" >

   </form>

</body> </html>

File: NextPage.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class CrossPage2 : System.Web.UI.Page {

 protected void Page_Load(object sender, EventArgs e)
 {
   if (PreviousPage != null)
   {
     if (!PreviousPage.IsValid)
     {
       Response.Redirect(Request.UrlReferrer.AbsolutePath + "?err=true");
     }
     else
     {
       Response.Write("You came from a page titled " +
          PreviousPage.Header.Title + "<br /");
       CrossPage1 prevPage = PreviousPage as CrossPage1;
       if (prevPage != null)
       {
         Response.Write("You typed in this: " + prevPage.TextBox1.Text + "
");
       }
       if (PreviousPage.IsCrossPagePostBack)
       {
         Response.Write("The page was posted directly");
       }
       else
       {
         Response.Write("You used Server.Transfer()");
       }
     }
   }
 }

}</source>

Showing Parameters via the Params Collection in ASP.NET

   <source lang="csharp">

<html>

  <head>
     <title>Submit a named parameter via POST</title>
  </head>

<body>

  <form id="form1" action="NextPage.aspx" method="POST">

Name:

     <input type="text" name="name">
     <input type="submit">
  </form>

</body> </html> File: NextPage.aspx <%@ Page Language="vb" %> <html>

  <head>
     <title>Showing Parameters via the Params Collection in ASP.NET</title>
  </head>

<body>

<% Dim Counter1, Counter2 As Integer Dim Keys(), subKeys() As String Dim ParamColl As NameValueCollection

ParamColl=Request.Params Keys = ParamColl.AllKeys For Counter1 = 0 To Keys.GetUpperBound(0)

  Response.Write("Key: " & Keys(Counter1) & "
")
  subKeys = ParamColl.GetValues(Counter1) " Get all values under this key.
  For Counter2 = 0 To subKeys.GetUpperBound(0)
     Response.Write("Value " & CStr(Counter2) & ": " & subKeys(Counter2) & "
")
  Next Counter2

Next Counter1 %>

</body> </html></source>

Showing QueryString values via the QueryString Collection in ASP.NET

   <source lang="csharp">

<%@ Page Language="vb" %> <html>

  <head>
     <title>Showing QueryString values via the QueryString Collection in ASP.NET</title>
  </head>

<body>

<% Dim Counter1, Counter2 As Integer Dim Keys(), subKeys() As String Dim queryStringCollection As NameValueCollection

queryStringCollection=Request.QueryString Keys = queryStringCollection.AllKeys For Counter1 = 0 To Keys.GetUpperBound(0)

  Response.Write("Key: " & Keys(Counter1) & "
")
  subKeys = queryStringCollection.GetValues(Counter1)
  For Counter2 = 0 To subKeys.GetUpperBound(0)
     Response.Write("Value " & CStr(Counter2) & ": " & subKeys(Counter2) & "
")
  Next Counter2

Next Counter1 %> </body> </html></source>

ASP.NET Tutorial/Page Lifecycle/Request

Содержание

Displaying additional path information in ASP.NET

Displaying the Request.FilePath property in ASP.NET

Filtering the HTTP Request body using InputStream

Name:

Get browser information

Get Request.UserLanguages

Getting cookie values

Request.Cookies

Request.Headers

Request.QueryString

Search

Request.ServerVariables

Request.UrlReferrer

Showing Parameters via the Params Collection in ASP.NET

Name:

Showing QueryString values via the QueryString Collection in ASP.NET

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