в 15:30, 26 мая 2010

2010-05-26T15:30:57Z

Admin: 1 версия

2010-05-26T12:00:01Z

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== 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 & "<br>")
Response.Write("Path = " & Request.Path & "<br>")
Response.Write("Additional Path Info = " & Request.PathInfo & "<br>")
Response.Write("Physical Application Path = " & Request.PhysicalApplicationPath & "<br>")
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: <strong>" & fp & "</strong>")
%>

</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">
<h3>Name:</h3>
<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: <br>")
Response.Write(intvar & " bytes.<br>")
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 & "<br>"
s &= "AOL=" & Request.Browser.AOL & "<br>"
s &= "BackgroundSounds=" & Request.Browser.BackgroundSounds & "<br>"
s &= "Beta=" & Request.Browser.Beta & "<br>"
s &= "Browser=" & Request.Browser.Browser & "<br>"
s &= "CDF=" & Request.Browser.CDF & "<br>"
s &= "ClrVersion=" & Request.Browser.ClrVersion.ToString & "<br>"
s &= "Cookies=" & Request.Browser.Cookies & "<br>"
s &= "Crawler=" & Request.Browser.Crawler & "<br>"
s &= "EcmaScriptVersion=" & Request.Browser.EcmaScriptVersion.ToString & "<br>"
s &= "Frames=" & Request.Browser.Frames & "<br>"
s &= "JavaApplets=" & Request.Browser.JavaApplets & "<br>"
s &= "JavaScript=" & Request.Browser.JavaScript & "<br>"
s &= "MajorVersion=" & Request.Browser.MajorVersion & "<br>"
s &= "MinorVersion=" & Request.Browser.MinorVersion & "<br>"
s &= "MSDomVersion=" & Request.Browser.MSDomVersion.ToString & "<br>"
s &= "Platform=" & Request.Browser.Platform & "<br>"
s &= "Tables=" & Request.Browser.Tables & "<br>"
s &= "Type=" & Request.Browser.Type & "<br>"
s &= "VBScript=" & Request.Browser.VBScript & "<br>"
s &= "Version=" & Request.Browser.Version & "<br>"
s &= "W3CDomVersion=" & Request.Browser.W3CDomVersion.ToString & "<br>"
s &= "Win16=" & Request.Browser.Win16 & "<br>"
s &= "Win32=" & Request.Browser.Win32 & "<br>"

Label.Text = s
End Sub
</script>
<html>
<body>
<form runat="server">
<b>Browser Capabilties:</b><br>
<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 & "<br>"

dim objCulture as new CultureInfo(strLanguage)
lblMessage.Text += "Full name: " & objCulture.EnglishName & "<br>"
lblMessage.Text += "Native name: " & objCulture.NativeName & "<br>"
lblMessage.Text += "Abbreviation: " & objCulture.ThreeLetterISOLanguageName & "<br>"
lblMessage.Text += "Current Time: " & DateTime.Now.ToString("D", objCulture) & "<br>"
lblMessage.Text += "Parent: " & objCulture.Parent.EnglishName & "<br>"

end sub
</script>
<html><body>
<b>Your user information:</b>
<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 & "<BR>")
If Request.Cookies(strKey).HasKeys Then
For Each strSubKey In Request.Cookies(strKey).Values
Response.Write ("->" & strKey & "(" & strSubKey & ") = " & _
Request.Cookies(strKey)(strSubKey).ToString() & "<BR>")
Next
End If
Next
%>

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

== Request.Cookies==



<source lang="csharp">
<script language="C#" runat="server" trace="true" >
protected void Page_Load(object o, EventArgs e) {
HttpCookie outbound = new HttpCookie("MyCookie");
HttpCookie inbound = Request.Cookies["MyCookie"];
if(inbound != null) {
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">
<div>
<h1>Search</h1>
You have successfully redirected to the search page.

Your search string was <em><asp:Label ID="labSearch" runat="server" /></em>
</div>
</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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CrossPage1</title>
</head>
<body>
<form id="form1" runat="server" >
<div>
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><br />
<br />
<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" />
</div>
</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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server" >
<div>

</div>
</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 + "<br />");
}
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">
<h3>Name:</h3>
<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) & "<br>")
subKeys = ParamColl.GetValues(Counter1) " Get all values under this key.
For Counter2 = 0 To subKeys.GetUpperBound(0)
Response.Write("Value " & CStr(Counter2) & ": " & subKeys(Counter2) & "<br>")
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) & "<br>")
subKeys = queryStringCollection.GetValues(Counter1)
For Counter2 = 0 To subKeys.GetUpperBound(0)
Response.Write("Value " & CStr(Counter2) & ": " & subKeys(Counter2) & "<br>")
Next Counter2
Next Counter1
%>
</body>
</html></source>

← Предыдущая	Версия 15:30, 26 мая 2010
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ASP.NET Tutorial/Page Lifecycle/Request - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия