Difference between revisions of "ASPX"

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== Custom Membership Provider ==
 
== Custom Membership Provider ==
−
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/CustomMembershipProvider.cs CustomMembershipProvider.cs]
+
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/CustomMembershipProvider.cs CustomMembershipProvider.cs] Diese Datei im Verzeichnis App_Code platzieren.
 
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/web.config web.config]
 
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/web.config web.config]
 
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/default.aspx default.aspx]
 
* [http://www.claude-glauser.ch/csharp/aspnet/sample1/default.aspx default.aspx]

Revision as of 00:02, 5 February 2009

ASPX Samples

Ein Hello World

Mono:

  • 1. Inhalt in eine Datei mit dem Namen HelloWorld.aspx kopieren.
  • 2. xsp2 im Verzeichnis aufstarten, wo sich diese Datei befindet.
  • 3. Folgende URL im Browser eingeben: http://127.0.0.1:8080/HelloWorld.aspx
<%@ Page Language="C#" AutoEventWireup="true"  %>
<!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">

<script language="C#" runat="server">

    
    
 void ButtonClicked(Object Src, EventArgs E) {
     this.submitbutton.BackColor = System.Drawing.Color.Red;
     this.labelMessage.Text = this.text.Text;
     this.labelMessage.ForeColor = System.Drawing.Color.Pink;           
 }

</script>


<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    
    <asp:Label ID="labelMessage" runat="server" Text="Label"></asp:Label>        
    <hr />
    <asp:Label ID="labelInsertText" runat="server" Text="Write a Text:"></asp:Label>
    <asp:TextBox ID="text" runat="server"></asp:TextBox>
    <asp:Button ID="submitbutton" runat="server" Text="Press me" OnClick="ButtonClicked" />
    </form>
</body>
</html>

Request Parameter auslesen

Bei einer URL http://localhost:49622/HelloWorld/HelloWorld.aspx?myparam=Hehe wuerde das Label den Text Hehe bekommen. 

<script language="C#" runat="server">

 void Page_Load(Object Sender, EventArgs e)
 {    
       this.labelMessage.Text = Request.QueryString["myparam"];        
 }

</script>

Doku fuer Request siehe HttpRequest

Namespaces importieren

Am Anfang der Datei: 

<%@ Page Language="C#" %>
<%@ import Namespace="System.Threading" %>
<%@ import Namespace="System.IO" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

</script>
<html></html>


Code behind

Code in separate Dateien auslagern. Die Klasse muss eine Partielle Klasse sein und von Page erben: 

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Drawing;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        this.Button1.BackColor = Color.Red;
        string text = this.Category.Text;
        Console.WriteLine(text);
    }
}

In der ASPX Seite folgende Direktive einfuegen. In dem Inhertis Attribut wird der Klassenname angegeben. 

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
           Name: 

           Category:  <asp:dropdownlist id="Category" runat=server>
                         <asp:listitem >psychology</asp:listitem>
                         <asp:listitem >business</asp:listitem>
                         <asp:listitem >popular_comp</asp:listitem>
                      </asp:dropdownlist>        

           <asp:textbox id="Name" runat="server"/>

      

           <asp:button ID="Button1" text="Lookup" runat="server" onclick="Button1_Click"/>


    </form>
</body>
</html>

Scriptlets und server side comment

Scriptlets, wie in JSPs: 

<html>
<body>

<%-- Thats a comment --%>

<% for(int i=0; i<10;i++){ %>
  Hello World
  <hr/>
<% } %>
</body>
</html>

Expression syntax

<%$ expression here %>


Beispiel: 

<% for (int i=0; i<8; i++) { %>
     <font size="<%=i%>"> Hello World! </font> <br>
<% } %>

Scopes

Validierung

hello world

<tr>
      <td align=left>Name:</td>
      <td>
        <asp:TextBox id=txtName runat="server" />
      </td>
      <td>
        <asp:RequiredFieldValidator id="ReqFName" runat="server"
            ControlToValidate="txtName" 
            ErrorMessage="Bitte Name eingeben!">
        </asp:RequiredFieldValidator>
      </td>
 </tr>

Masterpages

Die Masterpage (MasterPage.master): 

<%@ Master Language="C#" AutoEventWireup="true" %>

<!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>Masterpage</title>  
</head>
<body>
    <div style="background:yellow">
        This is content on the master page
    </div>
    <form id="form1" runat="server">
    <div style="background: blue" >
        <asp:ContentPlaceHolder id="MainContent" runat="server">
        
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>


Die Contentpage (Default2.aspx): 

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"  Title="Untitled Page" %>

<asp:Content ID="mycontent" ContentPlaceHolderID="MainContent" Runat="Server">
This is my content.
</asp:Content>

IHTTPHandler

HTTP Handlers sind analog zu Javas Servlets. Die Datei mit dem Sourcecode sollte im App_Code Verzeichnis abgelegt sein:

Der Code: 

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

/// <summary>
/// Summary description for HttpHandlers
/// </summary>
public class MyHandler : IHttpHandler
{
    
      public void ProcessRequest(HttpContext context)
      {
         context.Response.Write("<H1>This is an HttpHandler Test.</H1>");      
         context.Response.Write("<p>Your Browser:</p>");
         context.Response.Write("Type: " + context.Request.Browser.Type + "<br>");
         context.Response.Write("Version: " + context.Request.Browser.Version);
      }

      
      public bool IsReusable
      {
         get { return true; }
      }
		
	
}


In der Konfiguration: 

<httpHandlers>
     <add verb="*" path="myhandler.aspx" type="MyHandler"/>
</httpHandlers>

Doku: ihttphandler

IHttpModule

Ein Http Modul ist analog zu Javas ServletFilter. Im Verzeichnis App_Code in einer Datei blabal.cs 

public class HelloWorldModule : IHttpModule
{
    public HelloWorldModule()
    {

    }

    public String ModuleName
    {
        get { return "HelloWorldModule"; }
    }

    // In the Init function, register for HttpApplication 
    // events by adding your handlers.
    public void Init(HttpApplication application)
    {
        application.BeginRequest +=
            (new EventHandler(this.Application_BeginRequest));
        application.EndRequest +=
            (new EventHandler(this.Application_EndRequest));
    }

    private void Application_BeginRequest(Object source,
         EventArgs e)
    {
        // Create HttpApplication and HttpContext objects to access
        // request and response properties.
        HttpApplication application = (HttpApplication)source;
        HttpContext context = application.Context;
        string filePath = context.Request.FilePath;
        string fileExtension =
            VirtualPathUtility.GetExtension(filePath);
        if (fileExtension.Equals(".aspx"))
        {
            context.Response.Write("<h1><font color=red>" +
                "HelloWorldModule: Beginning of Request" +
                "</font></h1><hr>");
        }
    }

    private void Application_EndRequest(Object source, EventArgs e)
    {
        HttpApplication application = (HttpApplication)source;
        HttpContext context = application.Context;
        string filePath = context.Request.FilePath;
        string fileExtension =
            VirtualPathUtility.GetExtension(filePath);
        if (fileExtension.Equals(".aspx"))
        {
            context.Response.Write("<hr><h1><font color=red>" +
                "HelloWorldModule: End of Request</font></h1>");
        }
    }

    public void Dispose() { }
}

In der web.config Datei: 

<httpModules>
  <add name="HelloWorldModule" type="HelloWorldModule"/>      
</httpModules>

Custom Membership Provider

Resourcen

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