Web Forms :: How To Set Up A HttpListener
Mar 18, 2011
I am instructed to use an HttpListener. A Service will call my URL, for example: [URL] My question is this. What kind of file do I use for a listener. Is it an .aspx file together with its .cs file as usual? If that is the case, I am told to retreive a string in this function below. I wonder how I will set this up in this function below correctly in order for "listen" for this String. I need to see that ipnValid == true. Do I do this in the Page_Load in any way etc.. ? (I beleive the String that is listening for is parsed with request.Form.Keys)
[Code]....
View 7 Replies
Similar Messages:
Sep 5, 2010
I'm having some problems using the httplistener. Basically what I want to do is have my localhost running on [URL]. Under default.aspx.cs I want a listener waiting for the page to get a request. The webpage is then called by for example a console application doing a request to [URL] The problem I'm expering is that I have this code on the localhost running in page load for the page. I realize now that this will just keep my localhost waiting for a reply
[Code]....
This code is run from a console application
[Code]....
Then when I run my console application with this code, I get an error indication the connection had to be forcibly closed. What I'm guessing is that the IIS collides with the listener. Im wondering how and where do I set up a httplistener in a web page?? Is a httplistener neccesary for IIS, or is httplistener used instead of a IIS?? I can't change any port because localhost can only use one at a time? I cant use requeststring because the amount of data I need to send surpass the limit of requeststring.
View 3 Replies
Mar 30, 2011
I have to establish an HttpListener that will wait for requests made by our client's server. I have to receive that request on port 8088 and extract the query string. That is the easy part. I'm running the HttpListener in a windows service. I cannot get it to fire properly. I build the setup project install the service on our server and it never starts. I suspect there's an error with my code.
HttpListenerClass:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;
using System.Threading;
namespace lalalolo
{
class HttpListenerClass
{
bool keepAlive = true;
public void AddToFile(string contents)
{
var fs = new FileStream(@"C:HttpListenerserv.txt", FileMode.OpenOrCreate, FileAccess.Write);
var sw = new StreamWriter(fs);
sw.BaseStream.Seek(0, SeekOrigin.End);
sw.WriteLine(contents);
sw.Flush();
sw.Close();
}
private HttpListener listener;
public HttpListenerClass()
{
ThreadPool.SetMaxThreads(50, 100);
ThreadPool.SetMinThreads(50, 50);
listener = new HttpListener();
listener.Prefixes.Add("http://*:8088/");
}
public void Start()
{
listener.Start();
if(keepalive == true){
{
try
{
HttpListenerContext ctx = listener.GetContext();
ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessRequest), ctx);
}
catch(Exception ex)
{
AddToFile(ex.Message);
}
}
}
}
public void Stop()
{
listener.Stop();
keepalive == false;
}
public void ProcessRequest(object listenerContext)
{
try
{
var context = (HttpListenerContext)listenerContext;
string QS = context.Request.QueryString["ID"];
AddToFile(QS);
}
catch(Exception ex)
{
AddToFile(ex.Message);
}
}
}
}
Service1.cs:
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.ServiceProcess;
using System.Text;
using System.Threading;
namespace lalalolo
{
public partial class HttpListenerTest1 : ServiceBase
{
HttpListenerClass HTTP = new HttpListenerClass();
public void AddToFile(string contents)
{
var fs = new FileStream(@"C:HttpListenerserv.txt", FileMode.OpenOrCreate, FileAccess.Write);
var sw = new StreamWriter(fs);
sw.BaseStream.Seek(0, SeekOrigin.End);
sw.WriteLine(contents);
sw.Flush();
sw.Close();
}
public HttpListenerTest1()
{
InitializeComponent();
}
protected override void OnStart(string[] args)
{
HTTP.Start();
}
protected override void OnStop()
{
HTTP.Stop();
}
}
}
View 1 Replies
Mar 31, 2011
In a Windows Service I implemented an HttpListener that will handle incoming HTTP Requests to a certain port, parse the query string, insert it in database and send a confirmation response. However, the clients said that they were a bit skeptical and asked if the same could have been done via a webpage. Like having an HTTPHandler listen to a certain port. Got me thinking. What would you do in my situation? Go with the HttpListener/Windows Service or HTTPHandler/.aspx?
View 2 Replies
Jun 15, 2013
how to show the progress bar when file is upolading
in windows application with C#
View 1 Replies
May 7, 2015
URL....I use this one as my login, and I addes hyperlink for Forgot Password. But why I can't access the FORGOT PASSWORD.aspx for every time I click it. And when I login it redirects t Forgot Password.How I can access it without logging in?
View 1 Replies
Apr 13, 2010
In our application we are using forms authentication, we have given defaulturl also in the config file. But the problem is that it is not getting redirected to the default url when the session timeout is occuring.
View 2 Replies
Mar 21, 2010
I have been presented with numerous word and excel docs. The goal is to put them online and bind to a database for the fields and also to store data for easy searching and reporting.
Has anyone done anything like this before?
I know the easy solution would be to create a database table for each particula form and also an ASP.net page for each form.
But then there are problems like printing and correct formating so it fits on the page, spaning multiple pages and so on.
And also is there any advice on how to write to PDF straight from the page?
View 1 Replies
Jan 18, 2011
I have a treeview named Treeview1 with checkboxes. I want the child checkboxes to be checked if parent is checked.
I am trying to use a simple code that I found on msdn :
[Code]....
For some reasons I got this error and I really dont understand why:
Type 'System.Windows.Forms.TreeViewEventArgs' is not defined.
warning BC40056: Namespace or type specified in the Imports 'System.Windows.Forms' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.
View 3 Replies
Jan 25, 2010
Really getting better with VS, but I've mostly been displaying data. I'm on a new project and now and I have a lot of data entry forms to create. I created a form to enter data into an access db and got it working. I thought it would be cool to add an edit button that fired a gridview to load on the same page, under my original forms, so that that they could load up the data and edit or delete mistakes. But when I try to update the gridview, it also tries to post the original forms (text boxes), which fail because there is no data in them, and I get an error.
What is the proper way to handle this in asp.net? I'm sure this is kind of a common issue. I've done some searching, but the search terms, like forms and gridview, are kind of generic and I'm not coming up with anything useful. I just need a more experienced person to point me in the right direction and I'll get it figured out.
View 9 Replies
Jun 16, 2013
I do have combo box on my page where the items are retrieved from database.
I have an link label which leads to new form to add value for corresponding column in database.
After add the value, when i click refresh on my current page, the values in combo box must be updated.
I have used this
private void button3_Click(object sender, EventArgs e)
{
this.Refresh();
}
View 1 Replies
Nov 11, 2010
We have a number of projects and across projects cerrtain forms are duplicated.
Is there a way that I can create one form and reuse it across multiple projects?
View 2 Replies
Feb 19, 2011
I am using forms authentication, and for some reason it shuts off my images. I have tried putting them in the same directoy, and still nothing.
If I turn off forms authentication, they come back alive so I know my urls are correct.
View 2 Replies
Feb 24, 2011
My images show up find in design time, and if I have logged in and go back to the page, they show, but upon initial login,they aren't visible. What do I need to do?
View 1 Replies
Mar 7, 2011
In windows forms, there is the "show data sources" under the "data" menu item, and I love it because I can drag and drop the fields I need onto the form and it makes the control automatically.In web forms however, this option isn't there. Why? I try to drag and drop fields from the "server explorer" but it generates grids, I don't want grids I just want to drag and drop the text boxes or checkboxes etc.
View 4 Replies
Apr 8, 2010
Created in VS2008
The login page is created with the masterpage and it has the header picture.
After Logout or run FormsAuthentication.SignOut();
The login page is not showing correctly with the header (from master page).
And the setting on the web.config as below:
<authentication mode="Forms">
<forms loginUrl="Login.aspx" name=".ASPXFORMSAUTH">
</forms>
</authentication>
<authorization>
<deny users="?" />
</authorization>
Is there any reason why the header from masterpage can not be viewed from the login page?
View 1 Replies
Jan 6, 2011
Form1 is for the administrator. It has 5 fields. Field1 has a value for which the other values give details about it. This 5 fields are stored in a table. Form2 is for a user and its a data entry form. This forms has 12 fields. Each label in the form2 corresponds to the value of Field1 in form1. If suppose the admin fields 10 times the form1. The 10 labels of form2 are filled with values of field each time. The above is what I want to achieve. Also the two text box corresponding to the remaining two labels should be disabled for user.
View 2 Replies
Sep 2, 2010
I create a windows forms control library project, And build it. then i want it's dll to my web project, for this i used object tag which can display it on page. I made reference of dll to my project.did the following coding.
<object id="conlib1" classid="clsid:{2483F435-673D-4FA3-8ADD-B51442F65349}"
codebase="Default.aspx" >
<param name="F:sandyWindowWincontrolLibWincontrolLibinDebugWincontrolLib.dll" value="WincontrolLib.dll" />
</object>
although page is asking to install but after that my control should be displayed but nothing is to be shown there.
View 7 Replies
Jun 30, 2010
Below is the error whil i am developing the windows forms. it is coming while login in to the forms. Request For The Permission Of Type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
View 2 Replies
Jun 10, 2010
I'm building a web page that is going to make extensive use of User Controls. Using "LoadControl" it will have one of about 20 different User Controls loaded at any one time. Each User Control is somewhat different, gathering different sorts of data.
I've already built the mechanism to load the User Control and pass strongly typed data to it. But now I'm tackling the part of returning the user data to the Parent Form. I can think of several possible approaches to take but wanted to reach out to the community to learn what the best practice for doing this is.
View 2 Replies
Aug 18, 2015
I am using the ASPNET_Captcha control for my login page. It works fine. However when i implement the forms authentication, the catcha image does not appear.
Do i need the location section in the web.config file? If yes can you share the details for the same.
View 1 Replies
Nov 1, 2010
what are the ways of handling multiple web forms data for saving into database after last form or editing data and saving back to database after last form is submitted.Previously I have used wizard & panels in a single form and also has cached data from multiple form to save when last form is submitted. Are there some better way to handle multiple web forms data for saving and editing ?
View 2 Replies
Mar 27, 2011
I am trying to bind data to a textbox in a web form as I do in win forms using dataset and binding manager.I also want to navigate through data by providing next and previous button. I am not able to achieve it. Could you please help me by providing an example? I don't want to use gridview or listview or any other. I only want to use textboxes.
View 3 Replies
Mar 17, 2011
A requirement of a program I am making is that it can 'print' a given URL into a PDF - the server has a PDF printer installed (and is the default printer), so it's just a matter of printing the page programmaticly, and it seems the best way is to use the WebBrowser control - however, I am running into issues
[Code]....
With the above code, I get a script error 'dialogArguments.___IE_PrintType' is null or not an object' in shdoclc.dll/preview.dlg. If I have wb.Print() to somethign like wb.ShowSaveDialog() (or something like that, can't remember exactly), I notice the 'wb' object's document is a blank page, with just <html> tags and named 'about:blank'. But strangely, almost identical code (without the threading bit in the page_load method) works perfect in a normal Winforms based application.
View 2 Replies
Feb 2, 2011
In my project I want to apply style sheet to all web forms at a time, so how can we do that.
As I am having too many forms it is not possible for me to apply it to all pages individually.
View 4 Replies
