Click here to Skip to main content
15,891,828 members
Everything / Web_application

Web_application

web_application

Great Reads

by Danny Chu
Learn how to detect if client has JavaScript enabled or disabled at your backend webserver
by veen_rp
A small JavaScript module to create a modal dialog box or user input box in the familiar .NET style
by Richard Eng
A tip for creating a web application using the easiest programming language and framework you can imagine
by lakhdarr
Control and directives for address form auto completion using Google map V3 and JQuery/AngularJS

Latest Articles

by Adrian Wadey
Using httpListener, WebSockets and JavaScript to add a remote control for a Windows Forms program
by GauravGahlot
In this article, we are going to set up a Release Trigger to automatically deploy our application on Azure App Service as a Docker Container, each time we push our code.
by MukeshKumarTech
This article will demonstrate you about what Azure Web App is and how can you create it and deploy your own files using FTP client.
by Richard Eng
A tip for creating a web application using the easiest programming language and framework you can imagine

All Articles

Sort by Updated

Web_application 

9 Oct 2023 by OriginalGriff
Compiling does not mean your code is right! :laugh: Think of the development process as writing an email: compiling successfully means that you wrote the email in the right language - English, rather than German for example - not that the email...
9 Oct 2023 by Graeme_Grant
Still unsure which line is throwing the error... The full error message with stack trace would identify where the error occurred. Have you set a breakpoint and check the line with the error? At a guess, report.InCorrectMapping &/or...
9 Oct 2023 by musfirah hamid
I have 2 accounts one is confirm and other one is unconfirm. whe user click on reportComparison button, it shows data of both accounts. if user think data is wrong he can change it from available dropdowns,dropdown is also on the same page. and...
2 Oct 2023 by Solution Hall
I built a real-time ERP software for a client that has been running since the last 3 years. The front end of the project is a Windows Forms desktop application built in VB.NET (in Visual Studio 2017). And the back-end is in MS SQL Server 2016. ...
29 Sep 2023 by OriginalGriff
It really depends now how you wrote the original application - if it's organised as separate modules: Presentation Layer, Business Layer, and Data Layer as separate Assemblies for example then it should be pretty simple to just respecify the PL...
3 Jun 2023 by Rafael Falagan
Hello: I'm trying to convert an existing integration to UPS web services to the new Web API using OAuth 2.0 security model. I would like to be able to pick up as much logic as possible from the current implementation using web services. Not...
5 May 2023 by Graeme_Grant
I popped your question into Google Search: How do I package office web add-in for Microsoft store[^] and this was in the section "People also ask:" .How do I package an add-in?[^] To package and publish your add-in using IIS, FTP, or Web Deploy...
5 May 2023 by Member 15893644
I have developed an Event-Driven Office Web Add-In for Outlook in Visual Studio Code based on one of the examples at github. I tested this Add-In by creating a distribution directory using npm run build , put this on our server, and verified that...
21 Mar 2023 by Alessandro Terzi
I have a web application done in c#, when I start it from visual studio, it works without problems, however when I try to upload it to IIS and open it via localhost it gives me this problem. https://imgur.com/Eij19uo What I have tried: ...
21 Mar 2023 by Alessandro Terzi
In reality it gives me the impression that the error says nothing, also because starting the web app from visual studio it works perfectly, however I went to the "Event Viewer", "Windows Logs", "Application" setting and you should find the error...
20 Mar 2023 by OriginalGriff
Read the error message: it gives you explicit instructions on what to do to get the actual error information. You cannot solve this problem from that error message - nobody can - you need the actual error information that caused the system to...
10 Dec 2022 by Nischal Shar
I am unable to make this login form responsive It looks fine in desktop view but it deosn't look same in smartphones I've made this using html and CSS.It looks like the problem is with width or height in opening this on smartphones here's the...
10 Dec 2022 by CodeGuru84
To make your HTML form responsive for small devices, you can add the following CSS rules to your code: @media only screen and (max-width: 600px) { /* Make the form container smaller */ .center { width: 80%; height: auto; } /*...
10 Dec 2022 by Sascha Manns
Currently i'm trying to upgrade my old blog to .NET 7. While upgrading i thought, i can remove all hardcoded stuff, so everyone can use it. I have the following Program.cs: public static void Main(string[] args) { var builder =...
10 Dec 2022 by CodeGuru84
The error you're seeing is a NullReferenceException, which occurs when you try to access a member of an object that is null. In this case, it looks like the _config field in your SeedData class is null when the UserAsync method tries to access...
10 Dec 2022 by Dave Kreskowiak
Yeah, you missed something. Why is UserAsync (bad name by the way) static when it depends on the fields of the class being initialized before it's called? You never create an instance of the SeedData class, therefor the instance variables never...
10 Dec 2022 by OriginalGriff
This is one of the most common problems we get asked, and it's also the one we are least equipped to answer, but you are most equipped to answer yourself. Let me just explain what the error means: You have tried to use a variable, property, or a...
23 Nov 2022 by Samuel Matos
I have a project that in some pages, I need to make prints. But in some files I need to print in portrait orientation, and for other files I need to print in landscape orientation. To dont let the person wasting time and patience reconfiguring...
23 Nov 2022 by Richard Deeming
If you're using a Chromium browser (Chrome, Opera, or a relatively recent version of Edge), then you should be able to use the "paged media" CSS rules to control the orientation and margins: Paged media - CSS: Cascading Style Sheets |...
21 Sep 2022 by Patrice T
Quote: am very confused now. What should I do, Does Pseudocode really helpful for Programming. Pseudocode can be helpful to write some small algorithm without cryptic syntax of languages, generally for small pieces of code. I prefer mastering...
21 Sep 2022 by palak sharma Sep2022
Hi this is Palak Sharma I am an engineering student, I am learning lots of programming languages here. Python Programming is my favorite programming language. We have taken a project for making Software Application and we are planning for it and...
18 Sep 2022 by CPallini
Here some insight: Pseudocode - Wikipedia[^].
19 Jul 2022 by Member 13809822
Im trying to set a value to a textbox and i have found the HtmlElemnt i need and changed the value of the text box but it seems like the element won't update himself or trigger some lind mof userinput method. the web will say "You must fill this before you can finish" even when you can clearly...
19 Jul 2022 by Николай Каретников
15 Jun 2022 by Sanyam Vikram
I want to create a fast and light weight web application. Could you please tell me which language is best for this type of work. For example, websites like online Plagiarism checker. What I have tried: I have searched for languages and coders...
15 Jun 2022 by Sanyam Vikram
Thank you dave kreskowiak for sharing your views.
15 Jun 2022 by Sanyam Vikram
Hello @Richard MacCutchan @Patrice T Thank you for sharing your views but I asked which languages would be the best for creating fast and light weight apps. I know that HTML, CSS and PHP are required but which one work faster while creating...
2 Jun 2022 by Patrice T
Quote: Which language is best for creating light and fast web apps The obvious answer is learn html and Javascript. W3Schools Online Web Tutorials[^] if html and Javascript are enough for static sites, you need more languages on server side for...
2 Jun 2022 by Richard MacCutchan
You could use PHP: PHP Manual - Manual[^], or ASP.NET | Open-source web framework for .NET[^]. And you will also need HTML Tutorial[^], CSS Tutorial[^] and probably some JavaScript Tutorial[^]. Or maybe The Python Tutorial — Python 3.10.4...
23 Feb 2022 by Michael Varey
I have a variety of domain names that are currently sharing the same IP address and routed to the same server. Now that traffic is increasing, I want to split the domains (only within my network) to different servers while retaining the same...
19 Jan 2022 by Tinsae Teku
Let me explain my issue using a simple example: I have a table with attributes 'id' , 'age', 'sex' and 'grade'. Then I have many student's data list. I have already managed to insert specific data (For example: '0001', '12', 'male' and 'B+') into...
19 Jan 2022 by _Asif_
Its not that difficult. Approach could be like * HashMap filterMaps = new HashMap() * for each column (Id, Age, sex, group, etc) filterMap["Id"] = 001 filterMap["Age"] = 12 * ArrayList list = new...
19 Jan 2022 by OriginalGriff
Build it up as a string collection: each attribute calls a method which appends to a List if the associated check is ticked. When you've assembled them all, use string.Join[^] to combine them: string sql = $"SELECT * FROM MyTable WHERE...
19 Jan 2022 by CHill60
Simplest approach - Use the concept of repeated filtering if(age == 12) { if(gender == "male") { if(grade == 2) { ... } } } You will only have as many ifs as you have attributes
25 Nov 2021 by Member 15440288
i do not get the result i want out in searching I am making the Progressive web apllication (pwa) to work offline but my some of data is in folder which is very time consuming to wite all the dir in service worker js to cache is there any way to...
25 Oct 2021 by Matt Urbeck
I am looking to create an educational software application to sell to schools. What languages should I learn to create this? Any books/websites to learn this would also help. And ideas on how to learn subscription software to keep track of...
25 Oct 2021 by OriginalGriff
Javascript and HTML / CSS are front end stuff for websites: if you want anything that uses databases or permanent / shared storage then you will need back end code as well (I can't remember the last time I saw a site without backend code -...
4 Sep 2021 by Eugene Rutsito
I'm developing a server-side project in c#. The project is like so, it has 'Admin', 'Security', and 'Communicator' which are all independent projects (class libraries). The Admin module handles all the client-side requests. If the request comes...
4 Sep 2021 by OriginalGriff
Surely, Admin references Security, which has a report-back mechanism? And Security references Communicator which should report back to it? OOPs principles means that Admin "knows about" Security (because it has to to do it's job) but Security...
16 Aug 2021 by OriginalGriff
While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...
8 Jul 2021 by Felix Fosu
Hello everyone, I am new to web API and i need to implement a call back url for a web service.I am able to post a request to the uri and receive a json response from the post. I am expected to implement a callback to receive the status of my...
8 Jul 2021 by Felix Fosu
Hello team, i got it now. There was a typo in the naming of the properties in the class. I got it now, thank you.
8 Jul 2021 by Felix Fosu
Thank you @Richard, exactly so, i would like to read and map the response code to the parameter. However, Dim body As String = Await Request.Content().ReadAsStringAsync() returns an empty string.
7 Jul 2021 by Richard Deeming
Quote: command.Parameters.AddWithValue("@ResponseCode", Request.Content()) This line causes the error. If you want to pass the full body content to the parameter, you will need to read it first - for example: Dim body As String = Await...
2 Jul 2021 by SaeedPol
Hello, I've converted my web app to a chrome extension. How can I test my extension before publishing it? thanks, Saeed What I have tried: I have already made the extension.
2 Jul 2021 by OriginalGriff
I haven't tried it, but have you looked at this: GitHub - acvetkov/sinon-chrome: Testing chrome extensions with Node.js[^]
2 Jul 2021 by xxstarosaurus
I need help with a question Q: The admin web api must be able to confirm admin’s credentials using email and password. I would say I have really basic knowledge of the GET, POST, DELETE request. But I am unsure of using these to do...
8 Apr 2021 by Padala Kavya
So I am building this debate app where a question is posted and the user chooses the option to agree,disagree or have a neutral opinion. When the user chooses the option I want them to type the reason in textbox after choosing the option and then...
26 Feb 2021 by co-le
Ive been having troubles with this project for a few days now. I am haing troubles with displaying the vehicles with the selected filter and displaying the images associated with them. Here is a complete list of what i have to do: I Need To -...
26 Feb 2021 by OriginalGriff
We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us...
12 Jan 2021 by sunpop
I need to display a website in a CSHTML file. I could not display many of the secured websites. what is the solution to display any website in my page. Thanks in advance! What I have tried: I used iframe but I could not display many of the...
12 Jan 2021 by Richard Deeming
You cannot embed an https site within an http site. And most sites will specify a content security policy[^] or the X-Frame-Options header[^] to prevent their site from being embedded within other sites. You cannot circumvent this. You need to...
17 Dec 2020 by Dave Kreskowiak
Your hung up on a stupid question. You cannot predict the future, so just pick an architecture that is a good fit your project today and just start writing the code. What comes out tomorrow isn't going to impact what you write today.
16 Dec 2020 by Richard MacCutchan
three layer architecture vs mvc - Google Search[^] Also Difference between MVC and 3 tier Architecture in .net[^]
8 Dec 2020 by cpper2
I decided to start to learn web programming and as a first serious project I want to build a stocks/cryptography portfolio, where user sign in and add their holdings of specific stocks/coins. Users can see the current evaluation of their...
8 Dec 2020 by CHill60
This is somewhat off-topic for this forum, the answers by nature cannot be "quick" nor objective. This is not a forum for expressing opinions but for solving specific problems. You might be better off putting this into one of the discussion...
23 Nov 2020 by Member 14192879
There are two solutions 1. Cut and paste the Web.Config in the from the WebSite folder to the parent folder 2. Recommended Solution: Select the Website itself rather than its parent folder in the WebSite Browser. follow below link: Issue -...
23 Nov 2020 by BobbyStrain
GoDaddy recently moved my Asp.Net site from Microsoft to Plesk hosting. Now an error shows when selecting an app from a folder. Report shows error in that contains only authorizations. How do I fix this? Godaddy help sold me a...
19 Nov 2020 by octavia81
Hi folks, I would like to get some suggestion to gain multilingual web application in a most efficient way. If we use web forms, will it be more hard to achieve? Or if we go .net core or mvc framework, will it be more easier? All options take...
19 Nov 2020 by Gerry Schmitz
A resource is a resource. It "tastes" the same in .NET Core, Framework, whatever. You have different ways of "consuming" it; different ways of prepping it. It works because it is an abstraction with multiple (inter)faces.
17 Nov 2020 by Reza kavian
i want to create short for my project or browser that Which looks like an icon and in mobile phone and The user does not need to enter the address in url.the address bar be hidden What I have tried: i create google qrome shortcut in windows,but...
17 Nov 2020 by Richard Deeming
Sounds like you're looking for a Progressive Web App (PWA): Progressive Web Apps - web.dev[^]
17 Nov 2020 by RickZeeland
Here are some console application routines for a Windows desktop shortcut. Needs a reference to 'Windows Script Host Object Model', under References - COM. Example usage: CreateDesktopShortcut("MyWebApp", "https://localhost:443", true); ...
13 Nov 2020 by RaffaySajjad
I'm learning ASP.Net MVC Core. While trying to call a function through a button click event, I'm getting this error: InvalidOperationException: The model item passed into the ViewDataDictionary is of type 'Book_Store.Models.BookModel', but this...
13 Nov 2020 by F-ES Sitecore
Your View will be using IEnumerable or List or something similar as the model, expecting a collection of BookModel items, but your controller is passing a single BookModel item to the view. You need to either change the...
14 Oct 2020 by Member 14940951
I have a windows forms based web application written on VB.NET and currently being used by a large number of users. I currently am facing an issue where the application is being authenticated with an another user account instead of...
29 Sep 2020 by Richard Deeming
You're loading a file from the same server, so there's no need to use WebClient at all. Just use: string filePath = Server.MapPath(Path.Combine(folder, name)); Response.ContentType = "application/pdf"; Response.TransmitFile(filePath); The...
29 Sep 2020 by octavia81
In my web app, i use webclient class for preview document. But when i toggle (F12) to simulate mobile view (as i used bootstrap), my preview document does not work. What should i do? What I have tried: This is my button click event which is...
14 Sep 2020 by Sandeep Mewara
If you want a web application that supports locationzation and globalization, all the text that is displayed across the application needs to adhere to it. This affects entire app (per page level) Quote: App localization involves the following: ...
14 Sep 2020 by octavia81
We have a couple of web apps using asp.net web form. In all web app, 20 to 30 pages at least. Now our team need to develop all these web apps into multilingual web app. I read some link but those are seem like we will need to change almost...
14 Sep 2020 by octavia81
After almost half day googling, i solved it out. I used virtual directory to make reference that folder path in web server. Thanks guys :)
14 Sep 2020 by octavia81
Any good idea on this? How do i open htm file from asp.net web form application? I have some htm file which are stored in web server, i need to open (view only) those files from my web app. Open as a new browser (tab or new window). I used ...
13 Sep 2020 by BillWoodruff
So, do some research on server-side file access from a WebForm. Relevant content is a Google away: [^] And, keep in mind that security configurations vary: you may need to frame your question very specifically in terms of the context in which...
26 Aug 2020 by BadoingyfaceD
I've built a staff survey tool for my own organization to learn about what is happening with its culture and how to tweak and improve it. I put a lot of time into making it robust and ensuring it translates well into actionable results. I want to...
26 Aug 2020 by OriginalGriff
Start with the backend - design a database to hold the data you need, and treble check that against every possible requirement. Getting the DB right is a major part of the project - get it wrong and it can have a big impact on what you can do...
26 Aug 2020 by Richard MacCutchan
You do not say how you are storing the survey results that are produced from the tool. Assuming you are creating some sort of database then there are plenty of free or commercial tools that can create reports from a database. It is not easy to be...
19 Aug 2020 by Ahmed Yasin
Well I am using django 3.0.3 and python 3.8.5.. ValidationError is not raising error even I am entering different emials... I have tried so many possible way to raise error but non of them work.. What I have tried: ------forms.py------- ...
13 Aug 2020 by HamzaMcBob
Trying to hit log in after putting in email and password for https://app.libertex.com/[^] finally managed to tidy up the tiny bugs for inputting the email and password but it wont hit click If you want to test this stuff on the website your...
10 Aug 2020 by Member 14911434
I've seen step by step guides before on how to set up a bot to email you when a webpage updates but i'm looking for something more immediate? I'm a beginner programmer and i'm looking for a way to program a bot to make a notification sound or...
10 Aug 2020 by Richard MacCutchan
Lots of suggestions here: notify web page update - Google Search[^]
2 Jul 2020 by quintumnia
All the time and committed. The issue has been rising from the back-end databases ;whereby i created one database and the changed to the new one. However,the old database has been creating interference accessing the new database remotely. ...
2 Jul 2020 by quintumnia
I have been testing the login form page with the rightful credentials and the page loads perfectly by verifying credentials and prompts me to access the details,on my local server system. However,I have deployed it on the remote server but...
2 Jul 2020 by Andre Oosthuizen
It seems that this piece of code is causing the hang as $_SESSION['alogin'] is not set, returning to the dashboard.
3 Mar 2020 by OriginalGriff
You should talk to the people who created it - they should provide technical support and will know more about their product than we will. If they don't, then find another supplier and demand your money back!
29 Nov 2019 by Adrian Wadey
Using httpListener, WebSockets and JavaScript to add a remote control for a Windows Forms program
27 Oct 2019 by Member 14192879
I want to change the forecolor of the row which row contains a specific word "MG". I used the below code but it is not working on the web application. What I have tried: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if...
27 Oct 2019 by Vincent Maverick Durano
Quote: firstly I tried by using bound field then my code works well for color changing but my main work is with the Template field so when I check with breakpoints. it does not go to if condition and always go to else statement. what to do?. my code is working properly with the bound field but...
28 Sep 2019 by Member 13861271
I have a hosted web application: http://tuts.techedu.in/kids/sapshidi/snake.html I want to run this inside my .exe I thought I would just be able to use something like: webBrowser1.Navigate("http://tuts.techedu.in/kids/sapshidi/snake.html"); But that doesn't seem to work at all. I do have...
28 Sep 2019 by RickZeeland
The built in Webbrowser control is quite antique, try CefSharp or something like that: GitHub - cefsharp/CefSharp: .NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework[^]
10 Sep 2019 by GauravGahlot
In this article, we are going to set up a Release Trigger to automatically deploy our application on Azure App Service as a Docker Container, each time we push our code.
21 Aug 2019 by Member 14359787
Hello my web application is hosted over internet. My web application is in angular 7. For some purpose i developed a web API in Node JS which is hosted on all the client machines who will use the web application. Both the web application and web API are configured on https. If i run my web...
25 Jul 2019 by OriginalGriff
We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you. So we need you to do the...
10 Jul 2019 by Brett Goodman
There is a new tool that makes it pretty simple - see wisejwebapps.com
12 Jun 2019 by OriginalGriff
If it doesn't work, then the place to start is where you got the code, not a totally different website. They will be familiar with it, we will not.
12 Jun 2019 by Member 14497547
Wan't to send notification on my web app. What I have tried: I've tried Adding Push Notifications to a Web App[^] I'm getting notification after following steps till step 7. How to implement on my work project?
16 Jan 2019 by Member 14083059
I am trying to code for login in asp.net web application form. using sql data base. i am getting error this- "The ConnectionString property has not been initialized." Here i get error dialogbox extension- con = new SqlConnection(str); con.Open(); str = "Select count(*)...
16 Jan 2019 by Dipesh Bagdi
Well, in load event you are reading connection string from config in a local block variable constring , initialize your global variable str with connection sting. partial class Login : System.Web.UI.Page { String str; SqlConnection con; SqlCommand cmd; ...
16 Jan 2019 by F-ES Sitecore
In the load event you put the connecting string in "constring" but you use "str" when opening it, which is a string variable you haven't put anything in yet. Also you define constring in the load event so it isn't available outside of that event. Change the code to namespace NovletyShop { ...
16 Jan 2019 by OriginalGriff
Check the actual string in the debugger: put a breakpoint on the line con = new SqlConnection(str); and look at exactly what str contains. At a guess, it's null or the empty string because the connection string read code hasn't been executed, or the web.config isn't what you think it is. Either...
13 Jan 2019 by Member 14083059
I am write a code for inserting data in database table it work almost well but one value doesn't insert in database table coulumn in database one couloumn show-System.Web.UI.WebControls.TextBox System.Web.UI.WebControls.TextBox System.Web.UI.WebControls.TextBox System.Web.UI.WebControls.TextBox ...