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Silent ClickOnce Installer for Winform & WPF in C# & VB

by Graeme_Grant

This article comprehensively covers the Microsoft ClickOnce Installer with a bare bones WinForm/WPF C#/VB Silent Updater framework plus covers how to implement, troubleshoot, test locally, to release.

Creating a Desktop Application for Converting Audio Files from Each Other

by Michael Haephrati

Desktop application that can be used to convert from and to various audio formats, such as .mp3, .m4a and .wav

Creating Test Objects With FakeModel

by Member 9913858

An introduction to using FakeModel to create test aata for you.

WebRTC Screencasting in Chrome

by Harry Truman

Screencasting (demo screen, screensharing) already works in Google Chrome. The technology allows capturing a window of the browser itself as well as windows of other applicaitons. For example, you can capture Firefox running in a separate window.

Latest Articles

Silent ClickOnce Installer for Winform & WPF in C# & VB

by Graeme_Grant

This article comprehensively covers the Microsoft ClickOnce Installer with a bare bones WinForm/WPF C#/VB Silent Updater framework plus covers how to implement, troubleshoot, test locally, to release.

Disable Driver Signature Enforcement with DSE-Patcher

by Kai Schtrom

How to use DSE-Patcher to disable Driver Signature Enforcement

ftp2? Evolving File Transfer with msgfiles

by Michael Sydney Balloni

A .NET client-server application for sending files over a network

TabCtrl - Adjustable Control with Zooming and Scrolling Tabs

by Aleh Baradzenka

In this article, you will learn about an adjustable control that has zooming and scrolling tabs, dragging with the mouse, custom drawing and much more.

All Articles

Desktop Programming

How to resolve "missing parameter values" error in crystal report?

1 Oct 2017 by #realJSOP

The best solution is to stop using Crystal reports. :) (I'm not a Crystal Reports expert, but I did stay at a Holiday Inn Express last night.)

Minimize all instances of notepad not working on windows 11 | C# code

29 Feb 2024 by _Asif_

As explained by @Dave you need to identify all child windows of a parent window, once you get child window handle you can send message to get them minimize. You can get a working sample from how can i get the child windows of a window given its...

how to export grid view to pdf,excel,word documents..desktop apllicatio

11 Feb 2013 by _Dhull

how to export grid view to pdf,excel,word documents...desktop apllication.help ASAP please

Windows 8 Desktop Application in Javascript?

12 Sep 2013 by _Maxxx_

I know I can write a "Metro" Windows 8 app using HTML5 / Javascript.But can I write a Windows 8 Desktop Application using HTML5 / Javascript?I have looked at .hta - but that looks like it is unlikely to give me access to (for example) touch / accelerometer etc. from a device that...

What is the best method for converting a dekstop app to a web app in another language

19 Nov 2013 by _Maxxx_

I don't know xojo.However, if it is a simple app, you already have some xojo skills, and xojo seems that it will enable you to have both the desktop and web app with a common code base, then I would stick with that.Developing in PHP or ASP.NET or whatever else would seem to me to require...

Button Tip - IsDefault / IsCancel (and other usability tips)

9 Oct 2013 by _Noctis_

Quick tip for forms/windows/views where save/insert/cancel buttons are used

Explorer Context Menu Manager

16 Sep 2015 by _Plutonix

Helper class to add, change and delete Registry based Explorer Context Menus from your app

How to call multiple form in Mainform in particular area without changing Mainform Layout

20 May 2014 by aamitsengar

actually What u want ?Want morethen 1 form in mdi parent form ?then Create a class and then use Get set for Form name if instance of that form is not available then open new form otherwise return Current Window

How can I make Hover effects to windows desktop application using vb.net

5 Nov 2012 by Aarti Meswania

No, CSS RequiredWindows Application Controls Provides lots of eventsCreate Two event of your control1. Mouse enter2. Mouse LeaveNow, For example in mouse enter eventYourControl.BackColor = Color.Greenin Mouse Leave eventYourControl.BackColor = Color.TransperentHappy...

How to import data from access database to sql server 2008 using C#

30 Dec 2012 by Abhimanyu Rawat

HelloI want to import data from access database to sql server 2008 using c#.With some validation means,In Access we have varchar(10) and sql we have varchar(11) then not allow to import data. like vise if name is not match of the column than also not allow to import.Thanks

Launching desktop application from silverlight browser

21 Jan 2013 by Abhinav S

If you are running the Silverlight application in the browser, it is not possible at all.SL runs under high security constraints and thus it is not possible to run anything outside of the browser.Silverlight out of browser applications[^] run with elevated privileges and there might be...

What is the best method for converting a dekstop app to a web app in another language

19 Nov 2013 by Abhinav S

I guess rewriting a VB6 program in any web based language would take more or less the same time.It depends on what the team is more conversant in.One thing you could check is if the same SQL queries can be utilized in both cases.It could reduce some amount of effort.

What the best for retail system?

15 Mar 2014 by Abhinav S

Each of these languages can help you achieve the same objective. Pick what you are comfortable in.

web_development

How do I make an Event in the Usercontrol and Have it Handeled in the Main Form?

28 Apr 2015 by Abhinav S

Pass the event to the main form.For e.g.class UControl : UserControl{ public delegate void ButtonClickedEventHandler(object sender, EventArgs e); public event ButtonClickedEventHandler OnUserControlButtonClicked; public UControl() { ...

Understanding DateTime struct in .NET Framework (using C#)

13 Aug 2014 by Afzaal Ahmad Zeeshan

Understanding the DateTime struct and using it inside your software to display Date and Time and to do the DateTime mathematics

Active program only when usb plugged in

18 Mar 2017 by Afzaal Ahmad Zeeshan

Then provide a read-only USB stick that contains the executable, and provide a function that checks if the executable is currently inside a removable storage or not, if in a removable storage then run otherwise halt. You can check by having a look at the path where executable is, and finding out...

Implementing a C# “cache” for a legacy .NET 3.5 “desktop” application?

1 Sep 2020 by Afzaal Ahmad Zeeshan

Recommendation is to never get your hands dirty for such performance-oriented parts of your application unless you have a solid experience/understanding. Oh, before I start the answer, I should suggest that migrating the code to .NET Framework 4...

How to resolve "missing parameter values" error in crystal report?

24 Jan 2018 by Agarwal1984

Hello, I want to display my logo in Crystal Report, but its getting error "Missing Parameter Value". I added parameter but its getting error. Please help me. Thanks in Advance. Regards Ankit Agarwal Software Engineer What I have tried: myCRReport cr=new myCRReport(); DataTable dt =...

A Simple WPF Text Clock Gadget for Windows

28 Jan 2013 by Agent__007

A simple WPF text clock gadget for Windows

I need solution for system.formatexception: 'the string was not recognized as a valid datetime. There is an unknown word starting at index 0.'

16 Mar 2022 by ahmedbelal

i need to Edit row in database from DataGrid View the Problem is i need solution for System.FormatException: 'The string was not recognized as a valid DateTime. There is an unknown word starting at index 0.' i click f10 and compiler work my...

stored-procedure

System.nullreferenceexception hresult=0x80004003 message=object reference not set to an instance of an object.

29 May 2022 by ahmedbelal

System.NullReferenceException HResult=0x80004003 Message=Object reference not set to an instance of an object. when add new customer i want to make pictureBox accepted Null Error Here byte[] img; MemoryStream ms1; ms1 = new...

stored-procedure

Linq To Collection Issue

11 Jun 2013 by AhmedYehiaK

Hi everyoneI have an issue in the following Linq to collection query it give me the wrong result and i spend a lot of hours to discover the issue, so kindly tell me if you see anything error:The wrong is on the condition The case is:I want to filter the listed items be provide a...

check if website sends a cookie

1 Jun 2012 by AHSAN111

hi, I am working on a google search project which requires me to provide functionality to export the search results for input terms comming from the user as input. An additional requirement from the user is to identify if the urls of the returned results drops a cookie on the user Pc....

I have the no. I1314006275 and a textbox in windows forms 2010, how i can set I1314 i.e the first five digits so that user don''t have to type every time I1314 in textbox.

3 Oct 2013 by alanmaster

I have the no. I1314006275 and a textbox in windows forms 2010, how i can set I1314 i.e the first five digits so that user don't have to type every time I1314 in textbox.

SplitterCtrl - A control for the partition of some window by several parts

16 Mar 2021 by Aleh Baradzenka

In this article, you will learn about a control that is necessary for the partition of the dialog, main or child window of your program by several parts.

TabCtrl - Adjustable Control with Zooming and Scrolling Tabs

25 Mar 2021 by Aleh Baradzenka

In this article, you will learn about an adjustable control that has zooming and scrolling tabs, dragging with the mouse, custom drawing and much more.

OutlookTabCtrl - Another Kind of Tab

16 Mar 2021 by Aleh Baradzenka

This control is another kind of tab. Tabs are displayed as horizontal stripes and can be collapsed into buttons. Each tab is assigned its own window, which is shown when you click on the tab.

How to clear the run box history list that pops up

15 Oct 2012 by Ambesha

Freind, try this and implement the same in your code if required: Delete Specific Items: Go to Start --> Run --> Type "regedit" in the Run dialog box. When in the registry, browse to the following key: HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>RunMRU. Delete...

make a marquee progress-bar programmatically

11 Oct 2012 by AmitGajjar

Hi,You can apply style to your progress bar. yourProgressbar.Style = ProgressBarStyle.Marquee;Hope it works for you,Thanks

Does not Fire DataGridView_EditingControlShowing

7 Jan 2013 by Animesh Datta

Hi Everyone....I have a datagridview which has one comboboxcolumn which has 3 Items.Now to get which Item is selected(from DataGridView comboboxcolumn ) I have used EditingControlShowing event . It Works fine ,but if i change the selected item without editing the datagridview...

How to make a Attendance Register in desktop Application

15 Jan 2013 by Animesh Datta

Hi Everyone....I would like to generate attendance sheet.. i thought of using either grid or table, and Number of columns in the grid/table will be around 30 columns(for 30 dates in a month) along with employee name and empid (it is just like attendance register). If administrator select the...

How to pause and stop Parallel.Foeach loop in C#

28 Feb 2013 by Animesh Datta

Hi Everyone...I have a Parallel.Foreach loop by which i load a listview , i have a button for stop the execution.Now my question is , when the execution is going on if i push the button then the process will be stopped .I found some code in net but nothing happens.my code is private...

Crystal Reports can not give good Image quality at print time

5 Feb 2021 by anoopgoyal

Solutions 2 works for me. Thanks.

about desktop applications

26 May 2012 by Anurag Sarkar

Desktop applications are installed on PC/LAPTOP & then you can work on them it can not be used by several users. Unlike Web Application.Thanks

manage internet data use in c#

4 Apr 2013 by Archit Patel

Hello Every one...I work on one desktop application in which i want to manage internet data use by particulate time duration. any way to get this type of data use in c# application.

Auto login to website

27 Jun 2013 by Archit Patel

Hello..i work on one desktop application in which i want to do auto login to website. means i want one application which ask me the login page url,username and password and when i click on login button it automatically try to login and if login fail than it try agian and agian still login...

How to read HardDisk Temperature?

27 Aug 2013 by Archit Patel

Is it possible to see the Hard Disk temperature with some kind of S.M.A.R.T API or anything like that?if yes than how ?i want to use it in one desktop application.

ManagementObjectSearcher not found

11 Mar 2019 by Archit Patel

this is my code it gives error . it could not found ManagementObjectSearcher class from using System.Management;my codeusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using...

Text in label not shown proper in window form

27 Aug 2013 by Archit Patel

i work on one project in that i make my window from transparent. in that one label in that label text set by dynamically. after set the text it shown like below link image.http://i.stack.imgur.com/rmCM5.jpg[^]i want clear type text in the label.please help me to solve out this.

Crystal Reports can not give good Image quality at print time

9 Sep 2016 by Archit Patel

I work on one c# desktop appication.in that i use Crystal Reports.In it there are one header and in header i put one static .jpeg image file .When i get report at that time the image in header is not display in good quality. But the original is in good dpi and also in good quality than also it...

Access 2003 connection in window 7 64 bit

10 Sep 2013 by Archit Patel

I have one application.which is made in vb.net using microsoft access 2003 database. i make setup and try to install it in window 7 64 bit .it install successful but database connection not occurred.it given below error. Exception Text...

Changing cell background color based on two cell data value in Datagridview

18 Sep 2013 by Archit Patel

I have one data-grid view which is bind dynamically. and it contain data like below screen shot.Image Linkhttp://i.stack.imgur.com/RZOSN.jpg[^]Now problem is i want change cell color based on data value. i want to deduct tamount-paymentamont and if it >=1 then i want to set this two...

Changing cell background color based on two cell data value in Datagridview

18 Sep 2013 by Archit Patel

i try this and it work for me.. for (int n = 0; n

M.S. Access Database with setup file. (should work for crystal report also)

4 Oct 2013 by Archit Patel

Hello...I work with one c#.net desktop application which use Access Database.I also put the crystal report with given static database path.(My database path is like "E:\Data.mdb").Now problem is i want to make setup file which can contain database file as well as SAP crystal report...

How to set relative the crystal report data source location (Access Database)

24 Sep 2013 by Archit Patel

I work on the c#.net window from application, in that i want to add crystal report.i know how to add crystal report and data source connection.But problem is i want to add data source connection relative path (like Data Source=|DataDirectory|Db.mdb or something else) so any computer can...

Open Powerpoint Presentation from C# Window Form.

29 Sep 2013 by Archit Patel

Hello,i am working on Office PowerPoint 2007 using c#. i want to open the power point document, so i have done some code for the same. but am facing one problem. i have attached code spinet as follow.And i also add the reference of...

question regarding vb.net

9 Apr 2012 by arpita mondal

how do i get system date in vb.net? and also i wannna store that date in my database

get control from grdview

24 Apr 2012 by Arun Kumar K S

How to get the gridview cell control in windows form application using row and column index. controls means combox in gridviw cell I can get it from EditingControlShowing event in there using (ComboBox)e.Control;My question is how to get it using row and column index

web browser with encryption support

3 May 2012 by Arun Kumar K S

I want to create one web browser that can encrypt webcontent(https) how I can do this using web control in .net

remote desktop application

24 Jul 2013 by ArunRajendra

Try this link. http://devproconnections.com/net-framework/how-consume-wcf-service-using-wpf[^]

Desktop application like word web (http://wordweb.info/free/)

29 May 2016 by ashwini kumar

I need to make a Desktop Application with following features :Once installed, it gets launched at the time user logs in and runs in the background.If the user selects some text from browser or from notepad and clicks a particular key combination the application gets activated and the text he...

Is there a way for a Program ran on a Client system to See events that happen inside the Host Remote Desktop Window?

16 Apr 2014 by AsmoconX

The situation (all parts of program are built using C#):The program MUST run on a CLIENT PC. A user will manually login to the Host using windows built in Remote Desktop Connection. Only one Remote Connection will be open at any given time.I am curious if there is a way for the program...

Capturing Key Strokes and Doing a Post back

11 Oct 2013 by ASP.NET Community

Capturing Key Strokes and Doing a Post backWith the invention of Web 2.0 customers are becoming more and more demanding when it comes to

How to extract data from a TextBox to a GridView (multiple rows to be displayed in the GridView)?

3 Oct 2013 by Azee

Hey there, You could save the DataTable in the Session after adding row to it.This way when you want to add another row, just get the DataTable back from Session, add a row to the table, bind it to the GridView and save it back to the same SessionHere:Use this statement:If...

read column A from excell and post column B in datagrid

21 Jan 2013 by bart.janssen

I 'm pretty new to c# and try to look for a solution to create a little first app with excel.What I try to do is to make a order list and later I want to export to PDF.Step 1 scan a barcode and post to first column in data gridStep 2 search the barcode in excel and post back the...

read column A from excell and post column B in datagrid

31 Jan 2013 by bart.janssen

private Microsoft.Office.Interop.Excel.Range GetSpecifiedRange(string matchStr, Microsoft.Office.Interop.Excel.Worksheet objWs) { object missing = System.Reflection.Missing.Value; Microsoft.Office.Interop.Excel.Range currentFind = null; ...

How to stop loading the Windows 7 desktop after login

17 Jul 2012 by bbirajdar

Check the solutions...

C# Desktop application

28 Aug 2012 by bbirajdar

Start herehttp://msdn.microsoft.com/en-us/library/dd30h2yb(v=vs.80)[^]http://msdn.microsoft.com/en-us/library/ms754130.aspx[^]Code samples[^]

Open Powerpoint Presentation from C# Window Form.

29 Sep 2013 by Bernhard Hiller

In the folder where you found Microsoft.Office.Interop.PowerPoint.dll, there is also a office.dll. Add a reference to it.

Invokerequired is false when opening form for second time

6 Aug 2023 by Bhavin Pokiya

I have created windows forms application with target framework 4.7.2. I am doing USB communication with device. I have 4 buttons on UI from which 2 button enable(connect and disconnect) and 2 disabled(download data and download log), when I click...

C# dns raise no such host is known

19 Dec 2016 by bhudev

Hello ,i have to try to connect one ip address in my desktop application with the dns.beginhostentry but it gives error "no such host is known" while i am using with alias its works fine for the same ip address. example :string ip_address ="123.456.789.012" string alias...

good desktop gui design

5 Nov 2012 by bikramjeet.sm

Hello guys I need a help regard desktop gui design i want to make up my desktop application buttons, gridview and window form also. example u can see window form of MS office it just a example how can i make this kind of gui in .net plater form.Thank You

How to clear the run box history list that pops up

15 Oct 2012 by Bitla Phanindra

To delete the run box history:Go down to your start menu and right click on the start button. A small menu will appear. Choose properties. The taskbar and Start menu Properties will appear. Go to the Start Menu tab . Remove the tick next to Store and display a list of recently...

Windows Service to block RDP attacks

28 Jul 2015 by Bjørn

A Service listening to Windows EventLog, recognizing attacker IPs and block them in the Windows Firewall.

Setting The Virtual Desktop Background (In Windows 10)

15 Sep 2015 by Blondy314

An application which allows you to set a different wallpaper for each desktop

How to control starting-loading the desktop in Windows 7?

8 Jul 2012 by caof2000

Hi folksI would appreciate if anybody any can guide me on how can I control the start (load) of the windows 7 desktop?This is the specific scenario:After turning on a machine and log on, I would like to start a specific program (that I would develop) that needs to interact with the...

saving a form with vb.net

29 Sep 2012 by Casey Sheridan

How about the program settings? In the Solution Explorer, right-click on the project and click on "Properties"In properties, navigate to "Settings" and create the settings you want to store.Then reference these settings by the tag:My.Settings.[SettingName]Any further questions, just...

Desktop Switching sample code that works in .net2.0

21 Nov 2012 by cellurl

using System;using System.Threading;using System.Collections;using System.Diagnostics;using System.Runtime.InteropServices;using System.Collections.Specialized;using System.IO;namespace Desktop_withExplorer{ public class Desktop : IDisposable, ICloneable ...

how to work on DataGridview's Specific column Event

29 Mar 2014 by CHill60

You can use the EditingControlShowing[^] eventThere is an example on stackoverflow[^]and at wrox[^]and msdn[^]

how to allow background code in desktop application

7 Jan 2015 by CHill60

Further to the comments from @Praveen Kumar Upadhyay you might find this CP article useful Monitor and Manage Services on Remote Machines[^]

How to pass a row of a datagriview to another form controls ?

4 Mar 2016 by CHill60

Have a read of OriginalGriff's articles on passing information between formsThis is the first oneTransferring information between two forms, Part 1: Parent to Child[^] - there are links to the others within the article

Which database to use, service based or local SQL server db in visual studio desktop app?

13 Mar 2017 by CHill60

Further to Solution 1, you might find these articles in the MSDN documentation useful:Planning a SQL Server Installation[^]Best Practice recommendations for SQL Server database backups[^]MS SQL Server Administration[^]By way, I think you mean Server based not Service based - however...

How to license winform application

23 May 2017 by CHill60

See this Codeproject article: A Ready To Use Software Licensing Solution in C#[^] And these discussions: How to: License Components and Controls[^] copy protection - License for C# desktop application - Stack Overflow[^] How do i licence my c# app?[^] All of which will lead to other examples

Reporting tool in visual studio desktop application

15 Nov 2018 by CHill60

Tableau is popular I'm told. There are alternatives depending on how much and if you are prepared to pay Starting points for your research Top 10 Alternatives to Tableau: Analysis of Popular Business Intelligence Tools - Financesonline.com[^] 16 Tableau Alternatives for Visualizing and...

Create Video from images add Audio into that images

6 Feb 2012 by Christian Graus

Please in future use real tags. Desktop ?AVIs are large, because they are not compressed. Compressing is slower, of course. Or you can compress after creating the file. There's tons of articles on video creation on this site.

Fomration of Searching Query on the basis of Combobox

7 Nov 2013 by Christian Graus

Your code is a nightmare. For a start, it's using ifs instead of a switch. Second, string mashing SQL is always bad. If you stop and look at your code, you are looking for booknumber n+1 where n is the checked item. That logic is pretty easy to work out in a loop, creating a list of items to...

How to automatically open a combo-box when value select value from another combo-box ?

2 May 2019 by Christian Graus

https://www.codeproject.com/Qu...

How to add reference to Microsoft.Office.Interop.excel for Excel 2013?

23 Nov 2014 by Christopher Fernandes

I have a Desktop based application in which i want to add reference to Microsoft.Office.Interop.excel for Excel 2013. I seem to not find any way to do that. Neither are the PIA's available for Excel 2013.Please help.Thanks in advance

BLE windows 10 C++ how do I get ALL services for a device

5 Jul 2017 by cjecje

This seems like it should be simple but I'm having problem correlating multiple services for a device. I need to read characteristics for I have multiple devices, each has a custom service as well as implementations for some of the generic services. I thought that if I enumerated based on my...

Inserting XAML programmatically in application

12 Jun 2012 by Clifford Nelson

You can also do things in XAML, and there are cases where this is better. Maybe not in this case, but some things just do not work well programatically:string Xaml= @"; ...

need help in binding data in a datagrid

23 Sep 2012 by Code-Hunt

Hi allDim ds1 As New DataSet() 'Dim ds As New DataSet() Dim sql1 As String = "SELECT sum(present) FROM attendance where present='1' and Emp_id='" & TextBox1.Text & "'" Dim connection As New SqlConnection(str) Dim dataadapter1 As New SqlDataAdapter(sql1,...

How to read HardDisk Temperature?

27 Aug 2013 by Code-Hunt

How-to-retrieve-hard-drive-tem...

ManagementObjectSearcher not found

27 Aug 2013 by Code-Hunt

managementobject-class-not-sho...

Multiple log files from one application, using log4net.

8 Jun 2012 by CodingLover

Learn how to manage multiple log files in a single application using log4net.

Windows 7 Dual Monitors; monitor causes desktop to rearrange

21 Oct 2013 by CodingLover

Hi all,Every-time once I connect/disconnect the second monitor and extend I have to re-arrange all the shortcuts on my desktop. So I have to spend lot of time to re-arrange them all. How can I stop this, comments really appreciate.Thanks in advance!

Generating Temporary PDF Files

18 Apr 2012 by coolloud13

Hi!!I wanted to create a temporary pdf file based on the results, and allow user with a choice to either save or discard the file.I know how to create pdf files but I wanted to know how to create "temporary pdf file".[Working on some desktop application]

Is there anything like Lost Focus in C# desktop applications?

21 Apr 2012 by coolloud13

As you might know there is a event called "LostFocus" in web applications,,and I was thinking is there something like "LostFocus" in Desktop Application,,?If YES guys please help me out,,I have tried but getting nothing,,Thanks!

Desktop application - "another version of this product is already installed"

15 Oct 2013 by cyanceenu

Hi..I have a desktop application developed in VS2008,I have created a setup (msi/exe) for that application in a setup project..everything is fine.. installation successful.I have another application of same kind and created setup for that application also.But When I try to...

Logic Improvement on Code: Get the Supplier ID of selected Supplier Name (combobox value) to appear in a textbox

27 Jun 2012 by DamithSL

you can check cbosupplier.SelectedItem value before search on database. if there is empty or default value, you can avoid before search var supplier = cbosupplier.SelectedItem.ToString();if(!string.IsNotNullOrEmpty(supplier)|| supplier != "please Select supplier"){ // search on...

I have a desktop application which need to be running at all times. But some one closes the application.

22 May 2014 by DamithSL

Use Timer[^] and write the application status on every minute or 5 minutes... to a text file or database. ref:http://social.msdn.microsoft.com/Forums/windows/en-US/43daf8b2-67ad-4938-98f7-cae3eaa5e63f/how-to-use-timer-control-in-c?forum=winforms[^]

How to enum desktop icons on MS Windows!

14 May 2012 by Darkcharm

Now I need to enum all the "ICON" on the desktop such as "My Computer" and other .lnk s.After that I will draw the ICONS to a HDC and get the image data,also,I need the dest file of the .lnk s..How could I do ? I read some about Windows shell but I still don't know what to do...

Background worker does not work properly in WPF

8 Nov 2012 by Dave Kreskowiak

Following your code, you completely wrecked the purpose of doing work on a background thread.In the DoWork method, on a background thread, you told the UI thread (this.Dispatcher.Invoke) to execute the long running code, completely removing the point of the background thread.The...

Building a rental desktop application

23 Feb 2019 by Dave Kreskowiak

You're going about this the wrong way. What's the point of the exercise? Are you going to be writing an app or learning a language? You can't do both at the same time. Attempt that and you end up badly writing the application and barely learning the language/framework. Why is that? This is...

I'm facing nullreferenceexception error in C# desktop application

8 Feb 2020 by Dave Kreskowiak

First, a pet peev of mine. Why are you calling .ToString() on textbox.Text properties? IT'S ALREADY A STRING!! That's what a Text property returns! A NullReferenceException occurs because your code is making assumptions about things working or returning data when it doesn't. A variable contains...

Can you create an app that's integrated into windows and can't be uninstalled?

3 Jun 2020 by Dave Kreskowiak

Considering you can even uninstall Windows itself, no there isn't. Think about what you're asking in the world where viruses and malware run rampant and then think of what would happen if those apps found a way to do what you want. THAT is why...

Implementing a C# “cache” for a legacy .NET 3.5 “desktop” application?

1 Sep 2020 by Dave Kreskowiak

Caching really isn't going to help much with that problem. First, loading all the records doesn't scale well, even if you cache the result. You're just transferring more and more data all in one block. The problem you have is that you're...

Windows service launch UI in wrong user session in RDP multiuser session

13 Jul 2021 by Dave Kreskowiak

Save yourself the pain of this not working at all in future versions of Windows and create a small application that launches on user login. This app can "register" itself with the service application, receiving notification from it and launching...

Unable to cast object of type 'system.int32' to type 'system.byte[]'.

6 Apr 2022 by Dave Kreskowiak

Reposting the same question will not change the answers, nor absolve you from actually thinking about what your code is doing. There is only one place in that line of code where you're converting something to an integer, then you're casting that...

SQL-Server-2017

stored-procedure

Memorystream .netcore run exe file

10 Dec 2023 by Dave Kreskowiak

You cannot run an executable from anything other than an actual file on disk.

Minimize all instances of notepad not working on windows 11 | C# code

29 Feb 2024 by Dave Kreskowiak

Look in Task Manager, on the Details tab, and you'll find that no matter how many Notepad WINDOWS you have open, there is only ever one instance of Notepad.exe, and only ever one "MainWindowHandle." On Windows 10, there will be one instance of...