winforms

I have created a function named ClearAllAfterSale() in which I Clear DataGridView, Textboxes and reset Labels as shown below: private void ClearAllAfterSale() { DGV_Med.Rows.Clear(); Lbl_Total.ResetText(); Lbl_Total.ResetText()...

Hey Community! Happy to be here. I have a form that contains a custom list control. In this list control, is a flexlayout control called flpListBox with rows of results. I am having problems catching the click event of each item. I can MessageBox the sender object key (the song name in this...

We have developed a windows forms application that captures user interactions i.e. Typed text, clicks. Sometimes, out of the blue on some machine, we get the following exception: Object reference not set to an instance of an object. at System.Environment.GetStackTrace(Exception e, Boolean...

Greeting, i am not sure if my title is perfect/good to understand.. but still here is the scenario.. there is a 3rd party software that save the selected printer on Printer setup dialog into registry.. but not in a very common way like the printer name, instead they save some hex/bin data to...

Greeting, i have manually convert a vb.net design file to c# file. though it's working/showing fine on run time.. but on design view it's not showing anything (controls) this is how it looks like on design view: And this is how it looks likes on run time: after many hours of trying i...

i have a datagrid view that displays the information in a table, there is a created row which stores dates how ever when the information is loaded into the datagridview only the first number is displayed, currently the format of the date is yyyy-MM-dd, if you change the format to say dd-MM-yyyy...

In Visual Studio 2019 there are two template types called: Windows Forms App A project template for creating .NET Windows Forms (Winforms) Windows Forms App (.NET Framework) A project for creating an application with a Windows Forms (Winforms) user interface Is the only difference where...

i have trying to read a database and display it into a datagridview but i keep getting the error private void nameSearch() { using (SQLiteCommand cmd = connAccount.CreateCommand()) { connAccount.Open(); try { connAccount = new...

I normally manually populate my forms fields and handle everything from there owing to years ago giving up owing to all the practical problems with bound Winform controls in all but the simplest scenarios. Thought I'd give it another shot. I have a grid populated with a datatable (not...

Hello! Here's the following code that I have problem with. The problem is that everytime I put in Timer.start(); and Timer.stop(); the code doesn't work properly. When I hold and release shift the text is stuck at "Shift is held" and the Timer isn't starting at all. Is there any way to fix that...

Hi, I'm new here and my problem is easily explained. If I create a setup project with VS2019 the graphic for the folder browsing during the setup is pretty old like it's Win95, I'd rather have one more "good-looking", perhaps one that adapts on the O.S. like the openfile dialog window. Also, one...

I want to minimize my windows form when i clicked anywhere outside it.... But this code will just close the whole program, can anyone help? I want to hide the app to taskbar, and when i press it from taskbar it shows up again....... Here is the code: protected override void...

For example, I need to write a program that automatically turns on and runs the first process of an application within 30 seconds, then automatically disables it, and launches the third process of that application in 30 seconds. Within 30 seconds of running the first process, the program...

Hi All, Does anyone know any methodology to create direct print-out from datagridview. From googling what i found is that it's quite complex process. Is there any package available to dot the same (i.e. nugget package). I have datagridview populated from database and I want to make PDF print of...

hi, can someone explain the following problem : I have dll1 with class1. dll1 references dll2 with class2. class2 has a property "public bool IsFolder" class1 has a property "public List<class2> Items" In a form I reference dll1 and have an object "class1 obj" So now when I say "if...

Hello Everyone. This is my first post here. I'm having a very weird issue using Timers. My elapsed event isn't firing ; when it fires its completely random, not according to the interval i set. I already tried to drag the timer from the toolbox to the form, creating it manually on the STA...

Scenario_1. 1. The user. Presses the "Start" button; 2. The program. Creates an instance of the user element "ucBackgroundWorker" in "flowLayoutPanel1"; 3. The program. Creates a node in the "treeView1"; "Scenario_1" can be repeated an unlimited number of times. Scenario_2. There are: - Several...

There is - the main form is "Main.cs". - form with "progressBar" - "progressBar.cs" Scenario: User. The form is "Main.cs". Presses the "Start" button three times. Program. Opens three forms of "progressBar.cs" How to make the data from the progress percentage "progressBar" get in real...

Good Day, I Have A List<string> Saved In My App User Settings, this List is supposed to save the file paths of a openfiledialog to then deserialize it, but I already Called the method Save(); And even the method Upgrade(); After adding the strings to the list, but this strings, doesn´t save. Why?

One of those questions that are frequent, annual, and indecisive! When considering a new project in 2018 what platform are you choosing for Windows and why? WPF is the current and future platform, some say, yet Winforms continues to grow by 3rd party vendors (I use Developer Express) as if WPF...