winforms

I am using Northwind database in Sql Server. I am using Stored Procedure to connect Visual Studio with Sql Server and draw data from database. In CRUD operations, I am tring to write a SEARCH button that is using Stored Procedure. Other CRUD buttons are working okay. Search button is not...

I have a form application that when clicking a menustrip button, it opens an instance of a form. I made this newly opened form a child of other form to make the newly opened form(child) to stay in the borders of this(parent) form. I used form.MdiParent so newly opened form has a parent. If I...

Here are the code snippeds, form1.cs: And, here is the Designer ERROR : If I pass a form object as an parameter into a normal method argument, it works fine this way, no designer & eventhandler error occurs. However if I use events like RadioButton Checked Changed, then I get this EVENT...

Hello!!! :) I am trying to make a custom UITypeEditor with a dialog box which will import .svg files into a project or will select one from those already imported, like the Select Resource Dialog Box does with other files. I have managed to make it get the .svg file from a file and then place...

Although both of the listBoxes **AllowDrop=true** listBox2 does not allow me to drop an item from listbox1 into listBox2. VS 2022 does not give any error, warning or exception handling problem. The problem is that this code does not do what it supposed to do. It does not let me carry 1 item...

This simple code gives Exception Handling Error: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace...

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...