Category "winforms"

Hovering over a DataGridViewComboBoxColumn in a WinForms app in Windows 11 turns cell black (OK in Windows 10)

When we run our application on Windows 11 the DataGridView control seems to act differently. Hovering over a cell in a DataGridViewComboBoxColumn turns the cell

How to solve the infinite loop in reportviewer? winforms

I am working with reportviewer in visual studio 2010, but when I open the report for the first time the data loads correctly, but when I change to another repor

UI thread slow to respond to Progress updaters on async Task method using VS2022 & Net6.0

I’ve run into a performance obstacle and I’m uncertain of the cause, all of this is running under VS2022 & Net6.0. As this is my 1st time using

Using c# winform Live-Charts, how to make real time plot with changing data?

My data is coming from a real time source that provides a number of milliseconds from start and the value. I want a real time plot, i.e. the old values fall of

Fill the DataSource of a DataGridView with existing Columns

Is there a way to fill the DataSource of a DataGridView using the existing Columns? I'm trying to set a DataSource to my DataGridView; every time I set my DataS

Need help deleting rows/lines in richtextbox c# win forms

So essentially, I have a button, when I press the button, the button should delete the most recent row of text embedded into the rich text box. Press it again,

How can I embed a variable on build from a text file I read?

I am working on C# winform application and I had setup .env files with this package https://github.com/tonerdo/dotnet-env, the problem is I can't access my data

What is preventing Combobox SelectedValue from setting?

I have several comboboxes, all similar code and only one, CustomerSelector.SelectedValue, is not working. I have even tried setting the value like this: Custom

c# How to get the most repeated pixel values from an image

Bitmap image; private void button4_Click(object sender, EventArgs e) { pictureBox1.Image = image; Color co; for

How to set color for checkbox present in datagridview?

I have a datagridview in windows form. It looks like this. In this, have one Checkbox column, two textbox column. My requirement is need to set readonly true a

How to support snap layout in WinForms in C# for windows 11

How to support snap layout in WinForms for windows 11. I'm using c# 10. My application's custom maximize button shows only tooltip. MainForm's WndProc code: pr

Databind Object to Winforms DatagridView with ComboBox

Currently I'm trying to databind object properties to a datagridview. The thing is that the datagridview should have a combobox column, where the user has to ch

How to exclusively set the value of a DataGridViewCheckBoxCell?

I have a List<Car> objects that have a bool property named Marked. I want to check / uncheck the Cell corresponding to this property, in a way that only o

Copy selected text of a RichTextBox to the Clipboard with a Mouse Click

I have a RichTextBox(RTB) that obtains text from two sources a txt file and data from a SQLite DB. The RTB has ReadOnly property set to False. I am trying to NO

Is there a way to exclude document files from the installation folder for vb.net project?

I have created a windows form application using vb.net 2019, and everything seems fine until I found out that an .xml document which contains confidential files

How make pages in Winforms?

I would like to make pages for UserControl but I don't know how I can do this. How can I implement this as in the picture in WinForms? I would like to display a

Handle MouseMove, MouseDown, MouseUp Events in a ListView to drag a borderless Form

I'm using MouseMove, MouseUp, MouseDown events to move a borderless form (as found here as an example). It works great, but for a ListView, it only works if I c

how can i use a function from MyForm1.h in MyForm.h

i have a funcion 'button1_click' in the header 'MyForm1.h'. I want to use this function in another header 'MyForm.h'. How can i do this? i already included 'MyF

How to prevent a popup Form from exceeding screen area?

I am building a two column custom context menu layout using Forms. I named the class of the form of the custom context menu as ContextMenu. I created a flag fun

How do I restore focus to previously focused control of the TabPage when switching between tabs

I have a TabControl and I'm adding Tabpages to it programmatically. Each TabPage loads a UserControl in it, and each user control contains a few controls. For e