we will build an outline line around the drawn lines so we would test the mouse click on this outline to know which line is selected. and we would in the coming update build a select function inside the move tool

[tut 7] Drag & Drop points in lines

by The Zakies

in this tut we will create a technique to enable the user to control points within a drawn line, by drawing circles around points of the line , when the user clicks a circle he would control the corresponding point.

[tut 8] Hand tool

by The Zakies

we would create Hand_tool to pan through the drawing form, and we would use a custom cursor of open and closed hands

[tut 9] hand tool (part 2) navigator panel

by The Zakies

we will continue the functionality of the hand tool with having a navigator panel which works as a map, we will also have a red rectangle which tells the user where he is actually viewing inside the whole form, also it can be moved to pan the form

[tut4] Draw Lines with Circle and Rectangle End

by The Zakies

[tut4] how to draw lines & to draw different types on end shapes like rectangle and circle using C#

[tut5] form communication,multi tab program, custom cursor for each tool

by The Zakies

Learn how to implement a tecnique of a parent form that createes and controls other forms , through the tecnique of using the tab control, also learn how to implement a menu for the tools, and how to add cutom cursor for each tool

A method to move rows within a DataTable

by agent154

A method to move rows within a DataTable

by johannesnestler

Nice solution agent154, I'd just suggest to implement it as extension methods for data row: (and I don't liked your "error reporting" with the '0' Value - because '0' could be a valid index). But I have to say, even if you don't have a database behind the datatable you can use sorting (LINQ,...

A Simple Number Entry Textbox

by bobishkindaguy

A simple entry box for various numbers, especially phone numbers.

A Very Simple C# Asynchronous Timed Message Box

by Tony Zackin

A very simple yet customizable pop-up message box which auto-closes after a specified number of milliseconds.

ActiveX in .NET Applications

by Vladyslav Chernysh

The goal of this tip is to share knowledge and experience on ActiveX usage in .NET applications (back-end & front-end).

Adding a File Open dialog to a PropertyGrid control

by OriginalGriff

The Visual Studio Property pane is a control, which can be used in WinForms like any other, and it provides a simple, easy to use property editor for your classes. However, it is not obvious how to get it to open a browse dialog for a file path property.

Adding Checkbox to a List View Column Header in C# WindowsForm Application

by Santosh Kokatnur

Adding Checkbox to a List View Column Header in C# WindowsForm application

Adding Functionality To .NET Controls

by PIEBALDconsult

This is an alternative for "Adding Functionality To .NET Controls"

Adding Images to a Winforms Project so They are Accessible as Resources

by OriginalGriff

How to add images to a Winforms Project so they are accessible as resources

An error log class to perform WinForms validations

by Armando de la Torre

Use an error log control to validate forms.

An Extensions Class for DataGridView

by Code Artist

DataGridViewEx is an extension class created to extend WinForms DataGridView control with advance editing features.

Apps Key in DevExpress GridControl

by Alexandros Pappas

Display of a context menu when pressing the Apps key in a DevExpress GridControl

AutoComplete ComboBox Control From Database

by alrosan

Automatically Display Menu on Hover

by #realJSOP

How to automatically display a Winforms menu when the mouse is hovered over an item

Avoiding InvokeRequired

by Igor Pashchuk, MBA

This is an alternative for "C# Pivot Table"

Backup All MySQL Databases in C# WinForm with 1 Click

by adriancs

A tool to backup & restore all MySQL databases in one click

Basic Base64 Encoded Image Viewer

by sreeyush sudhakaran

VB.NET code for Base64 Encoding and Decoding of Image files

Bind ComboBox and Other Controls to DataGridView using STT

by TarikHuber

Use STT (SQL Table Toolkit) to bind WinForm Controls to a DataGridview and to define ComboBox data sources

Binding Enum-Values to a ComboBox

by manchanx

Tidy, generic solution to bind Enums (with or without a DescriptionAttribute) to a ComboBox or other Controls

C# SmartBuilder- A Tool to auto generate Classes (Info,Controller, Provider)

by Ozesh Thapa

Choose your datasource and generate classes

C# Winform Gantt Chart

by pgmr_64804

C# Gantt Chart For Winforms

Centralise a Form on the Current Screen

by _Matt_Wilkinson_

How to centralise a Form when using multiple screens

Change individual DataGridView row colors based on column value

by Harvey Saayman

Below is an example of changing the individual row colors based on one of the DataGridView's columns.While this is not hard to do, the property isn't always where you think it should be, its hidden within the rows DefaultCellStyle property.Here's the example:foreach (DataGridViewRow...

Change individual DataGridView row colors based on column value

by dwilliss

Another way to do something like this is to handle the RowPrePaint event and change the background there. The advantage to doing it this way is that if you have thousands of rows, you don't have to set it for every row at the beginning, which could take a few seconds. This way only sets it for...

Change individual DataGridView row colors based on column value

by Lakhan Aanjana

If cell color is depend on criteriaif (ca.con.State == ConnectionState.Closed) { ca.con.Open(); } string qry = "select * From productmaster "; SqlDataAdapter da = new SqlDataAdapter(qry, ca.con); DataSet ds1 =...

Changing the line spacing in a RichTextBox control

by Manfred Rudolf Bihy

Using SendMessage and the PARAFORMAT structure, one can easily change the line spacing in a RichTextBox control

Checking the EU VAT Number with an German VAT for non German VAT

by TarikHuber

Easy library for checking VAT Numbers of European Companies. Only usable with an German VAT for non German VAT!!!

Collapsible ListView

by Tecfield

Collapsible ListView

ComboBox DataSource AddItem Extension

by B.O.B.

A simple extension to add an item that has a data source bound to combobox.items

ComboBox with Suggestions Based on Loose Character Search

by Serge Weinstock

A ComboBox whose suggestion list is based on loose character search

Connecting Windows Form Application With ADO.NET in C#

by Bikash Karmokar

Connecting Windows Form Application With ADO.NET in C#

Convert a Windows Form to PDF

by Frans Jan

This article shows how to save a Windows Form to a PDF file.

Convert XML File to Excel File

by Altaf Ansari

Converting XML Data into DataTable and Exporting DataTable into Excel File

Count Number of Unique Colors in an Image

by #realJSOP

Determine the number of unique colors in an image

Count Number of Unique Colors in an Image

by a_pess

I think we may check if the color is repeated or not, any how this another alternative but in VB.NetPublic Shared Function GetImageColorsCount(ByVal bitmap As Bitmap) As Integer Dim ColorList As New System.Collections.Generic.List(Of Integer) Dim clr As Integer For...

Count Number of Unique Colors in an Image

by Andrew Rissing

Just a few minor improvements to readability and such...The catch/throw isn't needed here, since you are just throwing it without doing anything in the catch block. A try/finally could have been used on its own.The try/finally isn't necessary because a using statement can achieve the same...

Counting Unique Products in a DataGridView and Displaying Column Sum

by Raje_

This is a simple demo of how to display the number of unique products from a DataGridView.

Custom Snipping Tool using C# WinForms

by Acharya Raja Sekhar

This tool helps a lot while capturing more number of snapshots. Example: Developers can use this tool to capture the UTR and save all snaps at the end to a Word document or save as individual images.

DataGridViewGrouper

by Robert.Verpalen

DataGridViewGrouper: add grouping functionality to the .NET DataGridView

Designing the Layout of Windows Forms using a TableLayoutPanel, with auto-expand panels

by Hassan Mokdad

This is a just a small tip to show a simple way of designing the user interface of Windows Forms for Desktops applications.

DesignTime adding of Controls to a UserForm on a WinForm

by BillWoodruff

An interesting change in behavior in VS 2010 Pro ?

Determining which TabPage was clicked

by PIEBALDconsult

A binary search technique to determine which TabPage of a TabControl was clicked

Determining which TabPage was clicked

by Lutosław

This method, although it doesn't use binary search, handles Multiline tab pages too.private static intGetTabIndexAt( System.Windows.Forms.TabControl tabControl, System.Drawing.Point point){ int result = -1; if (tabControl != null) { for (int i = 0;...

Disable 'click' sound when accesing WebBrower control

by Minh Danh Nguyen (ToughDev)

Depending on system preferences (in Control Panel/Sounds), the .NET WebBrowser control (just like Internet Explorer) may produce a click sound when changes are made programmatically to its DocumentText property, which is irritating to the user.There are two ways to avoid this:1. Use...

Disable 'click' sound when accesing WebBrower control

by emolina

Public Sub DisableSound() Dim keyValue As String keyValue = "%SystemRoot%\Media\" If Environment.OSVersion.Version.Major = 5 AndAlso Environment.OSVersion.Version.Minor > 0 Then keyValue += "Windows XP Start.wav" ElseIf Environment.OSVersion.Version.Major = 6 Then ...

Disable 'click' sound when accesing WebBrower control

by Member 8208766

To me the second method was problematic. After searching, I found an apparently equally good solution:webBrowser1.DocumentText = text;or in your case:webBrowser1.Document.Write("Hello, world!");from here:...

Disable 'click' sound when accesing WebBrower control

by pipiscrew

nah, try the light one ://at FormLOAD WB.Navigate("about:blank"); //at treeview event private void treeview_AfterSelect(object sender, TreeViewEventArgs e) { WB.Document.Body.InnerHtml = (dR["html"].ToString()); }

Does Your App Know Where it's Running

by #realJSOP

How to determine if your .Net app is running in the Visual Studio IDE

Does Your App Know Where it's Running

by Alan N

I use the following to insert pauses into console apps when they are vs hosted. In fact it's the final lines in my standard template for a console app to ensure that the console stays visible until I dismiss it.if (AppDomain.CurrentDomain.FriendlyName.EndsWith("vshost.exe",...

Draggable WinForms Controls

by intrueder

Extension method to make any WinForms control to be draggable at runtime

Dragging a Borderless Form

by Kristian Sixhøj

A code snippet which makes a borderless form draggable.

Dragging a Borderless Form

by Anshul R

The original snippet I made is in VB.NETProtected Overrides Sub WndProc(ByRef e As Message) MyBase.WndProc(e) If e.Msg = &H84 AndAlso e.Result = &H1 Then e.Result = &H2 End SubI used Reflector to translate it to C#protected override void WndProc(ref Message...

Dragging a Borderless Form

by Dima Popov

A slightly different solution.using System.Runtime.InteropServices;private const int WM_NCLBUTTONDOWN = 0xA1;private const int HTCAPTION = 0x2;[DllImport("User32.dll")]private static extern bool ReleaseCapture();[DllImport("User32.dll")]private static extern int...

Dynamically positioning a form/dialog, whilst also keeping it all on one monitor/screen

by CharlieFoolsTheComputer

Constraining a form/dialog to a single monitor

Enabling and Disabling TaskManager

by charles henington

Enabling and Disabling TaskManager

by George Swan

Couldn't the class RegEdit be replaced by one simple method?private void SetKey(bool enableTaskManager) { using ( var mKey = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System")) {...

Ensure visibility of your windows when switching computerscreens

by ola halvorsen

When going from a multimonitor environment to a single monitor, windows get stuck on the other screens

Ensure visibility of your windows when switching computerscreens

by Pat FitzHenry

If you have a window off-screen, type alt-space, and the letter m. Left click the mouse. Then continually press the left mouse key while scrolling the mouse around until the window comes into view. Click anywhere on screen off the window to drop the window. This should work for programs where...

Ensure visibility of your windows when switching computerscreens

by MartinW1307

I have for years used the follow to fetch a window to a visible screen.1. Right click the window on the taskbar and select 'Move' (or use the keystrokes Alt-Space, M)2. Move the mouse a bit3. Press "left arrow"4. Move the mouse around - you will see the window outline ;) 5. left click...

Ensure visibility of your windows when switching computerscreens

by Luc Schenkeveld

Alternate 3Right click on the taskbar and use "Show Windows Side by Side"

ExHtmlEditor - Express WYSIWYG HTML Visual Editor

by adriancs

A program/application for learning and writing HTML. Get instant visual effect side by side with your code as you type. Support HTML5, Javascript and CSS3 elements.

Extend RichTextBox for Easy Formatted Appending

by Yvan Rodrigues

A few lines of code to make using the Windows Forms RichTextBox easier to use as a logging window.

Extension method to update controls in a MultiThreaded WinForm application.

by RakeshMeena

This extension can be used to update controls in a thread safe manner. This method requires a MethodInvoker delegate as input parameter. It just checks whether the control is on a different thread than the caller.

Extension method to update controls in a MultiThreaded WinForm application.

by SergeyT2

You can use Action instead of MethodInvoker as well. And ".Invoke" at the method is unnesessary.public static void ThreadSafeCall(this Control control, Action method){ if (control.InvokeRequired) { control.Invoke(method); } else { method(); ...

Falling Blocks

by charles922

Another way to implement Falling Blocks Game

Filling PDF Form using iText PDF Library

by MayurDighe

This tip describes how to fill the PDF Form Template programmatically

Globalization in WPF

by Vipul Bhatnagar

Create a multilingual application WPF

GuidTextBox

by Midi_Mick

An edit control for the masked input of GUIDs

Hiding the form from alt-tab menu

by tumbledDown2earth

Hiding the form from alt-tab menu

by meaningoflights

Tried it in VB.NET Winforms app, but no luck. It's still shown in the alt-tab menu:Protected Overrides ReadOnly Property CreateParams As System.Windows.Forms.CreateParams Get Dim cp As CreateParams = MyBase.CreateParams cp.ExStyle = cp.ExStyle Or &H80 ...

Hooking Events to Private Members of User Controls

by Gordon Kushner

Say you need capture an event for a control in a User Control and you are not permitted to change the control itself.You can hook into control events, even for private controls with this code://In a Windows Form//Get the private control cboSomePrivateControl from the user control's...

Hosting an Excel Application in an MDI Form

by Your Display Name Here

How to use WebBrowser, a form, and an MDI parent to open Excel files

How Do I Capture the Enter Key in a Windows Forms Combobox

by Sergi Ortiz Gomez

Quick tip for capture ENTER key in a Windows Form combobox

How to apply many Tags for a Control using C#

by Shahin Khorshidnia

Tag is a useful property, but when you need more than a Tag, what will you plan for it?

How to Create a Dropdown Button Control

by youssef.obeid

This is to show you how to build a Dropdown button for Windows form

How To Create Rounded Edge Button (or rounded corner button) in Winforms

by basilke7007

How to create rounded edge button (rounded corner button) in Winforms

How to Embed Multiple Icons and Color/Animated Cursors in .NET Executable or DLL Library as Native Win32 Resources using VS2010

by CodeMajster

A detailed tutorial on how to embed multiple icons and color/animated cursors in VS2010 VB project assembly as native win32 resources.

How to handle and use event of simultaneously pressed two or more keys in C# - WASD keyboard game controls -

by Perić Željko

Example of handling multiple key press event

How To Hide Or Show .NET Tabs Programmatically

by KazMaxLtd

This article describes how to hide or show TabControl tabs at runtime

How To Hide Or Show .NET Tabs Programmatically

by Bernhard Hiller

That's far too obscure.All you need to do is store a reference to the TabPage instance which was removed from the TabPages collection of the TabControl. You may use the form where the TabControl is placed for that purpose.You could also create your own TabControl which has an extra property...

How to Share Data between Two or More Forms in Window Forms Application

by zheng shuo

This tip shows how to share data between two or more forms in a Winforms application.

Implementing Dynamic ToolTips: Preventing SetToolTip stack overflow

by Alan N

Handling the Popup event raised by the System.Windows.Forms.ToolTip component would seem offer an ideal opportunity to alter the tooltip text to reflect an underlying change. Unfortunately the stack overflow caused by calling ToolTip.SetToolTip will soon put a stop to the attempt.The test...

Implementing Dynamic ToolTips: Preventing SetToolTip stack overflow

by William Winner

First, why would you want to change the ToolTip text during the PopUp? Why not hook the MouseHover of the control that you want to change the ToolTip? Dynamically setting the ToolTip does not require hooking the PopUp event.How about: public partial class Form1 : Form { ...

Implementing shortcut keys for toolstrip

by Armando de la Torre

How to activate a toolstrip button via a shortcut key

Implementing shortcut keys for toolstrip

by KenBonny

This is nice for non standard buttons (like a CTRL + s), but OK and Cancel buttons have standard implementations in a Windows Form. Look for the properties AcceptButton and CancelButton of a Windows Form (not sure if this applies in ASP.NET or WPF, I need confirmation on that). There you can...

Interactively Add Multiple Shapes Using Linked Lists GDI+ SVG

by The Zakies

Tutorial 2 (how to interactively add multiple shapes GDI using linked lists)

Liquid Container Control

by Peer Adi

This is a liquid container control for displaying liquid level in container or tank.

Localized String in Form's resx with Designer Support

by coffee_machine

A component to add localized strings to a Form's res'x.

Make a control's text font bold at runtime in a windows application

by TheDotNetGeek

Code snippet to make a control's text font style to bold dynamically at runtime in a windows application

Make the programs work on a specific windows version

by alrosan

Managing Application Scoped Connection Strings

by Juan Davel

Managing Application Scoped Connection Strings

Manual Scroll Panel in a Panel or UserControl with AutoScroll=false

by harbor

Manual Scroll Panel in a Panel or UserControl with AutoScroll=false

Moveable non-standard shape form

by tumbledDown2earth

Trick for dragging the form while clicking on the client area

Multicast delegates in winform control update

by Nitin Singh India

People wonder how do delegates work and the threading issues associated with multicast ones.

Multiple Subsequent "Main" Forms in C# Apps

by #realJSOP

A useful technique that could be used for winform apps which require a login dialog

Multiple User-Selectable Main Forms

by #realJSOP

Allow any number of forms to be used as a main form with easy transitions between forms

Ownerdrawn ComboBox Example

by Johnny J.

A sample owner-drawn ComboBox

Passing Cookie Value from webbrowser Control to webclient in an Authenticated Environment

by selvaprakash.s

This tip will demonstrate how cookies are passed from one control to another control in C# .NET in authenticated webpage.

Plug-in Architecture To Work for Multiple Platforms/Techs

by Reader Man San

Plug-in Architecture To Work in WinForms MVC + WPF MVVM + ASP.NET MVC + Mobile (Xamarin MVC/PhoneGap MVC) + Win 10 Universal App MVC

Position a Windows Forms MessageBox in C#

by Thomas Daniels

A tip about how to set the position of a Windows Forms MessageBox in C#

Prevent code executing at Design Time in Visual Studio for Winforms Apps

by Keith Barrow

If you have a Winforms application that auto loads data, there is no doubt that you’ll have come across the problem of data loading at design time (i.e. when opening the code in the designer). At best, this slows the designer down, at worst it might crash VS and prevent the control from...

Prevent code executing at Design Time in Visual Studio for Winforms Apps

by Ron Beyer

If you are designing in a WinForms component, which is anything that derives from Control at some point (Forms, UserControls, panels, etc), then you can use the following code:if (this.Site.DesignMode) //Do stuff[edit]The above will throw an exception if Site is not set (in...

Prevent code executing at Design Time in Visual Studio for Winforms Apps

by tonyt

Either method is good for testing if you are in the designer, but another problem aside from preventing code execution, is preventing code from being jitted in the Designer. For example, you may reference assemblies or components that are dependent on native code, which cannot be loaded into any...

Product Key Dialog

by shelby67

Dialog for product key entry

Proper Resizing of SplitterContainer Controls at any DPI

by Graham Wilson

A method of ensuring that SplitterContainer controls with fixed panels are properly resized when AutoScaleMode is ScaleMode.DPI

Quick 'n' easy Colour Combo Box

by Simon Bridge

Full code listing for a very simple but effective Colour-Combo (Color for those in America)

Rendering Text with OpenType Fonts Using GDI

by wmjordan

Rendering text with OpenType fonts by P/Invoking GDI API in WinForm applications.

rePaint in OnPaint - How to Clear graphics which has been painted before ( to effect new changes)

by Sepehr Shojaee

clear graphis onpaint

Resolve DesignMode for a User Control

by Wendelius

The tip shows one way to resolve if a user control is in design mode.

Resolve DesignMode for a User Control

by Midi_Mick

This is an alternative for "Resolve DesignMode for a user control"

Retrieving TreeView nodes as IEnumerable

by intrueder

Extension method to make it easy to retrieve all nodes of a TreeView control.

Retrieving TreeView nodes as IEnumerable

by Richard Deeming

You can make this slightly more reusable by targeting the IEnumerable interface and providing a function to return the children of each item:public static class EnumerableExtensions{ private static IEnumerable DescendantsAndSelfIterator( IEnumerable source, ...

Retrieving TreeView nodes as IEnumerable

by leppie

Here is yet another alternative (originally from http://xacc.wordpress.com/2009/03/05/tree-traversal-extension-methods/[^]):public static class TreeExtensions{ public static IEnumerable TraverseDepthFirst( this T t, Func valueselect, Func<T,...

Retrieving TreeView nodes as IEnumerable

by springy76

By using a LinkedList, you can even mimic true recursive behavior without using recursive calls; the order will be "0,3,9,10,4,1,5,11,12,2,6,7,8", then:public static IEnumerable GetRecursive(this IEnumerable source, Func> subSelector){ var...

Run Only One Copy Of Application

by charles henington

Run Only One Copy Of Application

by RaviRanjanKr

Yet another way to this is as follows: using System;using System.Collections.Generic;using System.Windows.Forms;using System.Threading;namespace OnlyOneInstance{ static class Program { [STAThread] static void Main() { bool...

Run Only One Copy Of Application

by Neil A. Harding

I actually use code like this, which allows me to detect a existing instance and to call the original instance with the command line (I expand any filenames present so that it can access the filenames even if the original path is different).string processName =...

Run Only One Copy Of Application

by FDW

Maybe this is helpful, it tries to switch to the first running instance:namespace UltraSimple.Win{ static class Program { [System.Runtime.InteropServices.DllImport("user32.dll")] public static extern bool SetForegroundWindow(IntPtr hWnd); [STAThread] ...

Run Only One Copy Of Application

by tlhIn`toq

Just because we like C# doesn't mean we can't borrow from other .NET languages. I've always had good luck and less complication using VB's single instance methodology in my C# applications. This code would go in your program.cs file:/// /// We inherit from...

Run Only One Copy Of Application

by KevinPorter

How about using a Mutex? This should also work for Terminal Services sessions. Use in Program.csstatic Mutex mut;try{ bool isOwned = false; mut = new Mutex(true, Application.ProductName + " MUTEX: {53A4988C-F91F-4054-9076-220AC5EC03F3}", out isOwned); if (!isOwned)...

Safe Coding

by Henry Minute

Never code whilst holding scissors. That is not what is meantby the 'cut' in cut and paste.

Save WinForm Snapshot Images

by asiwel

Simple C# methods for saving snapshot images of a WinForm to the desktop

Select only one node in Treeview

by Vano Maisuradze

Select only one node in Treeview

by Sagotharan Jagadeeswaran

Thanks, I am just changing False to True, And I got Automatically Check TreeView Child Nodes When Parent Is Checked.private void treeView1_AfterCheck(object sender, TreeViewEventArgs e) { if (e.Node.Checked) { ...

SendMessage and PostMessage?

by zidane168

This topic focuses on what is the difference between SendMessage and PostMessage and how to use them?

Serial Port Communication

by Sreedeep.S

Serial Communication with the .NET Framework in Winforms

Set ComboBox/DateTimePicker/CheckedListBox Read-only

by cwfong

Make these controls read-only on WinForm

Set Error-Control Focus as per TabIndex

by avigodse

This article is created for setting the tab focus on the controls, where the error-provider has error text.

Set Owner of a WPF Window to a Form

by Akos Orban

Set Owner of a WPF Window to a Form

Silent Print Using C#

by R.Tarik

Print you PDF silently using C#

Simple Custom Collection Designer Support

by Midi_Mick

The simplest solution for adding a custom collection of custom objects to the designer

Simplest way to implement irregular forms in .NET

by Nejimon CR

Make irregular splash screens without writing a single line of code!

Single Instance Form in a MDI application

by Manish K. Agarwal

Single Instance Form in a MDI application

by Ctznkane

Assuming you only want a single instance of a form type, I'd suggest you add a Dictionary(Of Type, Form). ShowOrActiveForm would have a single parameter of Type and would be a subroutine.The Form object could be found based on a ContainsKey. The rest of the ShowOrActiveForm function would be...

Single Instance Form in a MDI application

by Vladimir Vorobiev

This example contains the code to manage the menu of open forms (standard Windows menu). When created, each mdi-child gets a menu item and event handler through which this element is removed from the menu when the corresponding form is closed.private void ShowOrCreateMdiChild(Type formType)...

Single Instance Form in a MDI application

by Rafał Klepacz

private void OpenForm() where T : Form, new(){ T frm = (T)new List(this.MdiChildren).Find(f => f is T) ?? new T() { MdiParent = this }; frm.Show(); frm.Focus();}and usageOpenForm();

TextBox cursor position

by PIEBALDconsult

Getting the line and position of the cursor in a TextBox

TextBox cursor position

by PIEBALDconsult

OK, here's another way (I found this at http://dotnet.mvps.org/dotnet/faqs/?id=textboxcaretpos&lang=en[^]). [System.Runtime.InteropServices.StructLayoutAttribute (System.Runtime.InteropServices.LayoutKind.Sequential)]private struct ApiXY{ public int X ; public int Y ;}[ ...

Tip: Minor Improvements on the DockPanel Suite, Part 1

by Brian C Hart

This tip shows how to add support for New Horizontal Tab Group and New Vertical Tab Group commands to the Window menu of an application using the DockPanel Suite by Weifen Luo, and some other minor improvements to help decided if at least one of your windows is docked to the side of the main form an

Unfocusable, borderless form, perfect for floating controls!

by Vercas

Unfocusable, borderless form, perfect for floating controls!

Unicode to Krutidev, Krutidev to Unicode Convertor in C#

by AnuragTripathi

Convertor for Unicode to Krutidev and vice-versa.

Updating Database from DataGridView Using a Class Two-Tier Architecture

by Awesh Vishwakarma

By reading this trick, you will be able to update your database from DataGridView through external class instead of writing code on each page.

Use Custom Events from your WCF ServiceHost

by #realJSOP

When you need to communicate with the app that contains your ServiceHost object, use custom events

UserControls as SDI Windows

by Yvan Rodrigues

Using ISynchronizeInvoke to Painlessly Create Thread Safe User Interfaces

by honey the codewitch

This tip shows you how to do UI updates without having to worry about locking.

Visual Image Cryptography Generator

by Jacky Yiu

Visual cryptography is a cryptographic technique which allows visual information (pictures, text, etc.) to be encrypted in such a way that the decryption can be performed by the human visual system, without the aid of computers.

Wait progress bar for long running UI operations

by kris444

Showing progress bar while performing time consume processes.

Wait progress bar for long running UI operations

by Anshul R

You can use BackgroundWorker to do the work and report the progress using:private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e){ this.progressBar1.Value = e.ProgressPercentage;}

Wait progress bar for long running UI operations

by Bruce Lee Harrison

The background method is probably the most preferred method, but I've found this one is very easy to implement, and it's just one short line:BeginInvoke(new Action(() => progressBar1.Increment(1)));Place this in your worker thread to report to the UI. Not sure how "good" this is, but it...

Wait progress bar for long running UI operations

by Member 147785

Hello!Here is a small article - Show progress on long-running operations, which describes approach to keep the UI responsive, starting long-running operations in separate thread. This approach is native and without any 3d-party libraries and even without BackgroundWorker.For example, the...

WebCam Application with Scheduling

by Ron Levy

WebCam Application with Scheduling

WIA Scanner in C# Windows Forms

by Chakravarthi Elchuri

How to use WIA supported scanner using C#

Windows Forms ToggleButton

by IKalai

A Windows Forms toggle button with Android, Windows and iOS like styles.

WinForm Application: Confine the textbox Only to Take Numeric Inputs

by Clivic TR

This are a practical ways to confine inputs into a specific range. The natural thinking is to track them and change. That derives two ways below.

WinForm DataGridView Loading from objectcollection

by mohanaitec

WinForm DataGridView loading from ObjectCollection.

WinForm VB.NET Hosting WPF Ribbon - Part 2 - Using ICommand with MVVM Pattern

by Jo_vb.net

My idea was to host a WPF user control with Ribbon within a WinForm VB.NET project and try to use MVVM pattern.

WinForms .NET Time Chooser Control

by Jamie Highfield

WinForms .NET Time Chooser grid control.

WinForms TextBox to accept numbers in a range

by Manish K. Agarwal

Simple Numeric TextBox to accept digits for a given minimum maximum range

WinForms TextBox to accept numbers in a range

by Tom Clement

A few notes on this code: Wouldn't you get an exception if the user happens to put in a number bigger than can be stored in an int32? Wouldn't int32.TryParse be better because of this?The control can be initialized with a negative number as a constraint, but it doesn't permit the '-'...

WinForms TextBox to accept numbers in a range

by Grasshopper.iics

I will use a label with font color red just below the text box and will adopt the following code private void textBox1_TextChanged(object sender, EventArgs e) { int min=0,max=256; try { label1.Visible = false; ...

Working with Excel Using C#

by Nanda Kumar Chintam

Demonstration of Excel manipulations using C#

Yet Another Color Picker for C#, VB.NET WinForm

by adriancs

An Office 2010 Style Color Picker for .NET WinForm.