Windows form application c# example

Please rate your experience Yes No. Any additional feedback? Namespace: System. Forms Assembly: System. Note The call to Exit will fail in partial trust. In this article. Gets a value indicating whether the caller can quit this application.

Gets the path for the application data that is shared among all users. Gets the registry key for the application data that is shared among all users. Gets a value indicating whether a message loop exists on this thread. Gets a value specifying whether the current application is drawing controls with visual styles.

Gets a value that indicates whether visual styles are enabled for the application. Gets or sets whether the wait cursor is used for all open forms of the application.

Gets a value that specifies how visual styles are applied to application windows. Adds a message filter to monitor Windows messages as they are routed to their destinations. Equals Object. Determines whether the specified object is equal to the current object.

Inherited from Object. Exit CancelEventArgs. Exits the message loop on the current thread and closes all windows on the thread. FilterMessage Message. Runs any filters against a window message, and returns a copy of the modified message. Serves as the default hash function. OnThreadException Exception. The EnableVisualStyles method enables visual styles. The application will use the built-in Windows theming to style controls instead of the classic Windows look and feel.

The Run method starts the application. It begins running a standard application message loop on the current thread, and makes the specified form visible. A tooltip is a small rectangular pop-up window that displays a brief description of a control's purpose when the user rests the pointer on the control.

The code example creates a tooltip for two controls: one Button control and the Form control. We place two buttons on the FlowLayoutPanel. It dynamically lays out its contents horizontally or vertically. The default dimension is vertical. We create a new tooltip. A new Button control is created.

We set its text with the Text property and size it automatically to fit the text size. Button control represents a Windows button control. It can be clicked by using the mouse, Enter key, or Spacebar if the button has focus. The example creates a Quit button control; the application terminates when we click on the button. The button has some margin around its borders. We add some space to the left and above the button control. We plug an event handler to the Click event.

When we click on the button, the application is closed with the Close method. Since we do not work with the sender object and event arguments, we use discards. Label is a simple control for displaying text or images. It does not receive focus. CheckBox is a control that has two states: on and off. For example, name the textbox for the user as txtName and that for the address as txtAddress.

A naming convention and standard should be made for controls because it becomes easier to add extra functionality to these controls, which we will see later on. A Listbox is used to showcase a list of items on the Windows form. We will add a list box to the form to store some city locations. Step 1 The first step is to drag the list box control onto the Windows Form from the toolbox as shown below. Step 2 Once the list box has been added, go to the properties window by clicking on the list box control.

In the output, you can see that the Listbox was added to the form. You can also see that the list box has been populated with the city values. A Radiobutton is used to showcase a list of items out of which the user can choose one. Step 2 Once the Radiobutton has been added, go to the properties window by clicking on the Radiobutton control. A checkbox is used to provide a list of options in which the user can choose multiple choices.

We will add 2 checkboxes to our Windows forms. These checkboxes will provide an option to the user on whether they want to learn C or ASP.

Step 1 The first step is to drag the checkbox control onto the Windows Form from the toolbox as shown below. Step 2 Once the checkbox has been added, go to the properties window by clicking on the Checkbox control. A button is used to allow the user to click on a button which would then start the processing of the form. Step 1 The first step is to drag the button control onto the Windows Form from the toolbox as shown below. Step 2 Once the Button has been added, go to the properties window by clicking on the Button control.

Congrats, you now have your first basic Windows Form in place. When working with windows form, you can add events to controls. An event is something that happens when an action is performed. Probably the most common action is the clicking of a button on a form. In C Windows Forms, you can add code which can be used to perform certain actions when a button is pressed on the form. The below example will showcase an event for the Listbox control. So whenever an item is selected in the listbox control, a message box should pop up which shows the item selected.

Step 1 Double click on the Listbox in the form designer. By doing this, Visual Studio will automatically open up the code file for the form. And it will automatically add an event method to the code. This event method will be triggered, whenever any item in the listbox is selected.

Above is the snippet of code which is automatically added by Visual Studio, when you double-click the List box control on the form. One you make the above changes, and run the program in Visual Studio you will see the following output. From the output, you can see that when any item from the list box is selected, a message box will pops up. This will show the selected item from the listbox. Again this follows the same philosophy. Just double click the button in the Forms Designer and it will automatically add the method for the button event handler.