The document outlines controls used in a user interface, such as TabControl, Checkbox, and RadioButton, providing interaction examples through code snippets. It explains how to manage the state of a Checkbox and the selection of RadioButtons, as well as how to create and utilize a NotifyIcon for user notifications. The instructions also include details on handling events like balloon tip clicks and configuring form load events in a project.

3. TabControl Control
The TabControl manages tab pages where each page may host different child controls.

4. • CheckBox has two or three states. This control
provides a way for an option to be selected and
deselected independently of other options.

5. In this project
• Drag down a Label
• Drag down a checkbox (if the checkbox is checked the text of label
will be true, other wise it will be false.
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
if (checkBox1.Checked == true)
{
label1.Text = "true";
}
else
{
label1.Text = "false";
}
}

7. Coding
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
if (radioButton1.Checked == true)
label1.Text = "You select radioButton11";
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
if (radioButton2.Checked == true)
label1.Text = "You select radioButton22";
}

8. Run

9. • A notification icon notifies the user. In Windows there
is a Notification Icons section typically in the bottom
right corner.

10. example 1. Open new project.
2. Add NotifyIcon
control to your
project.
Note:- if you don’t put
an icon the
notification balloon
will not appear

11. Coding
• Double click on form1 and write underline code.
private void Form1_Load(object sender, EventArgs e)
{
notifyIcon1.ShowBalloonTip(1000);
}

12. 1- Add balloonTipClicked event
2- Add underline code
private void notifyIcon1_BalloonTipClicked(object sender, EventArgs e)
{
MessageBox.Show("Hello!!!");
}

13. Execution