control is a container control that is used to host a group of similar child
controls. One of the major uses I found for a Panel control when you have to
show and hide a group of controls. Instead of show and hide individual controls,
you can simply hide and show a single Panel and all child controls.
article, we will demonstrate how to create and use a Panel control in a Windows
Creating a Panel
We can create a Panel control using the Forms
designer at design-time or using the Panel class in code at run-time.
To create a Panel control at design-time, you
simply drag and drop a Panel control from Toolbox to a Form in Visual Studio.
After you drag and drop a Panel on a Form, the Panel looks like Figure 1. Once a
Panel is on the Form, you can move it around and resize it using mouse and set
its properties and events.
Creating a Panel control at run-time
is merely a work of creating an instance of Panel class, set its properties and
adds Panel class to the Form controls.
First step to create a dynamic Panel
is to create an instance of Panel class. The following code snippet creates a
Panel control object.
dynamicPanel As New
In the next step, you may set
properties of a Panel control. The following code snippet sets location, size
and Name properties of a Panel.
dynamicPanel.Name = "Panel1"
dynamicPanel.Size = New System.Drawing.Size(228,
dynamicPanel.BackColor = Color.LightBlue
Once the Panel control is ready with its properties, the
next step is to add the Panel to a Form. To do so, we use Form.Controls.Add
method that adds Panel control to the Form controls and displays on the Form
based on the location and size of the control. The following code snippet adds a
Panel control to the current Form.
Setting Panel Properties
place a Panel control on a Form, the next step is to set its properties.
way to set properties is from the Properties Window. You can open Properties
window by pressing F4 or right click on a control and select Properties menu
item. The Properties window looks like Figure 2.
most of the common control properties. Here I am going to discuss the main
purpose of a Panel.
Adding Controls to a Panel
You can add controls to a Panel by
dragging and dropping control to the Panel. We can add controls to a Panel at
run-time by using its Add method. The following code snippet creates a Panel,
creates a TextBox and a CheckBox and adds these two controls to a Panel.
sender As System.Object,
ByVal e As
Dim dynamicPanel As
dynamicPanel.Name = "Panel1"
dynamicPanel.Size = New
Dim textBox1 As
textBox1.Location = New
textBox1.Text = "I am a TextBox5"
textBox1.Size = New
Dim checkBox1 As
checkBox1.Location = New
checkBox1.Text = "Check Me"
checkBox1.Size = New
The output looks like Figure 3.
and Hide a Panel
I have seen in many applications when
you want to show and hide a group of controls on a Form based on some condition.
That is where a Panel is useful. Instead of show and hide individual controls,
we can group controls that we want to show and hide and place them on two
different Panels and show and hide the Panels. To show and hide a Panel, we use
article, we discussed discuss how to create a Panel control in Windows Forms at
design-time as well as run-time. After that, we saw how to use various
properties and methods.